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21M-25 — COVER PLATE,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

21M-25: COVER PLATE,VALVE.

The COVER PLATE,VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: 4" WATER REGULATING VALVE, MARINE SERVICE, PRES ACTUATED, part_name_assigned_by_controlling_agency: PLATE, MANUAL FLUSH. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-599-2963, 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
21M-25
NSN: 4810-01-599-2963
FSC: 4810 — Valves, Powered
CAGE: 21013 — METREX VALVE CORP. DBA METREX VALVE CORP (USA)
SPECIFICATIONS
end_item_identification4" WATER REGULATING VALVE, MARINE SERVICE, PRES ACTUATED
part_name_assigned_by_controlling_agencyPLATE, MANUAL FLUSH
NSN4810-01-599-2963
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 21M-25 · 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYPLATE, MANUAL FLUSH
END ITEM IDENTIFICATION4" WATER REGULATING VALVE, MARINE SERVICE, PRES ACTUATED
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
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 21M-25?
21M-25 is a COVER PLATE,VALVE.
What is the NSN for 21M-25?
21M-25 is cataloged in the U.S. Government catalog under NSN 4810-01-599-2963. 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.