Pressure restricting angle valves
description : The valves are capable of adjustment to provide a range of the outlet pressures under flowing condition only.
For Hose Connections to be used on fire protection standpipe system with maximum working pressure up to 300 PSI
Technical data
• Rated pressure as:
– Pressure restricting valve: 175 PSI
– Max rated pressure: 300 PSI
Materials
• Body: forged brass CuZn40Pb2 in accordance with European Standard EN 12165 CW617N, similar to American Standard
ASTM B124 C37700
– Yield stress of the material in the shape of bar: 360 MPa
– Stress for permanent distortion R(0.2): 138 MPa
– Elongation: 10 %
• Bonnet: forged brass CuZn40Pb2 in accordance with European Standard EN 12165 CW617N, similar to American Standard
ASTM B124 C37700
• Stem: brass EN 12164 CW614N similar to American Standard ASTM B124 C37700
• Handwheel: red painted aluminum
Maintenance
The valves require no special maintenance. Conduct periodic hydraulic tightness test and check the correct manoeuvrability.
In case of damage of the seal seat or of the bonnet, the valve must be replaced. However it is recommended to replace the
valve after a lifetime of ten years.
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A155
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