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PartsTable / COMPONENT / 40737-2 PC NO 18
40737-2 PC NO 18 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include body_style: CYLINDRICAL BUSHING MOUNTED, head_style: FLAT COUNTERSUNK, body_length: 0.375 INCHES NOMINAL IN, shaft_style: ROUND, shaft_length: 1.500 INCHES NOMINAL IN, thread_class: 2A A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-508-4540, 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
40737-2 PC NO 18
NSN: 4820-01-508-4540
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
body_styleCYLINDRICAL BUSHING MOUNTED
head_styleFLAT COUNTERSUNK
body_length0.375 INCHES NOMINAL IN
shaft_styleROUND
shaft_length1.500 INCHES NOMINAL IN
thread_class2A A
actuator_typeSINGLE SHAFT
body_diameter0.875 INCHES NOMINAL IN
head_diameter0.660 INCHES MINIMUM AND 0.693 INCHES MAXIMUM IN
thread_length0.470 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
screw_materialSTEEL
shaft_diameter0.250 INCHES NOMINAL IN
NSN4820-01-508-4540
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40737-2 PC NO 18 · 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 20
188100Interchangeable
interchangeable cross-reference
interchangeable
1968396Interchangeable
interchangeable cross-reference
interchangeable
A42127Interchangeable
interchangeable cross-reference
interchangeable
281506-0001Interchangeable
interchangeable cross-reference
interchangeable
281506-0001 ITEInterchangeable
interchangeable cross-reference
interchangeable
1876-02Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40737-2 PC NO 18?
40737-2 PC NO 18 is a RESISTOR,VARIABLE,WIRE WOUND,PRE.
What parts can replace 40737-2 PC NO 18?
There are 20 known substitutes for 40737-2 PC NO 18: 188100, 1968396, A42127 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40737-2 PC NO 18?
40737-2 PC NO 18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-508-4540. 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