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4021-SR — VALVE,BUTTERFLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

4021-SR: VALVE,BUTTERFLY.

The VALVE,BUTTERFLY is a the manufacturer industrial component. Key specifications include valve_operation_method: AIR, end_item_identification: FUEL SERVICE TRUCK, 5000 GALLON, MODEL NO. A/S32R-11.

This part is cataloged in the U.S. Government catalog under NSN 4810-01-431-4389, 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
4021-SR
NSN: 4810-01-431-4389
FSC: 4810 — Valves, Powered
CAGE: 79154 — VICTAULIC COMPANY OF AMERICA INC DBA VICTAULIC COMPANY OF AMERICA (USA)
SPECIFICATIONS
valve_operation_methodAIR
end_item_identificationFUEL SERVICE TRUCK, 5000 GALLON, MODEL NO. A/S32R-11
NSN4810-01-431-4389
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 4021-SR · 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
•
VALVE OPERATION METHOD: AIR
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONFUEL SERVICE TRUCK, 5000 GALLON, MODEL NO. A/S32R-11
VALVE OPERATION METHODAIR
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 2
RCS4021SRReference document
Same NSN cross-reference
Reference document — Secondary reference
V020700XM4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4021-SR?
4021-SR is a VALVE,BUTTERFLY.
What parts can replace 4021-SR?
There are 2 known substitutes for 4021-SR: RCS4021SR, V020700XM4. Substitute compatibility should be verified for your specific system.
What is the NSN for 4021-SR?
4021-SR is cataloged in the U.S. Government catalog under NSN 4810-01-431-4389. 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.