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National Stock Number:
4820-01-025-6844
Federal Supply Class:
4820
National Item Identification Number:
010256844
Description:
VALVE,SAFETY RELIEF
Detail:
A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.
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Manufacturer Information:
| 3978-4 | 22501 | HOWELL LABORATORIES INC | | 3978-4SET20 | 22501 | HOWELL LABORATORIES INC |
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Techincal Specification:
| ADJUSTABLE PRESSURE RANGE | +0.5 TO 2.4 POUNDS PER SQUARE INCH | | CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS | | CONNECTION STYLE | PLAIN (TUBE) ALL ENDS | | FLOW CONTROL DEVICE | DISK | | MATERIAL | ALUMINUM BODY | | MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING | | MAXIMUM OPERATING PRESSURE | 150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | | MAXIMUM OPERATING TEMP | 280.0 FAHRENHEIT SINGLE RESPONSE | | MEDIA FOR WHICH DESIGNED | REFRIGERANT 12 2ND RESPONSE | | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE | | NOMINAL THREAD SIZE | 0.562 INCHES ALL ENDS | | STYLE DESIGNATOR | STRAIGHT THRU | | SURFACE TREATMENT | ANODIZE | | THREAD CLASS | 3A ALL ENDS | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | THREAD QUANTITY PER INCH | 18 ALL ENDS | | THREAD SERIES DESIGNATOR | UNJ ALL ENDS | | VALVE OPERATION METHOD | AUTOMATIC |
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