PartsTable
Technical Data Sheet
40103-902 ✓ 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,REGULATING,TEMPERATURE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY SEAT, body_style: STRAIGHT THRU, flow_control_device: DOUBLE SEATED, two-way_valve_action: REVERSE ACTING, first_end_connection_type: UNTHREADED INTERNAL PIPE, first_end_style_designator: SOCKET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-319-2758, 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
40103-902
NSN: 4820-01-319-2758
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
body_styleSTRAIGHT THRU
flow_control_deviceDOUBLE SEATED
two-way_valve_actionREVERSE ACTING
end_connection_quantity2
first_end_connection_typeUNTHREADED INTERNAL PIPE
first_end_style_designatorSOCKET
material_document_and_classificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
second_end_relationship_with_first_endIDENTICAL
first_end_nominal_pipe_size_accommodated1.250 INCHES IN
NSN4820-01-319-2758
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 40103-902 · 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
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL: NICKEL ALLOY STEM
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALNICKEL ALLOY FLOW CONTROL DEVICE
MATERIALCOPPER ALLOY 922 BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIALNICKEL ALLOY SEAT
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST END CONNECTION TYPEUNTHREADED INTERNAL PIPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
SMN100WAInterchangeable
interchangeable cross-reference
interchangeable
4010-3Interchangeable
interchangeable cross-reference
interchangeable
SMN100KAInterchangeable
interchangeable cross-reference
interchangeable
9430273Interchangeable
interchangeable cross-reference
interchangeable
PD1202Interchangeable
interchangeable cross-reference
interchangeable
R64000-24Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40103-902?
40103-902 is a VALVE,REGULATING,TEMPERATURE.
What parts can replace 40103-902?
There are 18 known substitutes for 40103-902: SMN100WA, 4010-3, SMN100KA and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40103-902?
40103-902 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-319-2758. This indicates validated use in U.S. government and defense supply chains.
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