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Technical Data Sheet
PartsTable / COMPONENT / 149-1/2IN
149-1/2IN ✓ 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 149-1/2IN 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 4820-00-068-1610, 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
149-1/2IN
NSN: 4820-00-068-1610
FSC: 4820
CAGE: 14915 — JAYCO INCORPORATED (USA)
SPECIFICATIONS
Part Number149-1/2IN
NSN4820-00-068-1610
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 149-1/2IN · 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: AUTOMATIC
•
DISK LOADING METHOD: SPRING
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
BONNET TYPE: INSIDE SPRING
•
FLOW CONTROL DEVICE: POPPET
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
•
NOMINAL THREAD SIZE: 0.750 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
DISK LOADING METHODSPRING
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) SECOND END
BONNET TYPEINSIDE SPRING
FLOW CONTROL DEVICEPOPPET
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
NOMINAL THREAD SIZE0.750 INCHES SECOND END IN
FEATURES PROVIDEDVALVE STEM LOCK SHIELD
THREAD SERIES DESIGNATORNPT ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
149/.50Interchangeable
interchangeable cross-reference
interchangeable
149-1/2INInterchangeable
interchangeable cross-reference
interchangeable
2550-1-2-15Interchangeable
Same NIIN cross-reference
interchangeable
149Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 149-1/2IN?
149-1/2IN is a 149-1/2IN.
What parts can replace 149-1/2IN?
There are 4 known substitutes for 149-1/2IN: 149/.50, 149-1/2IN, 2550-1-2-15 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 149-1/2IN?
149-1/2IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-068-1610. 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