II 2GD T5
CE
SERVICE AND OPERATING MANUAL
Model ST1-A
Model ST25A
Type 4
PRINCIPLE OF OPERATION
This ball check valve pump is powered by compressed air and is a 1:1 pressure
ratio design. It alternately pressurizes the inner side of one diaphragm chamber, while
simultaneously exhausting the other inner chamber. This causes the diaphragms, which
are connected by a common rod, to move endwise. Air pressure is applied over the entire
surface of the diaphragm, while liquid is discharged from the opposite side. The diaphragm
operates under a balanced condition during the discharge stroke, which allows the unit
to be operated at discharge heads over 200 feet (61 meters) of water head.
Since the diaphragms are connected by a common rod, secured by plates to the
center of the diaphragms, one diaphragm performs the discharge stroke, while the other
before installation and start-up of the pump.
It is the responsibility of the purchaser to
retain this manual for reference. Failure to
comply with the recommendations stated
in this manual will damage the pump, and
void factory warranty.
IMPORTANT
Rea d th ese saf ety
w a r n i n g s a n d
in struc ti ons in th is
manual completely,
is pulled to perform the suction stroke in the opposite chamber.
For maximum diaphragm life, keep the pump as close to the liquid being pumped as
possible. Positive suction head in excess of 10 feet of liquid (3.048 meters) may require
a back pressure regulating device. This will maximize diaphragm life.
Alternate pressuring and exhausting of the diaphragm chamber is performed by
means of an externally mounted, pilot operated, four-way spool type air distribution
valve. When the spool shifts to one end of the valve body, inlet air pressure is applied to
one diaphragm chamber and the other diaphragm chamber exhausts. When the spool
shifts to the opposite end of the valve body, the porting of chambers is reversed. The air
distribution valve spool is moved by an internal pilot valve which alternately pressurizes
Re-torque loose fasten ers to prevent
leakage. Follow recommended torques
stated in this manual.
CAUTION
B e f o r e p u m p
operation, inspect all
gasketed fastene rs
for looseness caused
by gasket creep.
one side of the air distribution valve spool, while exhausting the other side. The pilot
valve is shifted at each end of the diaphragm stroke by the diaphragm plate coming in
contact with the end of the pilot valve spool. This pushes it into position for shifting of
the air distribution valve.
The chambers are manifolded together with a suction and discharge check valve for
each chamber, maintaining ow in one direction through the pump.
This specially-tted SandPIPER pump differs from standard units in that it utilizes
four diaphragms instead of two. The two rod-connected diaphragms being the driver
diaphragms, and the other two (outermost) diaphragms being the actual
pumping diaphragms. Each driver diaphragm (of Neoprene or other elastomer), and the
The discharge line may be pressurized
and must be bled of its pressure.
WARNING
Before maintenance
or repair, shut off the
com-pressed air line,
bleed the pressure,
and disconnect the
air line from the pump.
pumping diaphragm (of TFE), are separated by a chamber lled with liquid. This
transmits the reciprocating motion of the driver diaphragm to the pumping diaphragm.
The TFE pumping diaphragms create alternating suction and discharge action to each
outer diaphragm chamber. The pumping diaphragms are the only ones in contact with
the liquid being pumped.
INSTALLATION & START-UP
Locate the pump as close to the product being pumped as possible, keeping suction
line length and number of ttings to a minimum. Do not reduce line size.
For installations of rigid piping, short exible sections of hose should be installed
discharged into the atmosphere. The air
exhaust must be piped to an appropriate
area for safe disposition.
WARNING
I n t h e e v e nt o f
diaphragm rupture,
pumped material may
enter the air end of
th e pump , and be
between pump and piping. This reduces vibration and strain to the piping system.
A Warren Rupp Tranquilizer
pulsation in ow.
This pump was tested at the factory prior to shipment and is ready for operation. It
is completely self-priming from a dry start for suction lifts of 10-15 feet (35 meters) or
less. For suction lifts exceeding 15 feet of liquid, ll the chambers with liquid prior to
priming.
AIR SUPPLY
Air supply pressures cannot exceed 125 psi (8.61 bar). Connect the pump air inlet
®
surge suppressor is recommended to further reduce
WARNING
Take action to prevent
stati c sparking. Fire
or e xpl os ion can
res ul t, es pe cia l ly
w h e n h a n d l i n g
flammable liquids.
The pump, piping, valves,
co nta in er s or othe r m is ce lla ne ous
equipment must be grounded.
to an air supply of sufcient capacity and pressure required for desired performance.
When the air line is solid piping, use a short length of exible hose (not less than 3/4"
[19mm] in diameter) between pump and piping to eliminate strain to pipes. Use of a
Warren Rupp Filter/Regulator in the air line is recommended.
WARREN RUPP, INC. A Unit of IDEX Corporation • P.O. Box 1568 • Manseld, Ohio 44901-1568 USA • (419) 524-8388 Fax (419) 522-7867
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 1
AIR INLET & PRIMING
For start-up, open an air valve approximately 1/2" to 3/4" turn. After the unit primes,
an air valve can be opened to increase ow as desired. If opening the valve increases
cycling rate, but does not increase ow rate, cavitation has occurred, and the valve
should be closed slightly.
For the most efcient use of compressed air and the longest diaphragm life, throttle
the air inlet to the lowest cycling rate that does not reduce ow.
WARNING
Do not sm oke near
t he p ump o r u s e
th e pu mp ne a r a n
ope n flam e. Fire or
explosion could result.
AIR EXHAUST
If a diaphragm fails, the pumped liquid or fumes can enter the air end of the pump,
and be exhausted into the atmosphere. When pumping hazardous or toxic materials,
pipe the exhaust to an appropriate area for safe disposition.
This pump can be submerged if materials of construction are compatible with the
liquid. The air exhaust must be piped above the liquid level. Piping used for the air
exhaust must not be smaller than 1" (2.54 cm). Reducing the pipe size will restrict air
ow and reduce pump performance. When the product source is at a higher level than
the pump (ooded suction), pipe the exhaust higher than the product source to prevent
siphoning spills.
Freezing or icing of the air exhaust can occur under certain temperature and humidity
conditions. Use of an air dryer should eliminate most icing problems.
BETWEEN USES
When used for materials that tend to settle out or transform to solid form, the pump
should be completely ushed after each use, to prevent damage. Product remaining
in the pump between uses could dry out or settle out. This could cause problems with
valves and diaphragms at re-start. In freezing temperatures, the pump must be drained
between uses in all cases.
CHECK VALVE SERVICING
Need for inspection or service is usually indicated by poor priming, unstable cycling,
reduced performance or the pump’s cycling but not pumping. (See Fig. 3)
Inspect the surfaces of both check valve and seat for wear or damage that could
prevent proper sealing. If pump is to prime properly, valves must seat air tight.
DIAPHRAGM SERVICING
Driver Diaphragms:
Drain the intermediate diaphragm housing (Item 36) by removing the pipe plug
directly beneath and behind the mounting ange. This port is also used for the optional
Electronic Leak Detector (Warren Rupp p/n 032-017-000 115 volt or p/n 032-018-000
220 volt). Remove four bolts securing the manifold ange to the chamber. Remove eight
nuts (Item 42) securing the inner diaphragm chamber (Item 22) and remove the outer
driver diaphragm assembly by pulling it axially off the studs. This permits inspection of
the Virgin PTFE diaphragm and the driver diaphragm. Pumping diaphragm chambers
need not be separated for access to the driver diaphragm. Loosen the plate which
secures the diaphragm and plate to the rod by keeping the diaphragm engaged with
the inner diaphragm chamber (Item 22) by inserting two or three capscrews through the
bolt holes so that the diaphragm cannot rotate when loosening. The diaphragm plates,
diaphragm and bumper will now come off the assembly. Repeat all actions if the other
diaphragm needs to be inspected or replaced.
NOTE: See “Filling of Driver Chamber with Liquid” for the correct procedure to
recharge the pump for operation.
Reassembly is the reverse of the tear down. During reassembly, be sure that the
rubber bumper is on the rod on each side (see Figure 5). Install the diaphragm with the
natural bulge to the outside as marked on the diaphragm. Install the heavier plate on the
outer side of the diaphragm. Be sure that the large radius side of each plate is toward the
diaphragm. Place the sealing washer between the inner diaphragm plate and the end
of the rod. Tighten the plate to approximately 25 ft. lbs. (33.89 Newton meters). Torque
while allowing the diaphragm to turn freely with the plate. Hold the opposite side with a
wrench on the plate to prevent rotation of the rod. If the opposite chamber is assembled,
this will not be necessary.
When reassembling the outer chambers and the manifold, the bolts securing the
manifold ange to the chamber should be snugged prior to tightening the manifold ange.
Finish tightening the manifold ange bolts after the chamber bolting is secured.
WARNING
This pump must not be
used for fluid transfer
into aircraft.
WARNING
This pump is
pressurized internally
wit h a ir pre s sur e
during operation.
Always make certain
that all bolting is in good condition and
that all of the correct bolting is reinstalled
during assembly.
WARNING
When used for toxic or
aggressive fluids, the
pump should always
be flushed clean prior
to disassembly.
WARNING
Bef ore d o ing a ny
main-tenance on the
pump, be certain all
pressure is completely
v e n t e d f ro m t he
pump, suct ion, discharge, pipin g, and
all other openings and connections. Be
certain the air supply is locked out or
made non-operational, so that it cannot
be started while work is being done on
the pump. Be certain that approved eye
protection and protective clothing are
worn all times in the vicinity of the pump.
Failure to follow these recommendations
may result in serious injury or death.
WARNING
Airborne particles and
loud noise hazards.
Wear ear and eye
protection.
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 2
Pumping Diaphragms:
It is recommended that the above procedure be followed to the point of removing
the pumping diaphragm assembly from the pumping unit. Remove eight hex nuts which
allow the outer diaphragm chamber to be lifted from the assembly exposing the PTFE
diaphragm. The PTFE diaphragm can now be lifted from the bolts. The black gasket
(Item 37) is designed to prevent movement and supplement the sealing of the PTFE
diaphragm to retain the driver liquid, and to seal the wetted chamber.
The reassembly should be in reverse as follows.
Install the rubber diaphragm gasket inside the hex head capsrews protruding through
inner chamber. Install PTFE diaphragm in place.
Snug down the outer diaphragm housing (Item 39) evenly torqued on all eight bolts,
alternating from one side to the other in the process. After this subassembly is completed
and reinstalled on the pump as it was removed, the pump should be tested prior to the
reinstallation on the job to make sure the capscrews and nuts are torqued down properly
to prevent leakage around the PTFE diaphragm surfaces. Do not overtighten these bolts.
PTFE has a tendency to cold ow. Torque at 200 inch/pounds (22.59 Newton meters).
A NOTE ABOUT AIR VALVE LUBRICATION
The SandPIPER pump’s pilot valve and main air valve assemblies are designed
to operate WITHOUT lubrication. This is the preferred mode of operation. There may
be instances of personal preference, or poor quality air supplies when lubrication of
the compressed air supply is required. The pump air system will operate with properly
lubricated compressed air supplies. Proper lubrication of the compressed air supply would
entail the use of an air line lubricator (available from Warren Rupp) set to deliver one drop
of 10 wt., non-detergent oil for every 20 SCFM of air the pump consumed at its point of
operation. Consult the pump’s published Performance Curve to determine this.
It is important to remember to inspect the sleeve and spool set routinely. It should
move back and forth freely. This is most important when the air supply is lubricated. If a
lubricator is used, oil accumulation will, over time, collect any debris from the compressed
air. This can prevent the pump from operating properly.
Water in the compressed air supply can create problems such as icing or freezing
of the exhaust air causing the pump to cycle erratically, or stop operating. This can be
addressed by using a point of use air dryer to supplement a plant’s air drying equipment.
This device will remove excess water from the compressed air supply and alleviate the
icing or freezing problem.
ESADS: EXTERNALLY SERVICEABLE AIR
DISTRIBUTION SYSTEM
Please refer to the exploded view drawing and parts list in the Service Manual
supplied with your pump. If you need replacement or additional copies, contact your
local Warren Rupp Distributor, or the Warren Rupp factory Literature Department at the
number shown below. To receive the correct manual, you must specify the MODEL and
TYPE in formation found on the name plate of the pump.
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 3
MODELS WITH 1" SUCTION/DISCHARGE OR LARGER, AND
METAL CENTER SECTIONS
The main air valve sleeve and spool set is located in the valve body mounted on the
pump with four hex head capscrews. The valve body assembly is removed from the
pump by removing these four hex head capscrews.
With the valve body assembly off the pump, access to the sleeve and spool set is
made by removing four hex head capscrews (each end) on the end caps of the valve
body assembly. With the end caps removed, slide the spool back and forth in the sleeve.
The spool is closely sized to the sleeve and must move freely to allow for proper pump
operation. An accumulation of oil, dirt or other contaminants from the pump’s air supply,
or from a failed diaphragm, may prevent the spool from moving freely. This can cause
the spool to stick in a position that prevents the pump from operating. If this is the case,
the sleeve and spool set should be removed from the valve body for cleaning and further
inspection.
Remove the spool from the sleeve. Using an arbor press or bench vise (with an
improvised mandrel), press the sleeve from the valve body. Take care not to damage the
sleeve. At this point, inspect the o-rings on the sleeve for nicks, tears or abrasions. Damage of this sort could happen during assembly or servicing. A sheared or cut o-ring can
allow the pump’s compressed air supply to leak or bypass within the air valve assembly,
causing the pump to leak compressed air from the pump air exhaust or not cycle properly. This is most noticeable at pump dead head or high discharge pressure conditions.
Replace any of these o-rings as required or set up a routine, preventive maintenance
schedule to do so on a regular basis. This practice should include cleaning the spool
and sleeve components with a safety solvent or equivalent, inspecting for signs of wear
or damage, and replacing worn components.
To re-install the sleeve and spool set, lightly lubricate the o-rings on the sleeve with
an o-ring assembly lubricant or lightweight oil (such as 10 wt. air line lubricant). Press
the set into the valve body easily, without shearing the o-rings. Re-install one end cap,
gasket and bumper on the valve body. Using the arbor press or bench vise that was used
in disassembly, press the sleeve back into the valve body. You may have to clean the
surfaces of the valve body where the end caps mount. Material may remain from the old
gasket. Old material not cleaned from this area may cause air leakage after reassembly.
Take care that the bumper stays in place allowing the sleeve to press in all the way.
Re-install the spool, keeping the counter-bored end toward you, and install the spring
and the opposite end cap, gasket and bumper on the valve body. After inspecting and
cleaning the gasket surfaces on the valve body and intermediate, re-install the valve
body on the pump using new gaskets. Tighten the four hex head capscrews evenly and
in an alternating cross pattern.
MODELS WITH 1" SUCTION/DISCHARGE OR LARGER, AND
NON-METAL CENTER SECTIONS
The main air valve sleeve and spool set is located in the valve body mounted on the
pump with four hex head capscrews. The valve body assembly is removed from the pump
by removing these four hex head capscrews.
With the valve body assembly off the pump, access to the sleeve and spool set is
made by removing a retaining ring (each end) securing the end cap on the valve body
assembly. With the end caps removed, slide the spool back and forth in the sleeve.
The spool is closely sized to the sleeve and must move freely to allow for proper pump
operation. An accumulation of oil, dirt or other contaminants from the pump’s air supply,
or from a failed diaphragm, may prevent the spool from moving freely. This can cause
the spool to stick in a position that prevents the pump from operating. If this is the case,
the sleeve and spool set should be removed from the valve body for cleaning and further
inspection.
Remove the spool from the sleeve. Using an arbor press or bench vise (with an
improvised mandrel), press the sleeve from the valve body. Take care not to damage
the sleeve. At this point, inspect the o-rings on the sleeve for nicks, tears or abrasions.
Damage of this sort could happen during assembly or servicing. A sheared or cut
o-ring can allow the pump’s compressed air supply to leak or bypass within the air
valve assembly, causing the pump to leak compressed air from the pump air exhaust
or not cycle properly. This is most noticeable at pump dead head or high discharge
pressure conditions. Replace any of these o-rings as required or set up a routine,
preventive maintenance schedule to do so on a regular basis. This practice should include
cleaning the spool and sleeve components with a safety solvent or equivalent, inspecting
for signs of wear or damage, and replacing worn components.
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 4
To re-install the sleeve and spool set, lightly lubricate the o-rings on the sleeve with an
o-ring assembly lubricant or lightweight oil (such as 10 wt. air line lubricant). Press the set
into the valve body easily, without shearing the o-rings. Re-install one end cap, and retaining
ring on the valve body. Using the arbor press or bench vise that was used in disassembly,
press the sleeve back into the valve body. Re-install the spool, keeping the counter-bored
end toward you, and install the spring, opposite end cap and retaining ring on the valve
body. After inspecting and cleaning the gasket surfaces on the valve body and intermediate,
re-install the valve body on the pump using new gaskets. Tighten the four hex head capscrews
evenly and in an alternating cross pattern, at 150 in./lbs. (16.94 Newton meters).
PILOT VALVE
The pilot valve assembly is accessed by removing the main air distribution valve body from
the pump and lifting the pilot valve body out of the intermediate housing (see Figure 8).
Most problems with the pilot valve can be corrected by replacing the o-rings. Always
grease the spool prior to inserting it into the sleeve. If the sleeve is removed from
the body, reinsertion must be at the chamfered side. Grease the o-rings to slide the
sleeve into the valve body. Securely insert the retaining ring around the sleeve. When
reinserting the pilot valve, push both plungers (located inside the intermediate bracket)
out of the path of the pilot valve spool ends to avoid damage.
PILOT VALVE ACTUATOR
Bushings for the pilot valve actuators are held in the inner chambers wth
retaining rings. An o-ring is behind each bushing. If the plunger has any sideways
motion check o-rings and bushings for deterioration/wear. The plunger may be removed for
inspection or replacement. First remove the air distribution valve body and the pilot valve
body from the pump. The plungers can be located by looking into the intermediate. It may
be necessary to use a ne piece of wire to pull them out. The bushing can be removed
from the inner chamber by removing the outer chamber assembly. Replace the bushings
if pins have bent (see Figure 9 and Figure 10).
FILLING OF DRIVER CHAMBER WITH LIQUID
The driver chambers are lled at the factory with distilled water.
If you need to substitute another liquid to prevent system contamination, rst consult
the factory for chemical compatibility with pump construction.
Follow the steps listed below to replace the liquid in the pump after disassembly or
liquid loss:
1. Filling is accomplished through the pipe plugs at the top of the liquid chamber.
Drain ports are at the bottom of the liquid chamber.
2. After the driver uid has been emptied from the pump, the driver diaphragms will
naturally come to center.
3. Remove the entire manifold assembly exposing the ports in the outer diaphragm
chambers.
4. Fill either side with 722 MI. or 24.6 uid oz. by volume with the driver liquid. It is
imperative that the driver liquid chambers be lled with the correct amount of driver liquid
as too little or too much will cause premature diaphragm failure and erratic pumping.
5. After lling with the proper amount of liquid, if the liquid does not come to the top
of the ll hole, pressure should be applied to the PTFE diaphragm with a blunt tool
through the material ow port in the outer chamber until the liquid comes to the top. If
the main air valve body and pilot valve are removed, the diaphragm rod will be visible in
the intermediate bracket. The hole in the diaphragm rod will assist manual movement.
Use a long taper punch to move the diaphragm rod.
6. When the driver uid rises to the top of the ll plug hole, apply pipe dope to the pipe
plug, and thread it into the chamber plug hole. (Do not use PTFE tape.) Keep pressure
on the PTFE diaphragm until the pipe plug is tight to prevent air from drawing back into
the chamber.
7. Repeat the lling procedure for opposite side.
TROUBLESHOOTING
1. Pump will not cycle
A. Check to make sure the unit has enough pressure to operate and that the air inlet
valve is open.
B. Check the discharge line to insure that the discharge line is neither closed nor
blocked.
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 5
C. If the spool in the air distribution valve is not shifting, check the main spool. It must
slide freely.
D.
Excessive air leakage in the pump can prevent cycling. This condition will be evident. Air
leakage into the discharge line indicates a ruptured diaphragm. Air leakage from the exhaust
port indicates leakage in the air distribution valve. See further service instructions.
E. Blockage in the liquid chamber can impede movement of diaphragm.
2. Pump cycles but will not pump
A. Suction side of pump pulling in air. Check the suction line for air leaks and be sure
that the end of the suction line is submerged. Check ange bolting. Check valve anges
and manifold to chamber ange joints.
B. Make certain the suction line or strainer is not plugged. Restriction at the suction is
indicated by a high vacuum reading when a vacuum gauge is installed in the suction
line.
C. Check valves may not be seating properly. To check, remove the suction line and
cover the suction port with your hand. If the unit does not pull a good suction (vacuum),
the check valves should be inspected for proper seating.
D. Static suction lift may be too high. Priming can be improved by elevating the suction
and discharge lines higher than the check valves and pouring liquid into the unit through
the suction inlet. When priming at high suction lifts or with long suction lines operate the
pump at maximum cycle rate.
E. Incorrect driver uid level or unpurged air in the chamber can cause poor
performance.
3. Low performance
A. Capacity is reduced as the discharge pressure increases, as indicated on the
performance curve. Performance capability varies with available inlet air supply. Check
air pressure at the pump inlet when the pump is operating to make certain that adequate
air supply is maintained.
B. Check vacuum at the pump suction. Capacity is reduced as vacuum increases.
Reduced ow rate due to starved suction will be evident when cycle rate can be varied
without change in capacity. This condition will be more prevalent when pumping viscous
liquids. When pumping thick, heavy materials the suction line must be kept as large in
diameter and as short as possible, to keep suction loss minimal.
C. Low ow rate and slow cycling rate indicate restricted ow through the discharge line.
Low ow rate and fast cycling rate indicate restriction in the suction line or air leakage
into suction.
D. Unstable cycling indicates improper check valve seating on one chamber. This
condition is conrmed when unstable cycling repeats consistently on alternate exhausts.
Cycling that is not consistently unstable may indicate partial exhaust restriction due
to freezing and thawing of exhaust air. Use of an anti-freeze lubricant in an air line
lubricator should solve this problem.
E. Incorrect driver uid level or unpurged air in the chamber can cause poor
performance.
For additional information, see the Warren Rupp Troubleshooting Guide.
WARRANTY
This pump is warranted for a period of ve years against defective material and
workmanship. Failure to comply with the recommendations stated in this manual voids
all factory warranty.
RECOMMENDED WARREN RUPP ACCESSORIES TO
MAXIMIZE PUMP PERFORMANCE:
•Tranquilizer® Surge Suppressor: For nearly pulse-free flow.
®
•Warren Rupp
convenience.
•Warren Rupp Speed Control: For manual or programmable process
control. (Manual adjustment or 4-20mA reception.)
For more detailed information on these accessories, contact your local
Warren Rupp Factory-Authorized Distributor, or Warren Rupp corporate
headquarters.
520-005-000 1/04
Filter/Regulator: For modular installation and service
Models ST1-A, ST25A Type 4 Page 6
Grounding The Pump
One eyelet is installed to a true earth ground.
One eyelet is fastened to the pump hardware.
WARNING
Take action to prevent static sparking.
Fire or explosion can result, especially
when handling flammable liquids. The
pump, piping, valves, containers or
other miscellaneous equipment must
be grounded.
This 8 foot long (244 centimeters) Ground
Strap, part number 920-025-000 can be
ordered as a service item.
To reduce the risk of static electrical sparking, this pump must be grounded.
Check the local electrical code for detailed grounding instruction and the
type of equipment required, or in the absence of local codes, an industry or
nationally recognized code having juristiction over specic installations.
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 7
II 2GD T5
CE
SERVICE AND OPERATING MANUAL
Model ST1-A
Model ST25A
Type 4
ITEM
NO. PART NO. DESCRIPTION QTY.
2 165-042-157 Cap, Valve Body 1
3 170-063-115 Capscrew, Hex Head 1
4 901-035-115 Washer, Flat 7
5 542-001-115 Nut, Square 1
6 170-033-115 Capscrew, Hex Head 4
Repair Parts shown in bold face (darker)
type are more likely to need replacement after
extended periods of normal use. The pump owner
may prefer to maintain a limited inventory of these
parts in his own stock to reduce repair downtime
to a minimum.
IMPORTANT: When or derin g repai r parts
always fur nish pump model number, serial
number and type number.
7 901-005-115 Washer, Flat 4
8 360-058-360 Gasket, Valve Cap 1
9 095-051-558 Body, Spool Valve 1
10 031-083-000 Sleeve & Spool Set w/Pins 1
11 165-078-147 Cap, End 2
12 675-043-115 Ring, Retaining 2
13 560-058-360 O-Ring 8
14 530-036-000 Mufer 1
15 360-057-360 Gasket 1
16 095-074-000 Pilot Valve Body Assembly1 1
16-A 095-071-551 Pilot Valve Body 1
16-B 755-025-000 Sleeve (with O-Ring) 1
16-C 560-033-360 O-Ring (Sleeve) 4
16-D 775-014-000 Spool (with O-Ring) 1
16-E 560-023-360 O-Ring (Spool) 4
16-F 675-037-080 Retaining Ring 1
17 360-056-379 Gasket 1
18 114-007-157 Bracket, Intermediate 1
19 560-040-360 O-Ring 2
20 675-040-360 Ring, Sealing 2
21 170-043-115 Capscrew, Hex Head 6
22 196-043-157 Chamber, Inner 1
23 196-042-157 Chamber, Inner 1
24 070-012-170 Bearing, Sleeve 2
25 720-010-375 Seal, U-Cup 2
26 560-001-379 O-Ring 2
27 135-034-506 Bushing 2
28 675-042-115 Ring, Retainer 2
29 620-007-114 Plunger, Actuator 2
30 685-039-120 Rod, Diaphragm 1
31 901-012-180 Washer, Sealing 2
32 132-019-360 Bumper, Diaphragm 2
33 612-022-330 Plate, Inner 2
34 286-008-365 Diaphragm 2
286-008-363 Diaphragm 2
35 612-101-110 Plate, Outer 2
36 196-023-000 Chamber Assembly 2
37 360-039-365 Gasket, Diaphragm 2
360-039-363 Gasket, Diaphragm 2
38 286-009-604 Diaphragm 2
38 286-009-604 Diaphragm 2
1
Available in Kit Form. Order P/N 031-060-000 which in-
000...Assembly, sub-assembly;
and some purchased items
010...Cast Iron
015...Ductile Iron
025…Music Wire
080...Carbon Steel, AISI B-1112
100...Alloy 20
110...Alloy Type 316 Stainless Steel
112...Alloy “C”
114...303 Stainless Steel
115...301/302/304 Stainless Steel
120...416 Stainless Steel (Wrought Martensitic)
148...Hardcoat Anodized Aluminum
150...6061-T6 Aluminum
151...6063-T6 Aluminum
154...Almag 35 Aluminum
155 or 156...356-T6 Aluminum
157...Die Cast Aluminum Alloy #380
159...Anodized Aluminum
162...Brass, Yellow, Screw Machine Stock
170...Bronze, Bearing Type, Oil Impregnated
180...Copper Alloy
330...Plated Steel
331...Chrome Plated Steel
332...Electroless Nickel Plated
335...Galvanized Steel
356...Injection Molded Hytrel
357...Rupplon (Urethane Rubber)
358…E.P.D.M. (Food Grade)
359…Polyurethane
360...Buna-N Rubber. Color coded: RED
363...Viton (Fluorel). Color coded: YELLOW
364...E.P.D.M. Rubber. Color coded: BLUE
365...Neoprene Rubber. Color coded: GREEN
366...Food Grade Nitrile. Color coded: WHITE
375...Fluorinated Nitrile
379...Conductive Nitrile
405...Cellulose Fibre
408...Cork and Neoprene
425...Compressed Fibre
440...Vegetable Fibre
500...Delrin 500
501...Delrin 570
520...Injection Molded PVDF, Natural
Color, Food Grade/USDA Acceptable
541...Nylon, Glass Filled
550...Polyethylene
551...Polypropylene
552…Unlled Polypropylene
555…PVC
558...Conductive HDPE
570…Rulon II
580...Ryton
590…Valox
600...PTFE (virgin material) Tetrauoroethylene (TFE)
603...Blue Gylon
604...PTFE, Diaphragm
608...Conductive PTFE
610…PTFE Encapsulated Silicon
611...PTFE Encapsulated Viton
632…Neoprene Rupplon
633…Viton/PTFE
634…E.P.D.M./PTFE
636…White Nitrile/PTFE
Delrin, Viton and Hytrel are registered tradenames of
E.I. DuPont.
Gylon is a registered tradename of Garlock, Inc.
Nylatron is a registered tradename of Polymer Corporation.
Rulon II is a registered tradename of Dixion Industries Corp.
Ryton is a registered tradename of Phillips Chemical Company.
Valox is a registered tradename of General Electric Company.
SandPIPER, Warren Rupp, Tranquilizer, Rupplon are registered
tradenames of Warren Rupp, Inc.
cludes items 8, 15, 17, 29, 45.
MATERIAL CODES
The Last 3 Digits of Part Number
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 8
ITEM
NO. PART NUMBER DESCRIPTION QTY.
39 196-021-110 Chamber, Outer 2
196-021-156 Chamber, Outer 2
40 170-029-115 Capscrew, Hex Head 16
41 900-004-115 Washer, Lock 26
42 545-004-115 Nut, Hex 42
43 618-003-110 Pipe, Plug 8
44 115-071-080 Brk’t. Foot, Base 1
45 132-022-360 Bumper 2
46 350-002-360 Foot, Rubber 4
47 706-013-330 Screw, Machine 4
48 547-002-330 Nut, Stop 4
49 170-045-115 Capscrew, Hex Head 4
50 905-001-015 Washer, Taper 4
51 360-030-600 Gasket, Manifold 2
52 171-010-115 Capscrew, Flanged 4
53 170-047-332 Capscrew, Hex Head 6
54 334-013-157 Porting Flange 2
334-013-110 Porting Flange 2
334-013-157E Porting Flange (BSP) 2
334-013-110E Porting Flange (BSP) 2
55 360-031-608 Gasket, Flange 4
56 050-011-600 Ball, Check Valve 4
57 722-047-110 Seat, Check Ball (Discharge) 2
58 518-020-110 Manifold 1
518-020-156 Manifold 1
60 807-024-115 Stud 16
61 618-003-330 Pipe Plug 3
65 286-015-604 Diaphragm, Overlay 2
66 132-028-552 Bumper, Spool 2
68 210-008-330 Clip, Safety 1
69 560-029-360 O-Ring 2
70 255-012-335 Coupling 3/4" NPT (Exhaust Port) 1
ITEMS NOT SHOWN:
031-111-558 Valve Body Assembly
(Includes items 9, 10,
11, 12, 13, 66, 68 & 69) 1
Repair Parts shown in bold face (darker)
type are more likely to need replacement
after extended periods of normal use. The
pump owner may prefer to maintain a limited
inventory of these parts in his own stock to
reduce repair downtime to a minimum.
IMPORTANT: When ordering repair parts
always furnish pump model number, serial
number and type number.
MATERIAL CODES
The Last 3 Digits of Part Number
000...Assembly, sub-assembly;
and some purchased items
010...Cast Iron
015...Ductile Iron
025…Music Wire
080...Carbon Steel, AISI B-1112
100...Alloy 20
110...Alloy Type 316 Stainless Steel
112...Alloy “C”
114...303 Stainless Steel
115...301/302/304 Stainless Steel
120...416 Stainless Steel (Wrought Martensitic)
148...Hardcoat Anodized Aluminum
150...6061-T6 Aluminum
151...6063-T6 Aluminum
154...Almag 35 Aluminum
155 or 156...356-T6 Aluminum
157...Die Cast Aluminum Alloy #380
159...Anodized Aluminum
162...Brass, Yellow, Screw Machine Stock
170...Bronze, Bearing Type, Oil Impregnated
180...Copper Alloy
330...Plated Steel
331...Chrome Plated Steel
332...Electroless Nickel Plated
335...Galvanized Steel
356...Injection Molded Hytrel
357...Rupplon (Urethane Rubber)
358…E.P.D.M. (Food Grade)
359…Polyurethane
360...Buna-N Rubber. Color coded: RED
363...Viton (Fluorel). Color coded: YELLOW
364...E.P.D.M. Rubber. Color coded: BLUE
365...Neoprene Rubber. Color coded: GREEN
366...Food Grade Nitrile. Color coded: WHITE
375...Fluorinated Nitrile
379...Conductive Nitrile
405...Cellulose Fibre
408...Cork and Neoprene
425...Compressed Fibre
440...Vegetable Fibre
500...Delrin 500
501...Delrin 570
520...Injection Molded PVDF, Natural
Color, Food Grade/USDA Acceptable
541...Nylon, Glass Filled
550...Polyethylene
551...Polypropylene
552…Unlled Polypropylene
555…PVC
558...Conductive HDPE
570…Rulon II
580...Ryton
590…Valox
600...PTFE (virgin material) Polytetrauoroethylene
(PTFE)
603...Blue Gylon
604...PTFE, Diaphragm
608...Conductive PTFE
610…PTFE Encapsulated Silicon
611...PTFE Encapsulated Viton
632…Neoprene Rupplon
633…Viton/PTFE
634…E.P.D.M./PTFE
636…White Nitrile/PTFE
Delrin, Viton and Hytrel are registered tradenames of
E.I. DuPont.
Gylon is a registered tradename of Garlock, Inc.
Nylatron is a registered tradename of Polymer
Corporation.
Rulon II is a registered tradename of Dixion Industries
Corp.
Ryton is a registered tradename of Phillips Chemical
Company.
Valox is a registered tradename of General Electric
Company.
SandPIPER, Warren Rupp, Tranquilizer, Rupplon are
registered tradenames of Warren Rupp, Inc.
520-005-000 1/04
Models ST1-A, ST25A Type 4 Page 9
NOTE: Usual installation for the outer chamber and
manifold is 180° from the view shown.
12
11
66
13
9
69
10
13
68
©2004 Warren Rupp, Inc. All rights reserved.
®SandPIPER, Warren Rupp, Tranquilizer are registered tradenames of Warren Rupp, Inc.
®Neverseize is a registered tradename of Loctite.
Printed in U.S.A.
520-005-000 1/04
OVERLAY UNITS
Models ST1-A, ST25A Type 4 Page 10
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