4820-00-880-0420 DISK,VALVE Index 4820-00-880-0422 VALVE,CHECK

National Stock Number:
4820-00-880-0421

Federal Supply Class:
4820

National Item Identification Number:
008800421

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.


Manufacturer Information:
5-664-886768TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC BUSINESS UNIT
576R360H0297942NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+40.0 TO 125.0 POUNDS PER SQUARE INCH
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLEFLARED (TUBE) ALL ENDS
DISK LOADING METHODSPRING
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICEPOPPET
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/2,ALLOY2014,T4 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-225/4,ALLOY 2014,T4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-367,COMP 2014,T4 FED SPEC 3RD MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2014 AND ALUMINUM ALLOY OVERALL
MAXIMUM OPERATING TEMP165.0 FAHRENHEIT SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS
NOMINAL THREAD SIZE0.437 INCHES ALL ENDS
OPENING PRESSURE SETTING90.0 POUNDS PER SQUARE INCH
SEAT ANGLE37.0 DEGREES ALL ENDS
STYLE DESIGNATORANGLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED
SURFACE TREATMENTANODIZE LOCATION NOT OTHERWISE SPECIFIED
THREAD CLASS3A ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD QUANTITY PER INCH20 ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS
VALVE OPERATION METHODAUTOMATIC


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