Jordan Valve Mark 56 Series – Air Loaded Back Pressure Regulator User Manual

Ideal installation, I & m mark 56, Control line

3170 Wasson Road • Cincinnati, OH 45209 USA

Phone 513-533-5600 • Fax 513-871-0105

I & M Mark 56

Installation & Maintenance Instructions for

Mark 56 Air Loaded Back Pressure Regulators

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 disas-
sembling 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

Protect the regulator from grit, scale, thread chips
and other foreign matter, by blowing out and thor-
oughly cleaning all pipe lines and piping compo-
nents before the regulator is installed.

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.

When preparing threaded pipe connections, care
should be exercised to prevent pipe sealing com-
pound from getting into the pipe lines. Pipe sealing
compound should be used sparingly, leaving the
two lead threads clean.

A line strainer should be installed on the inlet side
of the regulator to protect it from grit, scale, and

other foreign matter. A 0.033” perforated screen is
usually suitable. Line strainers are available from
Jordan Valve.

Install the regulator in the highest horizontal line of
piping to provide drainage for inlet and outlet pip-
ing, to prevent water hammer, and to obtain faster
regulation.

The flow arrow on the regulator body must be
pointed in the direction of flow. The regulator may
be installed in any direction, but damage to the
seating surfaces may occur if installed in a vertical
line with the flow upwards.

For best control, 3’0” straight sections of pipe
should be installed on either side of the regulator.

In hot vapor lines, upstream and downstream pip-
ing near the regulator should be insulated to mini-
mize condensation.

Expand the outlet piping at least one pipe size if
the controlled pressure (downstream) is 25 percent
of the inlet pressure or less. A standard tapered
expander connected to the outlet of the regulator
is recommended.

10. Where surges are severe, a piping accumulator is

recommended.

Control Line

Install a control line as follows:
1.

Connect 3/8” O.D. tubing to the fitting under the
diaphragm.

Connect the other end in a straight run of pipe
three to five feet upstream from the regulator.

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. DO NOT locate the control line tap in
a vessel, such as a deaerator, located immediately
upstream of the regulator. Locate the tap in the
pipeline leading to the vessel.

The control line should be sloped away from the
regulator.

Install a shutoff valve (not a needle valve) in the
control line.

Install a pressure gauge in the control line or near
the inlet of the regulator to aid in setting the valve.

Main Steam Line

Condensate Return Line

1. Shut-Off Valve

2. Jordan Regulator

3. Strainer and Drain Valve

4. Pressure Gauge

5. Relief Valve

6. Steam Trap

7. Panel Loading Station

Plant Air