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Technical Data Sheet
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A6790.021.127 1-4IN — Technical Data Sheet

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— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The STEM,VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: SHIP OHIO CLASS SSN (TRIDENT); COMBAT SYSTEM SUPPORT EQUIPMENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4820-01-056-1669, 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
A6790.021.127 1-4IN
NSN: 4820-01-056-1669
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
end_item_identificationSHIP OHIO CLASS SSN (TRIDENT); COMBAT SYSTEM SUPPORT EQUIPMENT
NSN4820-01-056-1669
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A6790.021.127 1-4IN · 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
END ITEM IDENTIFICATIONSHIP OHIO CLASS SSN (TRIDENT); COMBAT SYSTEM SUPPORT EQUIPMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
MIL-V-20065InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
20257 FIND 11InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
06790021127InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
A6790.021.127InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
20202PC14InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8538 PC 50InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6790.021.127 1-4IN?
A6790.021.127 1-4IN is a STEM,VALVE.
What parts can replace A6790.021.127 1-4IN?
There are 8 known substitutes for A6790.021.127 1-4IN: MIL-V-20065, 20257 FIND 11, 06790021127 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6790.021.127 1-4IN?
A6790.021.127 1-4IN is cataloged in the Federal Logistics Information System under NSN 4820-01-056-1669. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026