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Technical Data Sheet
PartsTable / COMPONENT / D50FF-04-1/2 IN
D50FF-04-1/2 IN ✓ 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 D50FF-04-1/2 IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-191-8291, 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
D50FF-04-1/2 IN
NSN: 4820-01-191-8291
FSC: 4820
CAGE: 65079 — DANCO VALVE COMPANY (USA)
SPECIFICATIONS
Part NumberD50FF-04-1/2 IN
NSN4820-01-191-8291
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D50FF-04-1/2 IN · 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
•
VALVE OPERATION METHOD: AUTOMATIC
•
SECOND CONNECTION FACE TO CENTERLINE DISTANCE: 3.000 INCHES IN
•
NOMINAL THICKNESS: 0.375 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: ANGLE FLANGED ENDS
•
FIRST CONNECTION FACE TO CENTERLINE DISTANCE: 3.000 INCHES IN
•
VALVE SIZE: 0.500 INCHES IN
•
MATERIAL: NICKEL ALLOY STEM
•
ADJUSTABLE PRESSURE RANGE: +30.0 TO 34.0 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
SECOND CONNECTION FACE TO CENTERLINE DISTANCE3.000 INCHES IN
NOMINAL THICKNESS0.375 INCHES ALL ENDS IN
STYLE DESIGNATORANGLE FLANGED ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE3.000 INCHES IN
VALVE SIZE0.500 INCHES IN
MATERIALNICKEL ALLOY STEM
ADJUSTABLE PRESSURE RANGE+30.0 TO 34.0 POUNDS PER SQUARE INCH LBS
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SINGLE RESPONSE DEGF
BOLT HOLE QUANTITY3 ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
6501Interchangeable
interchangeable cross-reference
interchangeable
861740Interchangeable
interchangeable cross-reference
interchangeable
19-4Interchangeable
interchangeable cross-reference
interchangeable
9050-100-0000Interchangeable
interchangeable cross-reference
interchangeable
4-25168RInterchangeable
interchangeable cross-reference
interchangeable
9050-000-0000Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D50FF-04-1/2 IN?
D50FF-04-1/2 IN is a D50FF-04-1/2 IN.
What parts can replace D50FF-04-1/2 IN?
There are 18 known substitutes for D50FF-04-1/2 IN: 6501, 861740, 19-4 and 15 more. Substitute compatibility should be verified for your specific system.
Is D50FF-04-1/2 IN still available?
D50FF-04-1/2 IN 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