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Technical Data Sheet
PartsTable / COMPONENT / 1021-PS 1/2IN
1021-PS 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 1021-PS 1/2IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-350-9451, 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
1021-PS 1/2IN
NSN: 4820-00-350-9451
FSC: 4820
CAGE: 37239 — LUNKENHEIMER CO (USA)
SPECIFICATIONS
Part Number1021-PS 1/2IN
NSN4820-00-350-9451
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1021-PS 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
GGG-W-641Interchangeable
interchangeable cross-reference
interchangeable
962DInterchangeable
interchangeable cross-reference
interchangeable
B107.10Interchangeable
interchangeable cross-reference
interchangeable
302016Interchangeable
interchangeable cross-reference
interchangeable
A1805V152Interchangeable
interchangeable cross-reference
interchangeable
MS51911-48-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1021-PS 1/2IN?
1021-PS 1/2IN is a 1021-PS 1/2IN.
What parts can replace 1021-PS 1/2IN?
There are 22 known substitutes for 1021-PS 1/2IN: GGG-W-641, 962D, B107.10 and 19 more. Substitute compatibility should be verified for your specific system.
Is 1021-PS 1/2IN still available?
1021-PS 1/2IN is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026