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PartsTable / COMPONENT / 40145-4 PG2 PC 43 PN 50164-20
40145-4 PG2 PC 43 PN 50164-20 ✓ 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

REGULATOR,THERMOSTATIC TEMPERATU. Key specifications include end_item_identification: IRS-ALR-46/49, reference_number_differentiating_characteristics: AS DIFFERENTIATED BY REPARABLE PARTS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-535-3651, 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
40145-4 PG2 PC 43 PN 50164-20
NSN: 4820-01-535-3651
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
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, 0.146 MIN/0.166 MAX IN HOLE DIAMETER
end_item_identificationIRS-ALR-46/49
reference_number_differentiating_characteristicsAS DIFFERENTIATED BY REPARABLE PARTS
NSN4820-01-535-3651
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40145-4 PG2 PC 43 PN 50164-20 · 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
401454Interchangeable
interchangeable cross-reference
interchangeable
420201Interchangeable
interchangeable cross-reference
interchangeable
6184597Interchangeable
interchangeable cross-reference
interchangeable
31W3132Interchangeable
interchangeable cross-reference
interchangeable
58744-90004Interchangeable
interchangeable cross-reference
interchangeable
40145-402Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40145-4 PG2 PC 43 PN 50164-20?
40145-4 PG2 PC 43 PN 50164-20 is a REGULATOR,THERMOSTATIC TEMPERATU.
What parts can replace 40145-4 PG2 PC 43 PN 50164-20?
There are 9 known substitutes for 40145-4 PG2 PC 43 PN 50164-20: 401454, 420201, 6184597 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40145-4 PG2 PC 43 PN 50164-20?
40145-4 PG2 PC 43 PN 50164-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-535-3651. 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