FISHER 289L-21 relief Valves or Backpressure Regulators

289L-21: 1” NPT port size, discharge pressure 12 - 40WC.

FISHER 289L-21

Basic Parameters

Caliber: 1 inch NPT.

Discharge pressure: 12-40WC.

Other features

Connection form: internal threaded connection, easy to install and better sealing.

Material: cast iron, with a certain degree of strength and corrosion resistance, can adapt to a variety of working environments.

Applicable medium: natural gas, air and other common gases.

Form: diaphragm structure, high sensitivity, able to respond quickly to pressure changes.

Pressure environment: atmospheric pressure, suitable for low-pressure system pressure control.

Flow direction: unidirectional, to ensure that the gas or fluid flows in accordance with the specified direction, to prevent reverse flow causing system failure.