Jordan Valve Mark 52 Series – Internally Piloted Regulator - Manual

3170 Wasson Road • Cincinnati, OH 45209 USA
Phone 513-533-5600 • Fax 513-871-0105
[email protected] • www.jordanvalve.com
I & M Mark 52
Installation & Maintenance Instructions for
Mark 52 Piloted 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.
This pilot operated regulator was designed to handle
your more critical inlet pressure or relief applications.
It will accurately control pressure to 100% of its rated
flow capacity with only the slightest deviation from the
set point. This is comparable to controller operated
accuracy, and on most critical applications should be
considered before costly, more refined instruments. It is
designed to handle a wide range of control pressures.
Ideal Installation
To protect the regulator from grit, scale, thread 1.
chips and other foreign matter, all pipe lines and
piping components should be blown out and thor-
oughly cleaned before the regulator is installed.
Shut-off valves, pressure gauges and by-pass piping
2.
should be installed as indicated in the diagram to
provide easier adjustment, operation and testing.
In preparing threaded pipe connections, care
3.
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. Jordan uses, and recom-
mends, Seyco #2415 thread sealer Teflon ribbon.
A line strainer should be installed on the inlet side
4.
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
5.
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
6.
pointed in the direction of flow. The regulator may
be installed vertically or horizontally without affect-
ing its operation.
For best control, 3’ 0” straight sections of pipe
7.
should be installed on either side of the regulator.
To minimize condensation in hot vapor lines, up-
8.
stream and downstream piping near the regulator
should be insulated.
If possible, install a relief valve upstream from the
9.
regulator. Seat at 15 psi above the control point of
the regulator.
Expand the outlet piping at least one pipe size if
10.
the downstream pressure is 25 percent of the in-
let pressure or less. A standard tapered expander
connected to the outlet of the regulator is recom-
mended.
Where surges are severe, a piping accumulator is
11.
recommended.
Operation
The main valve and the pilot are normally closed. The
inlet pressure passes through the inlet pilot tubing be-
neath the pilot diaphragm. As the force of the adjusting
spring is overcome, the pilot valve opens allowing the
inlet pressure to enter the chamber above the main dia-
phragm, opening the main valve. When the set point is
Main Line
Condensate Return
1. Shut off Valve
2. Pipe Union
3. Strainer and Drain Valve
4. Pressure Gauge
5. Jordan Mark 52
6. Steam Trap
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