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Technical Data Sheet
PartsTable / COMPONENT / 20-F-1/2
20-F-1/2 ✓ 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 20-F-1/2 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 4820-00-541-4176, 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
20-F-1/2
NSN: 4820-00-541-4176
FSC: 4820
CAGE: 11198 — HEALEY PETER BRASS FOUNDRY INC (USA)
SPECIFICATIONS
Part Number20-F-1/2
NSN4820-00-541-4176
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20-F-1/2 · 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 SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: STRAIGHT THRU
•
VALVE OPERATION METHOD: MANUAL
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) ALL ENDS
•
NOMINAL THREAD SIZE: 0.500 INCHES ALL ENDS IN
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
VALVE OPERATION METHODMANUAL
THREAD DIRECTIONRIGHT-HAND ALL ENDS
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) ALL ENDS
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
MATERIALCOPPER ALLOY BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
20F12PG-24Interchangeable
interchangeable cross-reference
interchangeable
20F12Interchangeable
interchangeable cross-reference
interchangeable
700012Interchangeable
interchangeable cross-reference
interchangeable
RC20GF820KInterchangeable
interchangeable cross-reference
interchangeable
745-1306-000Interchangeable
interchangeable cross-reference
interchangeable
4171306-578Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-F-1/2?
20-F-1/2 is a 20-F-1/2.
What parts can replace 20-F-1/2?
There are 16 known substitutes for 20-F-1/2: 20F12PG-24, 20F12, 700012 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-F-1/2?
20-F-1/2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-541-4176. 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