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88-21633 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

88-21633: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: RUBBER SEAT, connection_type: THREADED INTERNAL PIPE ALL ENDS, nominal_thread_size: 0.125 INCHES ALL ENDS IN, valve_operation_method: AUTOMATIC, thread_series_designator: NPT ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-367-1836, 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
88-21633
NSN: 4820-01-367-1836
FSC: 4820 — Valves, Nonpowered
CAGE: 30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)
SPECIFICATIONS
materialRUBBER SEAT
connection_typeTHREADED INTERNAL PIPE ALL ENDS
nominal_thread_size0.125 INCHES ALL ENDS IN
valve_operation_methodAUTOMATIC
thread_series_designatorNPT ALL ENDS
NSN4820-01-367-1836
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 88-21633 · 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 TYPE: THREADED INTERNAL PIPE ALL ENDS
•
NOMINAL THREAD SIZE: 0.125 INCHES ALL ENDS IN
•
MATERIAL: COPPER ALLOY BODY
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
NOMINAL THREAD SIZE0.125 INCHES ALL ENDS IN
MATERIALCOPPER ALLOY BODY
MATERIALRUBBER SEAT
THREAD SERIES DESIGNATORNPT ALL ENDS
VALVE OPERATION METHODAUTOMATIC
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 88-21633?
88-21633 is a VALVE,CHECK.
What is the NSN for 88-21633?
88-21633 is cataloged in the U.S. Government catalog under NSN 4820-01-367-1836. 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.