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Installation Manual
Content
December 2020
Installation Manual
TR000238ENUS-01_12-20
6. Dome/Combination Spring and Dome Loaded Regulators are more easily
reassembled by holding regulator firmly in vise and reinstalling dome.
7. Self-Venting Regulator - If your regulator has an adjustable relief valve mechanism, it
is set on final assembly at the factory and usually will not require further adjustment.
If adjustment becomes necessary, use the following procedure after regulator has
been installed.
Step 1.
Remove hole plug in control knob.
Step 2.
Using control knob, apply 10 to 15 psi on downstream side.
Step 3.
Turn clockwise vent adjusting screw (located under hole plug) until
media can be heard escaping through vent valve.
Step 4.
Turn screw counterclockwise until media flow stops, plus 1/2 turn.
Replace hole plug.
8.
Reinstalling wire mesh inlet filter: Insert filter into primary inlet port. It then must
be expanded to fit correctly. This can be accomplished by inserting a metal tool the
same size as the port and then lightly tapping it with a hammer.
WARNING
After regulator has been reassembled, it MUST be connected to a pressure source with
media compatible with the use of the regulator and pressurized to check for internal and
external leakage and operating characteristics.
Pressure Reducing Regulators - Piston-Sensed
General
TESCOM piston sensed pressure reducing regulators are specifically engineered for
applications requiring dependable pressure regulation. These regulators are especially
appropriate for installations where high system pressures (up to 20,000 psi) must be
reduced to levels suitable for actuating low pressure (0 to 20,000 psi) instruments and
related equipment.
Pressure Activation Methods
TESCOM uses four basic types of activation methods. The activation method provides the
means by which the operator can set the force that determines the outlet pressure of a
regulator.
Control Knob: Delivery pressure is increased by turning the control knob. The control knob
applies a load through a spring to the piston.
Dome Load: Delivery pressure is increased by applying pressurized gas or liquid to the dome
of a regulator at a pressure equal to the outlet pressure desired. This dome pressure is
normally provided by a second regulator called the pilot regulator.
Combination Spring and Dome: Delivery pressure is increased by applying a spring force as
well as the introduction of pressurized gas or liquid.
Air Actuated (Multiplier): Delivery pressure is controlled by applying 0-100 psig pilot
pressure to the air actuator, resulting in full outlet pressure range control.
3.2.1
3.2.2
3.2
