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29M-120A — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

29M-120A: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY R-405 OR NICKEL ALLOY 400 OVERALL, style_designator: THREADED FLANGED, seating_surface_shape: FLAT, end_item_identification: WATER REGULATING VALVE,PRESSURE ACTUATED, seal_accommodation_type: GROOVED, material_document_and_classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-426-3375, 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
29M-120A
NSN: 4820-01-426-3375
FSC: 4820 — Valves, Nonpowered
CAGE: 21013 — METREX VALVE CORP. DBA METREX VALVE CORP (USA)
SPECIFICATIONS
materialNICKEL ALLOY R-405 OR NICKEL ALLOY 400 OVERALL
style_designatorTHREADED FLANGED
seating_surface_shapeFLAT
end_item_identificationWATER REGULATING VALVE,PRESSURE ACTUATED
seal_accommodation_typeGROOVED
material_document_and_classificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4820-01-426-3375
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 29M-120A · 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
•
SEAL ACCOMMODATION TYPE: GROOVED
•
STYLE DESIGNATOR: THREADED FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: NICKEL ALLOY R-405 OR NICKEL ALLOY 400 OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
SEAL ACCOMMODATION TYPEGROOVED
STYLE DESIGNATORTHREADED FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
END ITEM IDENTIFICATIONWATER REGULATING VALVE,PRESSURE ACTUATED
MATERIALNICKEL ALLOY R-405 OR NICKEL ALLOY 400 OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 3
MM-3130B-11M-SReference document
Same NSN cross-reference
Reference document — Drawing number reference only
MM-3130B-11M-S ITEM 54Reference document
Same NSN cross-reference
Reference document — Secondary reference
EHOMM-3130-NF2 ITEM 14Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 29M-120A?
29M-120A is a SEAT,VALVE.
What parts can replace 29M-120A?
There are 3 known substitutes for 29M-120A: MM-3130B-11M-S, MM-3130B-11M-S ITEM 54, EHOMM-3130-NF2 ITEM 14. Substitute compatibility should be verified for your specific system.
What is the NSN for 29M-120A?
29M-120A is cataloged in the U.S. Government catalog under NSN 4820-01-426-3375. 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.