PartsTable
Technical Data Sheet
1021A137 ✓ 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 COCK,SHUTOFF,SCREW STEM is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_angle: 45.0 DEGREES SECOND END, thread_class: 2A SECOND END A, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: FLARED (TUBE) SECOND END, special_features: WEAPON SYSTEM ESSENTIAL; BODY STYLE: STRAIGHT THROUGH. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-595-3191, 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
1021A137
NSN: 4820-00-595-3191
FSC: 4820
CAGE: 10137 — SZEMCO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_angle45.0 DEGREES SECOND END
thread_class2A SECOND END A
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_styleFLARED (TUBE) SECOND END
special_featuresWEAPON SYSTEM ESSENTIAL; BODY STYLE: STRAIGHT THROUGH
thread_directionRIGHT-HAND SECOND END
flow_control_deviceDISK
nominal_thread_size0.125 INCHES FIRST END IN
valve_operation_methodMANUAL
end_item_identificationFIREFINDER (AN/TPQ-36) RADAR SET. SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE). 200KW/ MEP009A DIESEL GENERATOR SET. 10KW, 60HZ, SKID-MOUNTED (2ID)(MEP0003A.
thread_quantity_per_inch20 SECOND END
NSN4820-00-595-3191
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 1021A137 · 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: MANUAL
THREAD CLASS: 2A SECOND END A
NOMINAL THREAD SIZE: 0.125 INCHES FIRST END IN
THREAD DIRECTION: RIGHT-HAND SECOND END
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
THREAD SERIES DESIGNATOR: UNF SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.313 INCHES SECOND END IN
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODMANUAL
THREAD CLASS2A SECOND END A
NOMINAL THREAD SIZE0.125 INCHES FIRST END IN
THREAD DIRECTIONRIGHT-HAND SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
THREAD SERIES DESIGNATORUNF SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.313 INCHES SECOND END IN
MATERIALCOPPER ALLOY OVERALL
CRITICALITY CODE JUSTIFICATIONFEAT
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
43812Interchangeable
interchangeable cross-reference
interchangeable
37892Interchangeable
interchangeable cross-reference
interchangeable
704059Interchangeable
interchangeable cross-reference
interchangeable
250820Interchangeable
interchangeable cross-reference
interchangeable
SKF5210AInterchangeable
interchangeable cross-reference
interchangeable
5210RHInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1021A137?
1021A137 is a COCK,SHUTOFF,SCREW STEM.
What parts can replace 1021A137?
There are 28 known substitutes for 1021A137: 43812, 37892, 704059 and 25 more. Substitute compatibility should be verified for your specific system.
Is 1021A137 still available?
1021A137 is currently cancelled.
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