Product Details | CHECK VALVE

4820-00-756-6557 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.

Part Alternates: B364, 4820-00-756-6557, 00-756-6557, 4820007566557, 007566557

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 31 MAR 1972 00-756-6557

Drawings & Photos | NSN 4820-00-756-6557


Cross Reference | NSN 4820-00-756-6557

Part Number Cage Code Manufacturer
B364 82666 STOCKHAM VALVES AND FITTINGS INC

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Technical Data | NSN 4820-00-756-6557

Characteristic Specifications
MATERIAL COPPER ALLOY BODY COPPER ALLOY FLOW CONTROL DEVICE COPPER ALLOY SEAT
MATERIAL DOCUMENT AND CLASSIFICATION QQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY QQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE QQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE SEAT
STYLE DESIGNATOR A2 STRAIGHT THRU
FLOW CONTROL DEVICE DISK
MEDIA FOR WHICH DESIGNED STEAM 1ST RESPONSE WATER-OIL-GAS 2ND RESPONSE
MAXIMUM OPERATING PRESSURE 300.0 POUNDS PER SQUARE INCH 1ST RESPONSE 1000.0 POUNDS PER SQUARE INCH 2ND RESPONSE
CONNECTION TYPE THREADED INTERNAL PIPE 1ST END
CONNECTION STYLE B9 PLAIN 1ST END
NOMINAL PIPE SIZE ACCOMMODATED 0.750 INCHES 1ST END
THREAD SERIES DESIGNATOR NPT 1ST END
NOMINAL THREAD SIZE 0.750 INCHES 1ST END
THREAD QUANTITY PER INCH 14 1ST END
THREAD DIRECTION RIGHT-HAND 1ST END
MOUNTING POSITION HORIZONTAL

Restrictions/Controls & Freight Information | NSN 4820-00-756-6557

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information