PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 3.0-51-21
3.0-51-21 ✓ 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 3.0-51-21 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 4820-01-275-9060, 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
3.0-51-21
NSN: 4820-01-275-9060
FSC: 4820
CAGE: 76588 — CORE INDUSTRIES INC. DBA MUELLER STEAM SPECIALTY (USA)
SPECIFICATIONS
Part Number3.0-51-21
NSN4820-01-275-9060
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 3.0-51-21 · 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
•
MATERIAL: STEEL COMP 316
•
LARGEST OUTSIDE DIAMETER: 0.619 INCHES NOMINAL IN
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 316
OVERALL LENGTH2.940 INCHES NOMINAL IN
LARGEST OUTSIDE DIAMETER0.619 INCHES NOMINAL IN
STEM ACTUATING END TYPETHREADED EXTERNALLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
305121Interchangeable
interchangeable cross-reference
interchangeable
TW-66008Interchangeable
interchangeable cross-reference
interchangeable
2285225Interchangeable
interchangeable cross-reference
interchangeable
52-IN13-1 3INInterchangeable
interchangeable cross-reference
interchangeable
BN-2.0/12-52-L10 3INInterchangeable
interchangeable cross-reference
interchangeable
BN2.0/12-52-L10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 3.0-51-21?
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 3.0-51-21?
3.0-51-21 is a 3.0-51-21.
What parts can replace 3.0-51-21?
There are 15 known substitutes for 3.0-51-21: 305121, TW-66008, 2285225 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3.0-51-21?
3.0-51-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-275-9060. This indicates validated use in U.S. government and defense supply chains.
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 — 3.0-51-21

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