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Technical Data Sheet
PartsTable / COMPONENT / 84-4S 3/4X1-1/4-50
84-4S 3/4X1-1/4-50 ✓ 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 84-4S 3/4X1-1/4-50 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 4820-01-021-2757, 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
84-4S 3/4X1-1/4-50
NSN: 4820-01-021-2757
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
Part Number84-4S 3/4X1-1/4-50
NSN4820-01-021-2757
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 84-4S 3/4X1-1/4-50 · 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
•
DISK LOADING METHOD: SPRING
•
VALVE OPERATION METHOD: AUTOMATIC
•
RENEWABLE SEAT RING TYPE: THREADED
•
OPERATING PRESSURE: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
•
BONNET TYPE: INSIDE SPRING
•
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) SECOND END
•
MAXIMUM OPERATING TEMP: 300.0 FAHRENHEIT SECOND RESPONSE DEGF
TECHNICAL CHARACTERISTICS (FLIS)
DISK LOADING METHODSPRING
VALVE OPERATION METHODAUTOMATIC
RENEWABLE SEAT RING TYPETHREADED
OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
BONNET TYPEINSIDE SPRING
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) SECOND END
MAXIMUM OPERATING TEMP300.0 FAHRENHEIT SECOND RESPONSE DEGF
BONNET ATTACHMENT METHODTHREADED
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
D20721Interchangeable
interchangeable cross-reference
interchangeable
84SInterchangeable
interchangeable cross-reference
interchangeable
D20840Interchangeable
interchangeable cross-reference
interchangeable
K8416Interchangeable
interchangeable cross-reference
interchangeable
115Interchangeable
interchangeable cross-reference
interchangeable
84-S 3/4MX1-1/4F-50Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 84-4S 3/4X1-1/4-50?
84-4S 3/4X1-1/4-50 is a 84-4S 3/4X1-1/4-50.
What parts can replace 84-4S 3/4X1-1/4-50?
There are 6 known substitutes for 84-4S 3/4X1-1/4-50: D20721, 84S, D20840 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 84-4S 3/4X1-1/4-50?
84-4S 3/4X1-1/4-50 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-021-2757. 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