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71553-79X6 — RETAINER,GASKET,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

71553-79X6: RETAINER,GASKET,VALVE.

The RETAINER,GASKET,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, overall_length: 3.000 INCHES NOMINAL IN, style_designator: ROUND, EXTERNAL THREAD, INVERTED FLARE, largest_inside_diameter: 2.000 INCHES NOMINAL IN, major_unthreaded_outside_diameter: 4.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-212-7633, 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
71553-79X6
NSN: 4820-01-212-7633
NIINs: 012127633, 012134753, 012139603, 012147188
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialCOPPER ALLOY
overall_length3.000 INCHES NOMINAL IN
style_designatorROUND, EXTERNAL THREAD, INVERTED FLARE
largest_inside_diameter2.000 INCHES NOMINAL IN
major_unthreaded_outside_diameter4.500 INCHES NOMINAL IN
general_characteristics_item_descriptionNICKEL COPPER ALLOY QQ-N-281 CLASS HR;OD 26.000 IN. NOMINAL;OUTER LIMIT OF PERFORATED AREA 23.500 IN. DIA;INTER LIMIT OF PERFORATED AREA 1.875 IN. IN
NSN4820-01-212-7633
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 71553-79X6 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ROUND SHAPE;26.000 IN. OD;THREE BOLT HOLES 1.562 IN. DIA EQUALLY SPACED ON 15.875 IN. DIA BOLT CIRCLE;THREE HOLES EQUALLY SPACED ON 5.000 IN. DIA;TWENTY HOLES 1.218 IN. DIA LOCATED ON 24.500 IN. DIA BOLT CIRCLE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONROUND SHAPE;26.000 IN. OD;THREE BOLT HOLES 1.562 IN. DIA EQUALLY SPACED ON 15.875 IN. DIA BOLT CIRCLE;THREE HOLES EQUALLY SPACED ON 5.000 IN. DIA;TWENTY HOLES 1.218 IN. DIA LOCATED ON 24.500 IN. DIA BOLT CIRCLE IN
SUBSTITUTES & CROSS-REFERENCES 2
SSN671-515-2047294Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
SSN671-515-2047294 PIECE 14Same 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 71553-79X6?
71553-79X6 is a RETAINER,GASKET,VALVE.
What parts can replace 71553-79X6?
There are 2 known substitutes for 71553-79X6: SSN671-515-2047294, SSN671-515-2047294 PIECE 14. Substitute compatibility should be verified for your specific system.
What is the NSN for 71553-79X6?
71553-79X6 is cataloged in the U.S. Government catalog under NSN 4820-01-212-7633. 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.