PartsTable
Technical Data Sheet
Download PDF

M21F1021226-2 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

M21F1021226-2: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL SEAT, special_features: CARBON STEEL; HARDFACED TO MIL-R-17131 TYPE MIL-R-COCRA; SEALWELDED, style_designator: PLAIN FLANGED, end_item_identification: W/S TH, STRATEGIC SEALIFT CONVERSION SHIPS CLASS; FOR 2-1/2" NPS CLASS 150 CAST STEEL GLOBE VALVE, material_document_and_classification: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE SEAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-433-5395, 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
M21F1021226-2
NSN: 4820-01-433-5395
FSC: 4820 — Valves, Nonpowered
CAGE: 61661 — NEWMANS INC NEW JERSEY DIV (USA)
SPECIFICATIONS
materialSTEEL SEAT
special_featuresCARBON STEEL; HARDFACED TO MIL-R-17131 TYPE MIL-R-COCRA; SEALWELDED
style_designatorPLAIN FLANGED
end_item_identificationW/S TH, STRATEGIC SEALIFT CONVERSION SHIPS CLASS; FOR 2-1/2" NPS CLASS 150 CAST STEEL GLOBE VALVE
material_document_and_classificationASTM A105 ASSN STD SINGLE MATERIAL RESPONSE SEAT
NSN4820-01-433-5395
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: M21F1021226-2 · 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
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE SEAT
•
MATERIAL: STEEL SEAT
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORPLAIN FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A105 ASSN STD SINGLE MATERIAL RESPONSE SEAT
SPECIAL FEATURESCARBON STEEL; HARDFACED TO MIL-R-17131 TYPE MIL-R-COCRA; SEALWELDED
END ITEM IDENTIFICATIONW/S TH, STRATEGIC SEALIFT CONVERSION SHIPS CLASS; FOR 2-1/2" NPS CLASS 150 CAST STEEL GLOBE VALVE
MATERIALSTEEL SEAT
SUBSTITUTES & CROSS-REFERENCES 2
M21F1021226 ITEM 2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
M21F1021226 (70)Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy M21F1021226-2?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is M21F1021226-2?
M21F1021226-2 is a SEAT,VALVE.
What parts can replace M21F1021226-2?
There are 2 known substitutes for M21F1021226-2: M21F1021226 ITEM 2, M21F1021226 (70). Substitute compatibility should be verified for your specific system.
What is the NSN for M21F1021226-2?
M21F1021226-2 is cataloged in the U.S. Government catalog under NSN 4820-01-433-5395. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — M21F1021226-2

✓ 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.