The A3 was first produced in 1965 as a Pressure Relief Valve for SOLAS type liferafts. The new B10 valve is now the favoured valve for this application.
However, due to the high sensitivity of the A3 Valve it is still ideal for close control of pressures in large structures. This is due to the opening and closing pressures on the valve being very close together.
The A3 Valve is available in a version that allows topping-up through the valve – please ask for the A3 SRTU type Valve.
The bonded flange is available in natural rubber for low temperature from –40ºC to +80ºC or in Neoprene for –20ºC to +80ºC.
A wide range of pressure settings is available – please see Pressure Selection Chart.