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National Stock Number:
4820-00-450-6539
Federal Supply Class:
4820
National Item Identification Number:
004506539
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:
| 166L068-3 | 0W6H8 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 166L068-3 | 78022 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 4644-1 | 78357 | PARKER-HANNIFIN CORPORATION |
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Techincal Specification:
| CONNECTION TYPE | THREADED EXTERNAL TUBE FIRST END | | CONNECTION STYLE | FLARED (TUBE) FIRST END | | DISK LOADING METHOD | SPRING | | FLOW CONTROL DEVICE | POPPET | | MATERIAL | ALUMINUM ALLOY BODY | | MATERIAL | ALUMINUM ALLOY SEAT | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES FIRST END | | NOMINAL THREAD SIZE | 0.437 INCHES FIRST END | | OPENING PRESSURE SETTING | 1425.0 POUNDS PER SQUARE INCH | | SEAT ANGLE | 37.0 DEGREES FIRST END | | STYLE DESIGNATOR | ANGLE | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED | | SURFACE TREATMENT | ANODIZE LOCATION NOT OTHERWISE SPECIFIED | | THREAD CLASS | 3A FIRST END | | THREAD DIRECTION | RIGHT-HAND FIRST END | | THREAD QUANTITY PER INCH | 20 FIRST END | | THREAD SERIES DESIGNATOR | UNF FIRST END | | VALVE OPERATION METHOD | AUTOMATIC |
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