Jordan-valve Mark 75 Series – Wafer Style Control Valve User Manual download pdf

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone 513-533-5600 • Fax 513-871-0105

[email protected] • www.jordanvalve.com

I & M Mark 75 (6” – 8”)

Installation & Maintenance Instructions for

Mark 75 Wafer Control Valve

Warning: Jordan Valve Control Valves must only be used, installed and repaired in accordance with these Installa-

tion & 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 main-

tained. Spending a few minutes now reading these in-

structions 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

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 pip-

ing should be installed as indicated in the diagram

above 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 avail-

able from Jordan Valve.

4. For best control, 3’ 0” straight sections of pipe

should be installed on either side of the valve.

5. The disc in the valve body must be positioned

in the upstream portion of the ﬂow, and the set-

screws should be on the downstream side of the

valve. Ideally for steam applications, the valve

should be installed in the highest horizontal line of

piping to provide drainage for inlet and outlet pip-

ing, to prevent water hammer, and to obtain faster

response.

6. If possible, install a relief valve downstream from

the valve. Set at 15 psi above the control point of

the valve.

7. In hot vapor lines, upstream and downstream pip-

ing near the valve should be insulated to minimize

condensation.

8. In gas service, expand the outlet piping at least

one pipe size, if the control pressure (downstream)

is 25 percent of the inlet pressure or less. A stan-

dard tapered expander connected to the outlet of

the valve is recommended.

9. Where surges are severe, a piping accumulator is

recommended.

10. On steam control applications, install a steam trap

with sufﬁcient capacity to drain the coil or condens-

er. 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.

11. Tighten pipe ﬂange bolts just enough to effect a

good seal.

Start-Up Procedure

1. Be sure that the action of the control valve and of

the controller are such that you achieve the desired

results.

Increase in

pressure or

temperature must:

And the action of

the valve is:

Then the action

of the controller

must be:

Close Valve Air to Close (Direct) Direct

Close Valve Air to Open (Reverse) Reverse

Close Valve Air to Close (Direct) Reverse

Close Valve Air to Open (Reverse) Direct

Main Line

Condensate Return Line

1. Shut off Valve

2. Jordan Control Valve

3. Strainer and Drain Valve

4. Pressure Gauge

5. Relief Valve

6. Steam Trap

7. Pipe Union

Control Air

PROTECT VALVES WITH LINE STRAINERS

1 2 3 4 5

Summary of Contents

Page 1 - Ideal Installation

3170 Wasson Road • Cincinnati, OH 45209 USAPhone 513-533-5600 • Fax [email protected] • www.jordanvalve.comI & M Mark 75 (6

Page 2 - Valve Seats

solvent. Remove Shoulder Screws (43) and Wave Springs (51), the Disc (48) and Plate (47) can then be cleaned. Place a piece of 4/0 polishing cloth or

Page 3 - Actuator

-3-care that the “T” slot in the Disc (48) engages the head of the valve stem. The word ”TOP” should be towards the actuator.11. Replace the Set Sc

Page 4 - Spring Adjustment

preload adjustment may be required after one of the previous maintenance procedures. Note: valves are bench set at the factory. To open at 2 psig over

Page 5

Illustration and Parts List (6” - 8”)Item Description Quantity Item Description Quantity1 Packing Spring 1 27 HHCS, 3/8-16x1.5 42 Packing Retainer 1 2

Jordan-valve Mark 75 Series – Wafer Style Control Valve User Manual

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Browse online or download User Manual for Control panel Jordan-valve Mark 75 Series – Wafer Style Control Valve. Jordan Valve Mark 75 Series – Wafer Style Control Valve User Manual

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