PartsTable
Technical Data Sheet
338863R91 ✓ 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: STEEL OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2B FIRST END, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: SWIVEL NUT, INVERTED FLARE(TUBE) 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 4820-00-847-5941, 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
338863R91
NSN: 4820-00-847-5941
FSC: 4820
CAGE: 0SAT8 — KOMATSU AMERICA CORP. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2B FIRST END
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_styleSWIVEL NUT, INVERTED FLARE(TUBE) FIRST END
style_designatorANGLE
thread_directionRIGHT-HAND SECOND END
flow_control_deviceBALL
nominal_thread_size0.625 INCHES FIRST END IN
valve_operation_methodAUTOMATIC
thread_series_designatorNPT SECOND END
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST END IN
NSN4820-00-847-5941
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 338863R91 · 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
FLOW CONTROL DEVICE: BALL
NOMINAL THREAD SIZE: 0.625 INCHES FIRST END IN
CONNECTION STYLE: SWIVEL NUT, INVERTED FLARE(TUBE) FIRST END
VALVE OPERATION METHOD: AUTOMATIC
SEAT ANGLE: 37.0 DEGREES FIRST END
THREAD CLASS: 2B FIRST END
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
FLOW CONTROL DEVICEBALL
NOMINAL THREAD SIZE0.625 INCHES FIRST END IN
CONNECTION STYLESWIVEL NUT, INVERTED FLARE(TUBE) FIRST END
VALVE OPERATION METHODAUTOMATIC
SEAT ANGLE37.0 DEGREES FIRST END
THREAD CLASS2B FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
A3249Interchangeable
interchangeable cross-reference
interchangeable
481-21Interchangeable
interchangeable cross-reference
interchangeable
16726Interchangeable
interchangeable cross-reference
interchangeable
609939Interchangeable
interchangeable cross-reference
interchangeable
P80515Interchangeable
interchangeable cross-reference
interchangeable
80515Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 338863R91?
338863R91 is a VALVE,SAFETY RELIEF.
What parts can replace 338863R91?
There are 7 known substitutes for 338863R91: A3249, 481-21, 16726 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 338863R91?
338863R91 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-847-5941. This indicates validated use in U.S. government and defense supply chains.
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