SANDPIPER ST25 User Manual

II 2GD T5

SERVICE & OPERATING MANUAL

Original Instructions

Model ST1 Type 5

See pages 17 & 18
for ATEX ratings

Model ST25 Type 5

Table of Contents

Engineering Data, Temperature Limitations & Performance Curve ....................... 1

Explanation of Pump Nomenclatur ........................................................................ 2

Dimensions ............................................................................................................ 3

Principle of Operation ............................................................................................ 4

Installation and Start-Up ........................................................................................ 4

Air Supply .............................................................................................................. 4

Air Inlet & Priming .................................................................................................. 5

Air Exhaust ............................................................................................................ 5

Between Uses ....................................................................................................... 5

Check Valve Servicing ........................................................................................... 5

Diaphragm Servicing ............................................................................................. 5

Air Valve Lubrication .............................................................................................. 6

ESADS+Plus®:

Externally Serviceable Air Distribution System .............................6-7

Pilot Valve .............................................................................................................. 8

Pilot Valve Actuator ................................................................................................ 8

Service Instructions: Troubleshooting ................................................................... 8

Warranty ................................................................................................................ 9

Recommended Accessories .................................................................................. 9

Important Safety Information ............................................................................... 10

Recycling ............................................................................................................. 10

Grounding The Pump .......................................................................................... 11

Material Codes .................................................................................................... 12

Composite Repair Parts List ........................................................................... 13-14

Composite Repair Drawing.................................................................................. 15

CE Declaration of Conformity - Machinery .......................................................... 16

CE Declaration fo Conformity - ATEX .................................................................. 17

Explanation of ATEX Certication ........................................................................ 18

st1dl5sm-rev0614

Warren Rupp, Inc. • A Unit of IDEX Corporation • 800 N. Main St., Manseld, Ohio 44902 USA

Telephone [phone] • Fax [phone] • warrenrupp.com

©Copyright 2014 Warren Rupp, Inc. All rights reserved.

Quality System

See page 2
for ATEX ratings.

ISO9001 Certied

Environmental

Management System

ISO14001 Certied

Containment Duty

ST1

Type 5

ST25 Type 5

Air-Operated
Double Diaphragm Pump

INTAKE/DISCHARGE PIPE SIZE

ST1: 1” NPT (internal)

ST25: 1” BSP Tapered (internal)

CAPACITY

0 to 42 gallons per minute
(0 to 159 liters per minute)

See pages 17 & 18
for ATEX ratings.

AIR VALVE

No-lube, no-stall

design

SOLIDS-HANDLING

Occational solids only,
to nearly .25” (6.3mm)

ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA

HEADS UP TO

125 psi or 289 ft. of water

2

(8.8 Kg/cm

or 88 meters)

DISPLACEMENT/STROKE

.09 Gallon / .34 liter

SANDPIPER® Containment Duty Pumps: Sealless Safety

This pump is part of the Containment Duty Pumps. It is specially tted with PTFE diaphragms as well as elastomeric or elastomeric/PTFE driver diaphragms. The liquid-lled
spill chambers provide an additional chemically-resistant barrier, should a pumping diaphragm fail. The Spill Containment design gives the pump user advanced warning of
diaphragm failure, before pumpage can damage the air valve or be released into the work environment. Three optional leak detectors available for this model:

• Mechanical VIP Leak Detector* 031-025-000 • Electronic Leak Detector* (115V) 032-043-000 • Electronic Leak Detector* (220V) 032-043-000

The Containment Duty pumps offer many different levels of materials and spill monitoring devices designed to t a variety of applications and budgets.
* Leak Detectors are not ATEX Compliant

BAR

7

100

90

6

80

5

70

60

4

50

HEAD

3

40

30

2

PSI

100 PSI

80 PSI

60 PSI

40 PSI

AIR CONSUMPTION

SCFM (M

10(17)

3

/hr)

15(25.4)

20(34)

MODEL ST1/ST25 Performance Curve

Performance based on the following: elastomer fitted pump, flooded suction,

water at ambient conditions. The use of other materials and varying hydraulic

25(42.5)

30(51)

conditions may result in deviations in excess of 5%.

35(59.5)

40(68)

45(76.5)

50(85)

st1dl5sm-rev0614

20

1

20 PSI Air Inlet Pressure

10

0

0

0

4 8

12 16

20

24

28 32

36

40

US Gallons per minute

0 20 40 60 80 100 120 140 150

Liters per minute

CAPACITY

SANDPIPER® pumps are designed to be powered only by compressed air.

Models ST1 & ST25 Page 1

0 to 42 gallons per minute

(0 to 159 liters per minute)

Occasional solids only,

to nearly

1

/4"

(6.3 mm)

125 psi or 289 ft. of water

(8.8 Kg/cm2 or 88 meters)

MATERIALS OF CONSTRUCTION

INTAKE/DISCHARGE PIPE SIZE CAPACITY AIR VALVE SOLIDS-HANDLING HEADS UP TO

No-lube, no-stall

design.

PERFORMANCE CURVES

(SANDPIPER® pumps are designed to be powered only by compressed air)

Temperature Limit: 212

°F -

100°C

MAXIMUM

SANDPIPER® Containment Duty Pumps: Sealless Safety

This pump is part of the Containment Duty Pumps. It is specially fitted with PTFE diaphragms as well as elastomeric or elastomeric/PTFE driver diaphragms. The liquid-filled spill chambers
provide an additional chemically-resistant barrier, should a pumpIng diaphragm fail. The Spill Containment design gives the pump user advanced warning of diaphragm failure, before
pumpage can damage the air valve or be released into the work environment. Three optional leak detectors available for this model:

• Mechanical VIP Leak Detector 031-026-000 • Electronic Leak Detector (115V) 032-043-000 • Electronic Leak Detector (220V) 032-043-000

The Containment Duty pumps offer many different levels of materials and spill monitoring devices designed to fit a variety of applications and budgets.

ST1 & ST25
Performance based on water
at ambient temperature.
Average displacement per
pump stroke: 0.34 liter.

SANDPIPER

®

Models

SANDPIPER

®

Models
ST1 & ST25
Performance based on water
at ambient temperature.
Average displacement per
pump stroke: .09 gallon.

ST1: 1" NPT

ST25: 1" BSP Tapered

Containment Duty

ST1 Type 4
ST25 Type 4

Air -Operated
Double-Diaphragm Pump

ENGINEERING, PERFORMANCE
& CONSTRUCTION DATA

Quality System

ISO9001 Certified

Environmental

Management System

ISO14001 Certified

®

II 2GD T5

Explanation of Pump Nomenclature

MATERIALS OF CONSTRUCTION

To order a pump or replacement parts, rst enter the Model Number ST1, or ST25, followed by the Type Designation listed below in the far left column.

Porting

Type 5

DNG5A. X AL356T6 AL356T6 AL356T6 AL380DC 316SS PS AL380DC 416SS 316SS 304SS T/N T T PE AL380DC 46

DVG5A. X AL356T6 AL356T6 AL356T6 AL380DC 316SS PS AL380DC 416SS 316SS 304SS T/V T T PE AL380DC 46

DGNG5A. X AL356T6 AL356T6 AL356T6 AL380DC 316SS PS AL380DC 416SS 316SS 304SS T/T/N T T PE AL380DC 46

DNG5SS. X SS SS

DVG5SS. X AL356T6 AL380DC 316SS PS AL380DC 416SS 316SS 304SS T/V T T PE AL380DC 67

DGNG5SS. X AL356T6 AL380DC 316SS PS AL380DC 416SS 316SS 304SS T/T/N T T PE AL380DC 67

DNG5HC. X AL356T6 AL380DC PS AL380DC 416SS 304SS T/N T T PE AL380DC 67

Kit available to convert to top porting

Meanings of
Abbreviations:

Manifold

Manifold Inner

Side

Chamber

SS SS

SS SS

Alloy C Alloy C Alloy C Alloy C

AL = Aluminum
DC = Die Cast
PS = Plated Steel
HC = Alloy C
SS = Stainless Steel
PE = Conductive HDPE

Driver

Outer

Chamber

AL356T6 AL380DC 316SS PS AL380DC 416SS 316SS 304SS T/N T T PE AL380DC 67

Chamber

Outer

Diaphragm

Plate

304SS = 304 Stainless Steel except
Manifold Bolts which are PS
T = PTFE
T/N = PTFE Diaphragm/Neoprene Driver

PTFE Diaphragm/FKM Driver

T/V =
T/T/N =

PTFE Diaphragm/PTFE over Neoprene Driver

Inner

Diaphragm

Plate

Intermediate

Housing

Rod

ware

Seat

Diaphragm

Hard-

Valve

Ball

Valve

Material

II 2 G c T5

II 3/2 G c T5

II 2 D c T100oC

All models, including pumps equipped with
Aluminum wetted and midsection parts.

See page 18 for ATEX Explanation of Type

Examination Certicate.

Seat/

Manifold

Gasket

Valve

Materials

NEOPRENE All purpose. Resistant to vegetable oils. Generally not affected by moderate chemicals, fats,

greases and many oils and solvents. Generally attacked by strong oxidizing acids, ketones, esters, nitro
hydrocarbons and chlorinated aromatic hydrocarbons.

PTFE Chemically inert, virtually impervious. Very few chemicals are known to react chemically with

PTFE: molten alkali metals, turbulent liquid or gaseous uorine and a few uoro-chemicals such as
chlorine triuoride or oxygen diuoride which readily liberate free uorine at elevated temperatures.

FKM (Fluorocarbon) shows good resistance to a wide range of oils and solvents; especially all aliphatic,
aromatic and halogenated hydrocarbons, acids, animal and vegetable oils. Hot water or hot aqueous solu
tions (over 70°F) will attack FKM.

Maximum and Minimum Temperatures are the limits for which
these materials can be operated. Temperatures coupled with
pressure affect the longevity of diaphragm pump components.
Maximum life should not be expected at the extreme limits of
the temperature ranges.

Operating Temperatures

Maximum Minimum

200°F -10°F
93°C -23°C

220°F -35°F
104°C -37°C

-

350°F -40°F
177°C -40°C

Air

Shipping

CapDiaphragm

Wt. (lbs)

CF-8M Stainless Steel equal to or exceeding ASTM specication A743 for corrosion resistant iron

‡

chromium, iron chromium nickel, and nickel based alloy castings for general applications. Commonly
referred to as 316 Stainless Steel in the pump industry.

ALLOY C CW-12MW equal to or exceeding ASTM A494 specication for nickel and nickel alloy castings.

For specic applications, always consult “Chemical Resistance Chart" Technical Bulletin

st1dl5sm-rev0614

Models ST1 & ST25 Page 2

Maximum* Minimum* Optimum**

Operating Temperatures

NEOPRENE All purpose. Resistant to vegetable oils. Generally not affected by moderate
chemicals, fats, greases and many oils and solvents. Generally attacked by strong oxidizing acids,
ketones, esters, nitro hydrocarbons and chlorinated aromatic hydrocarbons.

PTFE Chemically inert, virtually impervious. Very few chemicals are known to chemically react
with PTFE: molten alkali metals, turbulent liquid or gaseous fluorine and a few fluoro-chemicals
such as chlorine trifluoride or oxygen difluoride which readily liberate free fluorine at elevated
temperatures.

170°F -35°F50°F to 130° F

77°C -37°C10°C to 54°C

212°F+ -35° F50°F to 212° F

100°C+ -37°C10°C to 100°C

MATERIALS

212°F+ +35° F75°F to 212°F

100°C+ 0°C24°C to 100°C

*Definite reduction in service life.
**Minimal reduction in service life at ends of range.

FKM Shows good resistance to a wide range of oils and solvents; especially all aliphatic,
aromatic and halogenated hydrocarbons, acids, animal and vegetable oils. Hot water or hot
aqueous solutions (over 70ºF) will attack FKM.

For specific applications, always consult "Chemical Resistance Chart" Technical Bulletin.

STAINLESS STEEL CF-8M equal to or exceeding ASTM specification A743 for corrosion resistant iron chromium, iron chromium
nickel, and nickel based alloy castings for general applications. Commonly referred to as 316 Stainless Steel in the pump industry.

ALLOY C CW-12MW equal to or exceeding ASTM A494 specification for nickel and nickel alloy castings.

Dimensions: ST1 & ST25

Dimensions are ± 1/8"

Figures in parenthesis = millimeters

Tapered

14. 9/32

(363)

4. 3/32

(104)

(313)

12. 5/16

Dimensional outlines available showing
optional top and bottom porting.

(116)

4. 9/16

Tapered

(17)

11/16

Optional installation
4 rubber feet.

Model ST1 features NPT threaded connections.

Model ST25 features British Standard Pipe (BSP)
Tapered threaded connections.

(176)

(349)

13. 3/4

6. 15/16
5/8

(16)

st1dl5sm-rev0614

Models ST1 & ST25 Page 3

II 2GD T5

SERVICE & OPERATING MANUAL

Model ST1 Type 5

See pages 17 & 18
for ATEX ratings

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
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
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
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.

Model ST25 Type 5

Original Instructions

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

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.

®

surge suppressor is recommended to further reduce

AIR SUPPLY

Air supply pressures cannot exceed 125 psi (8.61 bar). Connect the pump air inlet

to an air supply of sufcient 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.

st1dl5sm-rev0614

Models ST1 & ST25 Page 4