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Technical Data Sheet
PartsTable / COMPONENT / 140-429
140-429 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: SILICON CARBIDE ABRASIVE, special_features: SPIRAL PAPER SLEEVE FOR DRUM SANDER SIZE 2" ID X 9" WIDE, screen_grit_size_designator: 60. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-420-3145, 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
140-429
NSN: 4820-00-420-3145
FSC: 4820
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSILICON CARBIDE ABRASIVE
special_featuresSPIRAL PAPER SLEEVE FOR DRUM SANDER SIZE 2" ID X 9" WIDE
screen_grit_size_designator60
NSN4820-00-420-3145
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 140-429 · 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
•
BODY OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
SEATING SURFACE SHAPE: ANGULAR
•
MATERIAL: COPPER OVERALL
•
FLANGE DIAMETER: 1.250 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.344 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.625 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
SEATING SURFACE SHAPEANGULAR
MATERIALCOPPER OVERALL
FLANGE DIAMETER1.250 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.344 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.156 INCHES NOMINAL IN
SEAT ANGLE IN DEG30.000 NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
10947Interchangeable
interchangeable cross-reference
interchangeable
140-429Interchangeable
interchangeable cross-reference
interchangeable
60-2X9Interchangeable
interchangeable cross-reference
interchangeable
187940PC261Interchangeable
Same NIIN cross-reference
interchangeable
186942PC215Interchangeable
Same NIIN cross-reference
interchangeable
169720PC261Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 140-429?
140-429 is a SEAT,VALVE.
What parts can replace 140-429?
There are 13 known substitutes for 140-429: 10947, 140-429, 60-2X9 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 140-429?
140-429 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-420-3145. 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