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PartsTable / COMPONENT / 40478-1 PIECE 17
40478-1 PIECE 17 ✓ 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 DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include special_features: PART OF REGULATOR ASSY,SERIES 3616; PLUS AND MINUS 15 V V, features_provided: ELECTROSTATIC SENSITIVE, criticality_code_justification: CBBL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-233-4946, 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
40478-1 PIECE 17
NSN: 4820-01-233-4946
FSC: 4820
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
special_featuresPART OF REGULATOR ASSY,SERIES 3616; PLUS AND MINUS 15 V V
features_providedELECTROSTATIC SENSITIVE
end_item_identificationSURVEILLANCE AND WARNING SYSTEM; SURVEILLANCE AND WARNING PROJECTS; GROUND IDENTIFICATION AND RECOGNITION EQUIPMENT (COMMON) 441A RADAR SYSTEM (AN/FPS/95), WEST PAC NOTH (WPN) COMPATABILITY SYSTEM A
criticality_code_justificationCBBL
NSN4820-01-233-4946
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40478-1 PIECE 17 · 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 2
65702Interchangeable
interchangeable cross-reference
interchangeable
101568Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40478-1 PIECE 17?
40478-1 PIECE 17 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 40478-1 PIECE 17?
There are 2 known substitutes for 40478-1 PIECE 17: 65702, 101568. Substitute compatibility should be verified for your specific system.
What is the NSN for 40478-1 PIECE 17?
40478-1 PIECE 17 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-233-4946. 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