Product Details | SAFETY RELIEF VALVE

4820-01-329-5550 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.

Part Alternates: B8CPA23, B-8CPA2-3, 4820-01-329-5550, 01-329-5550, 4820013295550, 013295550

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 19 NOV 1990 01-329-5550

Drawings & Photos | NSN 4820-01-329-5550


Cross Reference | NSN 4820-01-329-5550

Part Number Cage Code Manufacturer
B-8CPA2-3 02570 SWAGELOK COMPANY DBA USE CAGE CODE 3T9T9 FOR
B-8CPA2-3 18034 NUPRO CO

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Technical Data | NSN 4820-01-329-5550

Characteristic Specifications
MATERIAL COPPER ALLOY BODY
STYLE DESIGNATOR C8 STRAIGHT THRU
FLOW CONTROL DEVICE POPPET
MAXIMUM OPERATING PRESSURE 2500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP 400.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD AUTOMATIC
CONNECTION TYPE THREADED EXTERNAL PIPE ALL ENDS
CONNECTION STYLE G46B PLAIN ALL ENDS
THREAD SERIES DESIGNATOR NPT ALL ENDS
NOMINAL THREAD SIZE 0.500 INCHES ALL ENDS
THREAD DIRECTION RIGHT-HAND ALL ENDS
BONNET TYPE INSIDE SPRING
BONNET ATTACHMENT METHOD INTEGRAL
DISK LOADING METHOD SPRING
ADJUSTABLE PRESSURE RANGE 3.0 TO 50.0 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 4820-01-329-5550

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