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Technical Data Sheet
PartsTable / COMPONENT / 05 1/2
05 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 05 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 4820-01-620-8009, 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
05 1/2
NSN: 4820-01-620-8009
FSC: 4820
CAGE: 79227 — WATTS REGULATOR COMPANY (USA)
SPECIFICATIONS
Part Number05 1/2
NSN4820-01-620-8009
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 05 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 SIZE AND SERIES/TYPE DESIGNATOR: 0.5 NPT FIRST END
•
MATERIAL: STEEL BODY
•
BODY STYLE: DROP-IN CARTRIDGE
•
MEDIA FOR WHICH DESIGNED: WATER
•
FIRST END CONNECTION TYPE: THREADED CARTRIDGE
•
VALVE LOADING METHOD: SPRING
•
OUTLET PRESSURE ACCURACY RATING: ERR-060
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.5 NPT FIRST END
MATERIALSTEEL BODY
BODY STYLEDROP-IN CARTRIDGE
MEDIA FOR WHICH DESIGNEDWATER
FIRST END CONNECTION TYPETHREADED CARTRIDGE
SPECIAL FEATURESITEM HAS AN AIR PRELOAD OF 60 PSI; OVERALL DIMS ARE 1.250 INCH DIA X 5.500 INCH LONG WITH 1/2 NPT ON ONE END IN
VALVE LOADING METHODSPRING
OUTLET PRESSURE ACCURACY RATINGERR-060
FILTERNOT INCLUDED
FLOW CONTROL DEVICEPOPPET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
AMP-12Interchangeable
interchangeable cross-reference
interchangeable
0512Interchangeable
interchangeable cross-reference
interchangeable
SEAGULL RP-FInterchangeable
interchangeable cross-reference
interchangeable
PERFECTIONInterchangeable
interchangeable cross-reference
interchangeable
PROFECTION ADVANCED FLOOR COATI-Interchangeable
interchangeable cross-reference
interchangeable
LF05 1/2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 05 1/2?
05 1/2 is a 05 1/2.
What parts can replace 05 1/2?
There are 6 known substitutes for 05 1/2: AMP-12, 0512, SEAGULL RP-F and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 05 1/2?
05 1/2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-620-8009. 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