The Type ‘G’ Fig. No. A71 Surplus, or Diaphragm assisted relief valve is single seated, diaphragm controlled and spring regulated.
The pressure of the system being relieved, acting upon the diaphragm provides a sensitive control of the valve opening in accordance with the regulating spring setting.
An ideal valve for installations where a direct spring loaded type is too insensitive to pressure or flow changes.
Protects systems from overpressure
Monitors pump outputs
For water, air, gas, oil or chemical services.