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I & M Mark 67 (1/2” – 6”)
3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
info@richardsind.com • www.jordanvalve.com
Warning: Jordan Valve pressure regulators must only be used, installed and repaired in accordance with these
Installation & Maintenance Instructions. Observe all applicable public and company codes and regulations. In the
event of leakage or other malfunction, call a qualified service person; continued operation may cause system failure
or a general hazard. Before servicing any valve, disconnect, shut off, or bypass all pressurized fluid. Before disassembling a valve, be sure to release all spring tension.
Please read these instructions carefully!
Your Jordan Valve product will provide you with long,
trouble-free service if it is correctly installed and maintained. Spending a few minutes now reading these instructions can save hours of trouble and downtime later.
When making repairs, use only genuine Jordan Valve
parts, available for immediate shipment from the factory.
Ideal Installation
Main Steam Line
3
1 2
1
1
6
Condensate Return Line
4
1
1. Shut off Valve
2. Jordan Regulator
3. Strainer and Drain Valve
4. Pressure Gauge
5. Relief Valve
6. Steam Trap
5
Installation & Maintenance Instructions for
Mark 67 Pressure Regulators
pound from getting into pipelines. Pipe-sealing
compound should be used sparingly, leaving the
two end threads clean. Jordan uses, and recommends, thread sealer Teflon ribbon.
6. The flow arrow on the valve body must be pointed
in the direction of flow. Ideally, the valve should be
installed in the highest horizontal line of piping to
provide drainage for inlet and outlet piping, to prevent water hammer, and to obtain faster response.
7. If possible, install a relief valve downstream from
the valve. Set at 15 psi above the control point of
the valve.
8. In hot vapor lines, upstream and downstream piping near the valve should be insulated to minimize
condensation.
9. In gas service, expand the outlet piping at least
one pipe size if the control pressure (downstream)
is 25% of the inlet pressure or less. A standard
tapered expander connected to the outlet of the
valve is recommended.
10. Where surges are severe, a piping accumulator is
recommended.
11. On steam control applications, install a steam trap
with sufficient capacity to drain the coil or condenser. Be sure to have a good fall to the trap, and no
backpressure. Best control is maintained if the coil
or condenser is kept dry.
Control Line
1. To protect the valve from grit, scale, thread chips
and other foreign matter, ALL pipelines and piping
components should be blown out and thoroughly
cleaned before the installation process begins.
2. Shutoff valves, pressure gauges and by-pass piping
should be installed as indicated in the diagram to
provide easier adjustment, operation, and testing.
3. A line strainer should be installed on the inlet side
of the valve to protect it from grit, scale and other
foreign matter. A 0.033 perforated screen is usually
suitable for this purpose. Line strainers are available from Jordan Valve.
4. For best control, 3’0” straight sections of pipe
should be installed on either side of the valve.
5. In preparing threaded pipe connections, care
should be exercised to prevent pipe-sealing com-
A control line must be installed as follows:
1. Connect one end of a 3/8” tubing to the fitting under the diaphragm.
2. Connect the other end in a straight run of pipe 3 to
5 feet downstream of the valve.
3. DO NOT locate the control line tap in an elbow,
swage or other changes in configuration of the
pipeline where turbulence or abnormal velocities
may occur.
4. DO NOT locate the control line tap in vessel, such
as a deaerator located immediately downstream of
the valve. Locate the tap in the pipeline leading to
the vessel.
5. The control line should be sloped away from the
valve.
6. Install a shutoff valve (not a needle valve) in the
control line.
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7. Install a pressure gauge in the control line or near
the inlet of the valve to aid in setting the valve and
checking for inlet pressure during maintenance
procedures. (There is a 1/4” NPT tapped opening
in the lower bonnet.)
Start-Up
With the inlet, outlet, and bypass shutoff valves closed,
and no pressure in the downstream line:
1. Fully open the control line shut-off valve.
2. Fully open the outlet shut-off valve.
3. Slowly open the inlet shut-off valve.
4. Slowly open the inlet valve just enough to start flow
through the valve. Observe the downstream pressure gauge. Increase the downstream pressure
slowly by gradually opening the inlet valve.
5. Do not fully open the inlet valve until you are sure
that the regulator has control of the system. Usually, the handwheel on the inlet valve will turn freely
when this is achieved.
6. To change the controlled pressure, adjust the
controlled pressure supplied to the top of the diaphragm.
7. Body and cap bolts should be re-tightened per
torque procedures after valve reaches operating
temperature.
Trouble Shooting
The first step in troubleshooting a piloted pressure regulator is to classify the action of the controlled pressure
into one of the following categories:
A. Under Pressure: Controlled pressure too low; not
enough flow or no flow through valve.
B. Over Pressure: Valve will not close or controlled
pressure increases after valve closes.
C. Pressure Fluctuates: Controlled pressure rises and
falls, will not settle out under low loads.
The next step is to determine what could cause the
trouble. The third step is to locate and remedy the cause
by the process of elimination. Make no assumptions and
check the easy ones first. The guide below lists the controlled pressure action, common causes and procedure
for checking each cause.
Controlled pressure action UNDER PRESSURE:
Valve undersized for application. Check capacity
required and valve capacity.
Line strainer or pilot strainer screen clogged. Blow
down strainers or visually check that they are clear.
Incorrect setting on range spring. Vary the setting
and check response.
Main valve diaphragm ruptured. See action on main
valve maintenance.
Malfunction of other piping components. Check
for leaking traps and safety valves, inadvertently
opened or closed valves.
Controlled pressure action OVER PRESSURE:
Incorrect setting on range spring. Vary the setting
and check response.
Pilot valve or main valve seats leaking. Close inlet
shut-off valve, allow downstream pressure to bleed
off, close outlet valve and remove loading pressure
tubing. Back out adjusting screw on pilot valve until
free (both pilot and main valves are now closed.)
Crack open inlet shut-off valve - if fluid issues from
pilot valve port, the pilot seats are leaking. If the
fluid issues from the main valve port, the main valve
seats are leaking.
By-pass shut-off leaking. During period of leakage
close outlet shut-off valve, observe downstream
pressure gauge.
Bleed port in main valve clogged/partially clogged.
Remove 1/2” NPT pipe plug in upper bonnet to
gain access to bleed port and clean bleed port.
Follow instructions in section “To Remove Main
Diaphragm.”
Controlled Pressure Fluctuates:
Valve oversized. Check capacity required and valve
capacity.
Maintenance
Caution: Ensure that the valve is de-pressurized before loosening any fittings or joints. The following
steps are recommended before performing any maintenance on the valve:
1. Allow pressure to bleed off through the downstream piping. Do not attempt to reverse the flow
through the valve by bleeding pressure from the
upstream side of the valve.
2. When the pressure gauges indicate that all pressure has been removed from the system, close the
outlet shut-off valve and the valve may be serviced.
Note: Refer to the drawing at the end of this document for description and proper orientation of parts.
Pilot Valve
1. Remove the tubing between the pilot valve and the
main valve.
2. Remove the pilot valve by unscrewing the mounting
nipple from the main valve.
Remove Pilot Valve Diaphragm
1. Release the compression of the range spring by
turning the adjusting screw counterclockwise until
free.
2. Remove the housing screws (7), spring housing (3),
spring guide (4), range spring (5), upper diaphragm
plate (6), and diaphragm (8).
Remove Pilot Valve Seats
1. Release the bottom cap (15), the return spring (16),
plug (17), stem (11), and strainer (not shown) will
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come out.
2. Unscrew the seat (13). Lapping is recommended
for replacement pilot seats.
3. Assemble the valve in reverse order.
Main Valve
It is necessary to remove the main valve from the line
only if the main valve seats must be replaced, inspected
or adjusted. All other operations can be performed with
the valve in the line and without disturbing the stroke
adjustment.
Valve Seats
A. Disassembly
The sliding Gate Seats of Jordan Valves are lapped to
light band flatness. Maintaining such tolerances is of
paramount importance for our assurance of excellent
control and tight shutoff. DO NOT use metallic objects
in removing the seats. Care in handling is imperative.
1. Follow the Maintenance procedures to remove the
valve from the line.
2. With the main valve out of the line, remove the
bolts securing the cap (2) to the body (1) and lift
the cap (2) straight up.
3. Lift the disc from the plate and place on a clean
surface with the seating side up.
4. Place the valve body on side. Hold on hand over
the plate to receive it and tap lightly on the back of
the plate with a soft, blunt object; push the plate
out evenly. Place the plate on a clean surface
seating side up.
NOTE: on 1/2” - 1-1/4” models, disc guide will also be
removed, and on 2-1/2” - 6” models, a disc spring will
be located in the cap.
Remove Main Valve
Diaphragm & Disc Pin
1. Remove the bottom cap. The spring and spring
guide will come out with it.
2. Disconnect the loading pressure tubing from the
upper bonnet, remove the bonnet bolts and upper
bonnet.
3. Lift out the diaphragm assembly consisting of the
diaphragm retainer, stroke stop shim (2-1/2” or 3”
valve size only,) diaphragm and diaphragm plate.
4. Fasten hub of diaphragm plate in a vise and
unscrew diaphragm retainer. Remove stroke stop
shim (where used) and diaphragm(s). Remove
stroke stop shim and diaphragms. 1/2” to 1-1/4”
has one diaphragm and 1-1/2” to 6” has two
diaphragms.
5. To remove stem and disc pin, hold the disc pin
with a wrench and loosen the locknut, unscrew the
stem.
6. Assemble valve in the reverse order of above,
following the procedure for stroke adjustment
outlined below.
Main Valve Stroke Adjustment
1. Do not tighten locknut on the stem; run it to the
upper end of the thread with the disc pin located at
about the center of the threaded section.
2. Place the plate and disc in the valve body so that
the disc pin protrudes through the center slot in
plate and engages the disc. Use the following as a
guide to properly install the plate and disc:
1/2” - 1-1/4” VALVE SIZES: The “V” stamp on the
side of the valve body locates the position of the
index pin hole in the face of the plate. The arrow
which is stamped on the disc should point to the
index pin hole. (Since the disc can be rotated
180° in some sizes without affecting the stroke
adjustment, there may be no arrow on the disc.)
Place disc guide over plate and disc so index pin
matches.
1-1/2” and 2” VALVE SIZES: Place the disc on the
plate and install the disc guide screws. Tighten
the screws but make sure that they do not bind
the disc against the plate. Place the assembly in
the valve body so that the orifices will be open
when the disc is stroked down. (With wording “TOP
REVERSE” on plate at the top nearest diaphragm.)
Engage the disc with the disc pin and check to be
sure that the plate seats solidly against the shoulder
in the valve body. Rotate the assembly slightly to
align the disc screws with the vertical centerline of
the valve. The arrow on the disc should be pointing
up to the working “TOP REVERSE” on the plate.
2-1/2” - 6” VALVE SIZES: The plates are stamped on
the backside with the wording “TOP DIRECT” and
“TOP REVERSE” to indicate their proper position in
the valve body. The wording “TOP REVERSE” is at
the top, nearest the diaphragm and the engraved
arrow on the disc always points to the wording
“TOP REVERSE” on the plate. Check that the index
pins in the valve body engage the plate to align the
plate in the body.
3. Place the diaphragm assembly on the stem with
the diaphragm in its recess in the lower bonnet.
Hold the diaphragm assembly firmly against the
stop in the lower bonnet and push on the bottom
of the stem so that it fully enters the socket in
the diaphragm’s retainer. In this position, the disc
should be in its lowermost position with the orifices
of the disc and plate fully aligned. If the orifices are
not fully aligned, rotate the stem clockwise to move
the disc up, or counterclockwise to move the disc
down.
4. When the orifices are perfectly aligned; remove the
disc and plate, and lock the locknut on the stem
against the disc pin. Replace the disc and plate
and recheck the orifice alignment.
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Series 67 Pilot Valve
1
Torque Procedure for Cap & Spring
Housing Bolts
1. Install all bolts and hand-tight.
2. Torque the bolts in order of the bolt pattern to a
2
value equal to ¼ of the recommended torque value.
3. Re-torque each bolt to the recommended value
3
using the same bolt pattern as shown.
4
5
Bolt Pattern / Torquing Sequence
17
16
Item Description
1 Adjusting Screw
2 Jam Nut
3 Spring Housing
4 Spring Guide
5 Range Spring
6 Upper Diaphragm Plate
7 Hex Head Cap Screw
8 Preformed Diaphragm (2 each)
9 Lower Diaphragm Plate
10 Stem Guide
11 Stem
12 1/8” Flush Plug
13 Orifice (Seat)
14 Body
15 Body Cap
16 Return Spring
17 Plug
18 Strainer
5
3
2
6
1
4
6
3
7
5
2
1
6
8
4
7
8
6 bo l ts
(or multiples)
8 bo l ts
(or multiples)
Torque Value
9
10
11
12
13
18
1415
1/2” - 2” Body/Cap: 200 in/lbs for CS, SS; 150
in/lbs for DI/BRZ
Upper Bonnet: 240 in/lbs
Pilot Dome: 350 in/lbs
2-1/2” - 6” Body/Cap: 1080 in/lbs (90 ft/lbs)
Upper Bonnet: 240 in/lbs
Pilot Dome: 350 in/lbs
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39
7
5
4
3
6
2
not shown
2
22
25
20
19
6
19
32
33
10
7
5
18
21
20
23
22
11
1/2” - 2” Mark 67
32
2-1/2” - 6” Mark 67
Illustration and Parts List
40
1/4” FNPT
Sensing Line
90° out of position
13
14
12
1
9
10
17
15
9
16
17
4
35
36
3/8” NPT
Sensing Tap
90° out of
position
40
35
36
37
41
13
14
12
1
ITEM DESCRIPTION
1 Body
2 Cap
3 Lower Case (2-1/2” to 6” only)
4 Upper Case
5 Diaphragm
6 Diaphragm Plate
7 Diaphragm Retainer
9 Spring Seat
10 Return Spring
11 Gasket (Lower case) (2-1/2 - 6” only)
12 Stem
13 Locknut
14 Disc Pin
15 Stem Bushing
16 Gasket (Bottom Cap) (2-1/2” - 6” only)
17 Bottom Cap
18 Gasket (Body)
*19 Plate
20 Guide Pin (not on 1-1/2” and 2”)
21 Gasket (Cap) (2-1/2” to 6” only)
*22 Disc
*23 Disc Spring (2-1/2” to 6” only)
25 Disc Guide Screw (1-1/2” and 2”)
32 Cap Screw
33 Lock Washer (2-1/2” to 6” only)
35 Bolt
36 Nut
37 Cap Screw (2-1/2” to 6” only)
39 Stroke Stop Shim (2-1/2” to 3” only)
40 Pipe Plug
41 Lock Washer
* Recommended Spare Parts
Bulletin IM-MK67-0511
3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
info@richardsind.com • www.jordanvalve.com
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