Type 4A Valve

The Type 4A right angle pressure relief valves are designed to automatically discharge the excess process medium, so as to prevent a predetermined safe pressure being exceeded. They are suitable for use on compressed air, gas, water, oil and steam. These valves are used in a variety of applications throughout industry, where their outstanding accuracy and reliability have been proven.Valves are supplied in sizes half inch to eight inch in Gunmetal, Aluminium Bronze, Stainless Steel and Carbon Steel. With ends screwed female or alternatively flanged to customers requirements. The maximum set pressure is 21.0 Barg. (Consult Broady Technical Sales Engineers for further information).

All valves are supplied with a nitrile disc for air, gases, water, oils, etc., but other materials are available on request. Valves for steam and high pressure service are supplied with a metal to metal valve lid.

Pressure is admitted to the underside of the valve lid until the force on the valve lid matches that of the spring load. As the pressure force increases beyond that of the spring load the valve will open, allowing the medium to be discharged. When the pressure falls below that of the set pressure, the spring force becomes dominant which results in the valve closing. The set pressure can be varied to requirements by compressing or relaxing the spring. The adjusting screw is provided for this purpose. Compressing the spring increases the set pressure, relaxing the spring decreases the set pressure.

For further information please contact Broady Flow Control

Type_4A.pdf

SD23-4A-RV.xls