4820-00-138-3897 VALVE,SAFETY RELIEF Index 4820-00-138-3899 VALVE,ANGLE

National Stock Number:
4820-00-138-3898

Federal Supply Class:
4820

National Item Identification Number:
001383898

Description:
VALVE,CHECK

Detail:
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.


Manufacturer Information:
869A3T4T791816CIRCOR AEROSPACE, INC.
C6217A3M4M781755LOCKHEED MARTIN CORPORATION


Techincal Specification:
MATERIALALUMINUM ALLOY 2024 BODY
RUBBER SYNTHETIC AND
STEEL COMP 304 FLOW CONTROL DEVICE
ALUMINUM ALLOY 2024 SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY
FED-STD-66, AISI 304/SAE 30304 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
QQ-A-250/4,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE SEAT
STYLE DESIGNATORSTRAIGHT THRU
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
NITROGEN, GASEOUS 2ND RESPONSE
MAXIMUM OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP180.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLEFLARED (TUBE) ALL ENDS
SEAT ANGLE37.0 DEGREES ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS
NOMINAL THREAD SIZE0.375 INCHES ALL ENDS
THREAD CLASS3A ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
MOUNTING POSITIONHORIZONTAL OR
VERTICAL
DISK LOADING METHODSPRING
THE MANUFACTURERS DATA
MANUFACTURERS CODE91816
DESIGN CONTROL REFERENCE869A3T4T7


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