Gas pressure regulator specifications 121

Gas pressure regulator type 121

The Sensus type 121 gas pressure regulator is a spring-loaded regulator. The regulator is normally open. The controller has a single diaphragm with a balanced valve. This makes the controller extremely suitable for precise pressure control with fast successive changes in pressure and flow capacity. Depending on the operating conditions you can choose between a membrane box of 8 “, 12″ or 16 ” diameter. The regulator is available in connection sizes ranging from 3/4 “up to 4”.

Types

121-8, 121-12 and 121-16.

Maximum inlet pressure

The maximum inlet pressure = 4.2 barg (60 psig) for connection sizes up to 2.1 / 2 “.

The maximum inlet pressure = 2.8 barg (40 psig) for connection size 3 “.

The maximum inlet pressure = 1.0 barg (15 psig) for connection size 4 “.

Operating temperature

-28.9 – +65.5° C (-20° F +150° F).

Spring range outlet pressure

12.0 – 700.0 mbarg (with different springs).

Connection sizes

3/4 “, 1”, 1.1/4 “, 1.1/2”, 2 “, 2.1/2” NPT.

Flanged in DN50 PN10, 2 “ANSI125lbs, 3” ANSI125lbs and 4 “ANSI125lbs.

Applicable gases

Natural gas, propane, butane, air and nitrogen. Various designs are available for special (corrosive) gases.

Options

V-port, for better control at minimum flow.

For special versions that were available in the past, please contact us.