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40145-803 ✓ 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: COPPER ALLOY, overall_length: 2.750 INCHES NOMINAL IN, end_item_identification: IRS-ALR 46/69, largest_outside_diameter: 0.750 INCHES NOMINAL IN, valve_size_for_which_designed: 2.000 INCHES IN, valve_type_for_which_designed: REGULATOR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-535-3661, 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
40145-803
NSN: 4820-01-535-3661
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
overall_length2.750 INCHES NOMINAL IN
supplementary_featuresO/A DIM 3.050 MIN/3.110 MAX IN LG; 2.490 MIN/2.550 MAX IN H; 0.580 MAX IN W; SMA FEMALE CONNECTOR 5 PLACES; 2 HOLES, 0.151 MIN/0.161 MAX IN HOLE DIAMETER
end_item_identificationIRS-ALR 46/69
largest_outside_diameter0.750 INCHES NOMINAL IN
valve_size_for_which_designed2.000 INCHES IN
valve_type_for_which_designedREGULATOR
reference_number_differentiating_characteristicsAS DIFFERENTIATED BY REPARABLE PARTS
NSN4820-01-535-3661
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40145-803 · 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 9
40145-8Interchangeable
interchangeable cross-reference
interchangeable
884924Interchangeable
interchangeable cross-reference
interchangeable
1A7073Interchangeable
interchangeable cross-reference
interchangeable
6247031Interchangeable
interchangeable cross-reference
interchangeable
A10-6164Interchangeable
interchangeable cross-reference
interchangeable
40175-01 FIND NO 9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40145-803?
40145-803 is a VALVE,REGULATING,TEMPERATURE.
What parts can replace 40145-803?
There are 9 known substitutes for 40145-803: 40145-8, 884924, 1A7073 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40145-803?
40145-803 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-535-3661. 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