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PartsTable / COMPONENT / 301803R91
301803R91 ✓ 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

VALVE,DUAL SHUTOFF,TANK-MOUNTED. Key specifications include filter: NOT INCLUDED, material: STEEL BODY, body_style: ANGLE, regulation_type: MANUAL SINGLE STAGE, special_features: STEELCAD PLATE, flow_control_device: PISTON, TOP GUIDED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-026-8473, 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
301803R91
NSN: 4820-00-026-8473
FSC: 4820
CAGE: 25910 — HENNIG BROACH AND TOOL CO (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialSTEEL BODY
body_styleANGLE
regulation_typeMANUAL SINGLE STAGE
special_featuresSTEELCAD PLATE
flow_control_devicePISTON, TOP GUIDED
manual_control_methodTEE HANDLE
end_connection_quantity2
end_item_identification3805-00-280-7269
first_end_connection_typeTHREADED EXTERNAL TUBE
first_end_style_designatorFLARED
second_end_connection_typeUNTHREADED EXTERNAL HOSE
NSN4820-00-026-8473
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 301803R91 · 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 DIRECTION: RIGHT-HAND FIRST END
•
CONNECTION STYLE: BEADED (HOSE) SECOND END
•
THREAD SERIES DESIGNATOR: NPTF FIRST END
•
NOMINAL THREAD SIZE: 0.375 INCHES FIRST END IN
•
MATERIAL: COPPER ALLOY OVERALL
•
STYLE DESIGNATOR: ANGLE
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND FIRST END
CONNECTION STYLEBEADED (HOSE) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
THREAD SERIES DESIGNATORNPTF FIRST END
NOMINAL THREAD SIZE0.375 INCHES FIRST END IN
MATERIALCOPPER ALLOY OVERALL
SPECIAL FEATURESSUPPORTS GRUMMAN A-10 AIRCRAFT
STYLE DESIGNATORANGLE
VALVE OPERATION METHODMANUAL
FLOW CONTROL DEVICEDISK OR STEM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 35
A-A-59440/4Interchangeable
interchangeable cross-reference
interchangeable
AA59440/4-019Interchangeable
interchangeable cross-reference
interchangeable
MS35785-6Interchangeable
interchangeable cross-reference
interchangeable
109Interchangeable
interchangeable cross-reference
interchangeable
2065-16Interchangeable
interchangeable cross-reference
interchangeable
CT1087Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 301803R91?
301803R91 is a VALVE,DUAL SHUTOFF,TANK-MOUNTED.
What parts can replace 301803R91?
There are 35 known substitutes for 301803R91: A-A-59440/4, AA59440/4-019, MS35785-6 and 32 more. Substitute compatibility should be verified for your specific system.
Is 301803R91 still available?
301803R91 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