PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 99S 3/8
99S 3/8 ✓ 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 99S 3/8 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 4820-01-450-8284, 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
99S 3/8
NSN: 4820-01-450-8284
FSC: 4820
CAGE: 14652 — UNITED BRASS WORKS, INC. DBA UNITED BRASS WORKS (USA)
SPECIFICATIONS
Part Number99S 3/8
NSN4820-01-450-8284
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 99S 3/8 · 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
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) ALL ENDS
•
MATERIAL: COPPER ALLOY BODY
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
VALVE OPERATION METHOD: AUTOMATIC
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
NOMINAL THREAD SIZE: 0.375 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND ALL ENDS
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
MATERIALCOPPER ALLOY BODY
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
VALVE OPERATION METHODAUTOMATIC
THREAD SERIES DESIGNATORNPT ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
NOMINAL THREAD SIZE0.375 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
500311Interchangeable
interchangeable cross-reference
interchangeable
JANR11Interchangeable
interchangeable cross-reference
interchangeable
6502-3137220PCSYMB0LR124Interchangeable
interchangeable cross-reference
interchangeable
5003-011Interchangeable
interchangeable cross-reference
interchangeable
9417744Interchangeable
interchangeable cross-reference
interchangeable
CAP 76AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 99S 3/8?
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 99S 3/8?
99S 3/8 is a 99S 3/8.
What parts can replace 99S 3/8?
There are 13 known substitutes for 99S 3/8: 500311, JANR11, 6502-3137220PCSYMB0LR124 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 99S 3/8?
99S 3/8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-450-8284. 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 — 99S 3/8

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