Jordan Valve Mark 87 Series - Piloted Temperature 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 87 Series
Installation & Maintenance Instructions for
Mark 87 Temperature Regulators (1/2” – 6”)
Warning: Jordan Valve temperature 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
To protect the regulator from grit, scale, thread chips, 1.
and other foreign matter, all pipe lines and piping
components should be blown out and thoroughly
cleaned before the valve is installed.
Shutoff valves, pressure gauges, and bypass 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 taken to prevent pipe sealing compound
from getting into the pipe lines. Pipe sealing com-
pound should be used sparingly, leaving the two
lead threads clean. Jordan uses, and recommends,
Seyco #2415 thread sealer Teflon ribbon.
A line strainer should be installed on the inlet side of 4.
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 valve may be
installed vertically or horizontally without affecting its
operation.
For best control, 3’0” straight sections of pipe should
7.
be installed on either side of the valve.
To minimize condensation in hot vapor lines, up-
8.
stream and downstream piping near the regulator
should be insulated.
For injection heating applications, the regulator
9.
should be installed above the maximum water level
in the tank, or a check valve should be installed to
prevent water from backing up into the regulator.
For best regulation, the temperature regulator
10.
should be installed as closely as possible to the unit
in which the temperature is being controlled.
On steam control applications, install a steam trap
11.
of sufficient capacity to drain the coil or condenser.
Be sure to have a good fall to the trap, and no back
pressure. Best control is obtained when the coil or
condenser is kept dry.
Where surges are severed, a piping accumulator is
12.
recommended.
Operation
The direct acting pilot valve is normally open, allowing
the upstream pressure to force the main diaphragm
down to open the main valve seats. As the process
temperature approaches the desired setting, the fluid
in the bulb vaporizes, creating the necessary pressure
on the pilot diaphragm to throttle the pilot valve toward
the closed position. This starves the pressure supply
to the main diaphragm and the lower spring beings to
close the main valve. The reverse acting pilot is normally
closed, and opens on an increase in temperature.
4
1
3
1
1
5
Condensate
Return Line
Main Steam
Line
2
By-Pass Line
Steam
Trap
2
1 1
4
R
6
7
1. Shutoff Valve
2. Pipe Union
3. Strainer & Drain Valve
4. Pressure Gauge
5. Jordan Regulator
6. Relief Valve
7. Thermal Bulb