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28EF — COCK,PLUG

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

28EF: COCK,PLUG.

The COCK,PLUG is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_style: TWO WAY TWO PORT 90 DEGREE PLUG TURN, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: COMPRESSION (TUBE) ALL ENDS, thread_direction: RIGHT-HAND ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-272-3361, 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
28EF
NSN: 4820-00-272-3361
FSC: 4820 — Valves, Nonpowered
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_styleTWO WAY TWO PORT 90 DEGREE PLUG TURN
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleCOMPRESSION (TUBE) ALL ENDS
thread_directionRIGHT-HAND ALL ENDS
features_providedNONADJUSTABLE ROTATION
nominal_thread_size0.438 INCHES ALL ENDS IN
seat_nominal_radius0.062 INCHES ALL ENDS IN
valve_operation_methodMANUAL
thread_quantity_per_inch24 FIRST END
thread_series_designatorUNS ALL ENDS
NSN4820-00-272-3361
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 28EF · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONNECTION STYLE: COMPRESSION (TUBE) ALL ENDS
•
SEAT NOMINAL RADIUS: 0.062 INCHES ALL ENDS IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
FLOW STYLE: TWO WAY TWO PORT 90 DEGREE PLUG TURN
•
FEATURES PROVIDED: NONADJUSTABLE ROTATION
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
•
THREAD CLASS: 3A ALL ENDS A
TECHNICAL CHARACTERISTICS
CONNECTION STYLECOMPRESSION (TUBE) ALL ENDS
SEAT NOMINAL RADIUS0.062 INCHES ALL ENDS IN
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
FLOW STYLETWO WAY TWO PORT 90 DEGREE PLUG TURN
FEATURES PROVIDEDNONADJUSTABLE ROTATION
THREAD DIRECTIONRIGHT-HAND ALL ENDS
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
THREAD CLASS3A ALL ENDS A
THREAD QUANTITY PER INCH24 FIRST END
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
28EFSHUT0FFC0CKReference document
Same NSN cross-reference
Reference document — Secondary reference
A6769Reference document
Same NSN cross-reference
Reference document — Secondary reference
PTA6769Same 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
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FREQUENTLY ASKED QUESTIONS
What is 28EF?
28EF is a COCK,PLUG.
What parts can replace 28EF?
There are 3 known substitutes for 28EF: 28EFSHUT0FFC0CK, A6769, PTA6769. Substitute compatibility should be verified for your specific system.
What is the NSN for 28EF?
28EF is cataloged in the U.S. Government catalog under NSN 4820-00-272-3361. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.