PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 3,305,277
3,305,277 ✓ Verified by PartsTable
— · 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 3,305,277 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-128-2257, 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
3,305,277
NSN: 4820-01-128-2257
FSC: 4820
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number3,305,277
NSN4820-01-128-2257
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3,305,277 · 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
•
DISK LOADING METHOD: SPRING
•
ADJUSTABLE PRESSURE RANGE: +25.0 TO 29.0 POUNDS PER SQUARE INCH LBS
•
CONNECTION STYLE: SOCKET WITH BRAZING RING (TUBE) ALL ENDS
•
MEDIA FOR WHICH DESIGNED: AIR FIRST RESPONSE
•
BONNET ATTACHMENT METHOD: BOLTED
•
MATERIAL: COPPER ALLOY SEAT
TECHNICAL CHARACTERISTICS (FLIS)
DISK LOADING METHODSPRING
ADJUSTABLE PRESSURE RANGE+25.0 TO 29.0 POUNDS PER SQUARE INCH LBS
CONNECTION STYLESOCKET WITH BRAZING RING (TUBE) ALL ENDS
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
BONNET ATTACHMENT METHODBOLTED
MATERIALCOPPER ALLOY SEAT
MATERIALCOPPER ALLOY FLOW CONTROL DEVICE
MATERIALCOPPER ALLOY BODY
MATERIALCOPPER ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY DR/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
3305277Interchangeable
interchangeable cross-reference
interchangeable
3306055Interchangeable
interchangeable cross-reference
interchangeable
5170041Interchangeable
interchangeable cross-reference
interchangeable
22520Interchangeable
interchangeable cross-reference
interchangeable
V134Interchangeable
interchangeable cross-reference
interchangeable
N-21067-K8205Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3,305,277?
3,305,277 is a 3,305,277.
What parts can replace 3,305,277?
There are 17 known substitutes for 3,305,277: 3305277, 3306055, 5170041 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3,305,277?
3,305,277 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-128-2257. 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: July 2026