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D50128 ✓ 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 VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: BRONZE BODY, valve_size: 3.000 INCHES IN, bonnet_type: INSIDE SPRING, flange_shape: ROUND WITH HOLES ALL ENDS, connection_type: UNTHREADED EXTERNAL HOSE FIRST END, style_designator: ANGLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-180-0849, 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
D50128
NSN: 4820-01-180-0849
FSC: 4820
CAGE: 34889 — HUNT VALVE COMPANY INC DBA UNION FLONETICS (USA)
SPECIFICATIONS
materialBRONZE BODY
valve_size3.000 INCHES IN
bonnet_typeINSIDE SPRING
flange_shapeROUND WITH HOLES ALL ENDS
connection_typeUNTHREADED EXTERNAL HOSE FIRST END
style_designatorANGLE
nominal_thickness0.500 INCHES ALL ENDS IN
bolt_hole_quantity8 ALL ENDS
flange_face_designPLAIN ALL ENDS
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
disk_loading_methodSPRING
flow_control_deviceDISK
NSN4820-01-180-0849
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D50128 · 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 19
D50128Interchangeable
interchangeable cross-reference
interchangeable
D50128 PART R10AL2L211Interchangeable
interchangeable cross-reference
interchangeable
B2022CInterchangeable
interchangeable cross-reference
interchangeable
D50FF-3-000 PART B2022-2CInterchangeable
interchangeable cross-reference
interchangeable
R10AK2K2AM-BM1Interchangeable
interchangeable cross-reference
interchangeable
R10AK2K2AMInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D50128?
D50128 is a VALVE,SAFETY RELIEF.
What parts can replace D50128?
There are 19 known substitutes for D50128: D50128, D50128 PART R10AL2L211, B2022C and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D50128?
D50128 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-180-0849. 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