4820-00-287-4259 VALVE,ANGLE Index 4820-00-287-4267 COCK,DRAIN

National Stock Number:
4820-00-287-4264

Federal Supply Class:
4820

National Item Identification Number:
002874264

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:
2076-16PCV78096169ELECTRIC BOAT CORPORATION
214-4900-799254PCV78053711NAVAL SEA SYSTEMS COMMAND
271-4900-957265PCV78053711NAVAL SEA SYSTEMS COMMAND
271-4900-957265PCV78080064NAVAL SHIP SYSTEMS COMMAND
214-4900-799254PCV78080064NAVAL SHIP SYSTEMS COMMAND
2476-16PCV78296169ELECTRIC BOAT CORPORATION
319-4900-1188487PCV90453711NAVAL SEA SYSTEMS COMMAND
346-4900-484711PCV78253711NAVAL SEA SYSTEMS COMMAND
346-4900-484711PCV78280064NAVAL SHIP SYSTEMS COMMAND
319-4900-1188487PCV90480064NAVAL SHIP SYSTEMS COMMAND
340-4900-1000937PVC580064NAVAL SHIP SYSTEMS COMMAND
2776-23PCV78296169ELECTRIC BOAT CORPORATION
3376-12PCV90496169ELECTRIC BOAT CORPORATION
3664-33PCV396169ELECTRIC BOAT CORPORATION
44-1-2-176-25037239LUNKENHEIMER CO
533115PCV78253711NAVAL SEA SYSTEMS COMMAND
389588PCV78053711NAVAL SEA SYSTEMS COMMAND
571-3801-1302581PCV353711NAVAL SEA SYSTEMS COMMAND
571-3801-1302581PCV380064NAVAL SHIP SYSTEMS COMMAND
389588PCV78080064NAVAL SHIP SYSTEMS COMMAND
533115PCV78280064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BONNET ATTACHMENT METHODTHREADED
BONNET TYPEEXPOSED SPRING
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
DISK LOADING METHODSPRING
FEATURES PROVIDEDVALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICEPOPPET
OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALCOPPER ALLOY BODY
MATERIALNICKEL ALLOY FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY SEAT
MAXIMUM OPERATING TEMP550.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES SECOND END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES FIRST END
NOMINAL THREAD SIZE0.500 INCHES FIRST END
NOMINAL THREAD SIZE0.500 INCHES SECOND END
OPENING PRESSURE SETTING250.0 POUNDS PER SQUARE INCH
RENEWABLE SEAT RING TYPERETAINING SCREW
VALVE OPERATION METHODAUTOMATIC OR MANUAL
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD SERIES DESIGNATORNPT FIRST END
THREAD SERIES DESIGNATORNPT SECOND END


Click here to Register for Free 30-day Trial

© 2026 NSN-Now. All rights reserved.    Privacy Policy  |  Contact Us