4820-01-283-1818 VALVE,CHECK Index 4820-01-283-1820 VALVE,CHECK

National Stock Number:
4820-01-283-1819

Federal Supply Class:
4820

National Item Identification Number:
012831819

Description:
VALVE,VENT-CHECK

Detail:
A DUAL PURPOSE MARINE VALVE USED PRIMARILY WITH SHIPBOARD CARGO TANKS AND BULKHEADS. IT ACTS BOTH AS A VENT VALVE, TO RELIEVE VACUUM AND PRESSURE, AND A CHECK VALVE, TO PREVENT CARGO CONTAMINATION. IT IS EQUIPPED WITH AN INTERNAL FLAME SCREEN AND/OR A PROTECTIVE MESH AND MAY INCLUDE A HINGED COVER.


Manufacturer Information:
1750F 2-1/2IN BRZ79128ROBERT H WAGER CO INC
1750F 2.5IN BRZ79128ROBERT H WAGER CO INC
2.5-PM1-B-F-C32142HYDRASEARCH COMPANY, LLC
1750FB-2.50IN79128ROBERT H WAGER CO INC
2.5-1750FB BRZ COPPER FLT SS SCR79128ROBERT H WAGER CO INC


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER5.500 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.750 INCHES FIRST END
BOLT HOLE QUANTITY4 FIRST END
CONNECTION TYPEFLANGE FIRST END
FLANGE FACE DESIGNPLAIN FIRST END
FLANGE SHAPEROUND WITH HOLES FIRST END
FLOW CONTROL DEVICEBALL
MATERIALCOPPER ALLOY BODY
MATERIALCOPPER FLOW CONTROL DEVICE
MEDIA FOR WHICH DESIGNEDWATER, SALT SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL OUTSIDE DIAMETER7.000 INCHES FIRST END
NOMINAL THICKNESS0.562 INCHES FIRST END
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS


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