PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1291 PIECE 4 3.0IN
1291 PIECE 4 3.0IN ✓ 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 1291 PIECE 4 3.0IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-386-4539, 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
1291 PIECE 4 3.0IN
NSN: 4820-01-386-4539
FSC: 4820
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
Part Number1291 PIECE 4 3.0IN
NSN4820-01-386-4539
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1291 PIECE 4 3.0IN · 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: SWING CHECK
•
MEDIA FOR WHICH DESIGNED: STEAM OR WATER OR OIL
•
MATERIAL: COPPER ALLOY 922
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSWING CHECK
MEDIA FOR WHICH DESIGNEDSTEAM OR WATER OR OIL
END ITEM IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS3
MATERIALCOPPER ALLOY 922
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
8062572Interchangeable
interchangeable cross-reference
interchangeable
3871LInterchangeable
interchangeable cross-reference
interchangeable
3871-L-160Interchangeable
interchangeable cross-reference
interchangeable
1011-323Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 1291 PIECE 4 3.0IN?
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 1291 PIECE 4 3.0IN?
1291 PIECE 4 3.0IN is a 1291 PIECE 4 3.0IN.
What parts can replace 1291 PIECE 4 3.0IN?
There are 4 known substitutes for 1291 PIECE 4 3.0IN: 8062572, 3871L, 3871-L-160 and 1 more. Substitute compatibility should be verified for your specific system.
Is 1291 PIECE 4 3.0IN still available?
1291 PIECE 4 3.0IN is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1291 PIECE 4 3.0IN

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026