P21321 — VALVE,CHECK

✓ Government record, cited

— · GATE VALVE

PRODUCT OVERVIEW

P21321: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.062 INCHES NOMINAL IN, seat_angle: 37.0 DEGREES SECOND END, hole_diameter: 2.281 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL TUBE SECOND END, overall_diameter: 4.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-852-3719, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

P21321

NSN: 4820-00-852-3719
NIINs: 008523719, 013357661
FSC: 4820 — Valves, Nonpowered
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)

SPECIFICATIONS

material	STEEL OVERALL
thickness	0.062 INCHES NOMINAL IN
seat_angle	37.0 DEGREES SECOND END
hole_diameter	2.281 INCHES NOMINAL IN
connection_type	THREADED EXTERNAL TUBE SECOND END
overall_diameter	4.750 INCHES NOMINAL IN
style_designator	STRAIGHT THRU
thread_direction	RIGHT-HAND SECOND END
operating_pressure	3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_method	SPRING
nominal_thread_size	0.437 INCHES FIRST END IN
peripheral_shape_style	ROUND
NSN	4820-00-852-3719

COMPONENT DIAGRAM

KEY FEATURES

•

CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END

•

STYLE DESIGNATOR: STRAIGHT THRU

•

NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN

•

OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS

•

THREAD DIRECTION: RIGHT-HAND SECOND END

TECHNICAL CHARACTERISTICS

CONNECTION TYPE	THREADED EXTERNAL TUBE FIRST END
CONNECTION TYPE	THREADED EXTERNAL TUBE SECOND END
STYLE DESIGNATOR	STRAIGHT THRU
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.250 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.187 INCHES SECOND END IN
OPERATING PRESSURE	3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
THREAD DIRECTION	RIGHT-HAND SECOND END
THREAD DIRECTION	RIGHT-HAND FIRST END
NOMINAL THREAD SIZE	0.437 INCHES FIRST END IN
NOMINAL THREAD SIZE	0.375 INCHES SECOND END IN

SUBSTITUTES & CROSS-REFERENCES 2

C071-4-3Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

2351212-6Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

Ready to buy P21321?

Compare prices from verified sellers on eBay

Buy on eBay →

As an eBay Partner, PartsTable may earn a commission. Your price is not affected.

FREQUENTLY ASKED QUESTIONS

What is P21321?

P21321 is a VALVE,CHECK.

What parts can replace P21321?

There are 2 known substitutes for P21321: C071-4-3, 2351212-6. Substitute compatibility should be verified for your specific system.

What is the NSN for P21321?

P21321 is cataloged in the U.S. Government catalog under NSN 4820-00-852-3719. This indicates validated use in U.S. government and defense supply chains.

Community Feedback

P21321 — VALVE,CHECK

Request a Quote — P21321