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Technical Data Sheet
PartsTable / COMPONENT / D1831-1-1/2IN
D1831-1-1/2IN ✓ 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 D1831-1-1/2IN 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 4820-01-021-4618, 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
D1831-1-1/2IN
NSN: 4820-01-021-4618
FSC: 4820
CAGE: 17062 — P J VALVES INC (USA)
SPECIFICATIONS
Part NumberD1831-1-1/2IN
NSN4820-01-021-4618
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D1831-1-1/2IN · 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
•
NOMINAL THICKNESS: 1.250 INCHES ALL ENDS IN
•
BONNET ATTACHMENT METHOD: BOLTED
•
SECOND CONNECTION FACE TO CENTERLINE DISTANCE: 6.000 INCHES IN
•
RAISED FACE NOMINAL DIAMETER: 2.875 INCHES ALL ENDS IN
•
NONDEFINITIVE SPEC/STD DATA: VIII TYPE
•
OPERATING PRESSURE: 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SPECIFICATION/STANDARD DATA: 81349-DOD-V-24675 GOVERNMENT SPECIFICATION
•
STYLE DESIGNATOR: ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THICKNESS1.250 INCHES ALL ENDS IN
BONNET ATTACHMENT METHODBOLTED
SECOND CONNECTION FACE TO CENTERLINE DISTANCE6.000 INCHES IN
RAISED FACE NOMINAL DIAMETER2.875 INCHES ALL ENDS IN
NONDEFINITIVE SPEC/STD DATAVIII TYPE
OPERATING PRESSURE1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SPECIFICATION/STANDARD DATA81349-DOD-V-24675 GOVERNMENT SPECIFICATION
STYLE DESIGNATORANGLE
MATERIALNICKEL ALLOY STEM
FLANGE SHAPEROUND WITH HOLES ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
MILV17737 TYPEInterchangeable
interchangeable cross-reference
interchangeable
D1829-1 1-2IN GInterchangeable
interchangeable cross-reference
interchangeable
D1829-1 1-2INGLBSTP CHKInterchangeable
interchangeable cross-reference
interchangeable
1994MInterchangeable
interchangeable cross-reference
interchangeable
D1830-1 1-2INGLInterchangeable
interchangeable cross-reference
interchangeable
1994M 1 1/2INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D1831-1-1/2IN?
D1831-1-1/2IN is a D1831-1-1/2IN.
What parts can replace D1831-1-1/2IN?
There are 16 known substitutes for D1831-1-1/2IN: MILV17737 TYPE, D1829-1 1-2IN G, D1829-1 1-2INGLBSTP CHK and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D1831-1-1/2IN?
D1831-1-1/2IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-021-4618. 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