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PartsTable / COMPONENT / 103904-1
103904-1 ✓ 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,START NOZZLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_width: 1.600 INCHES MAXIMUM IN, body_height: 0.780 INCHES MAXIMUM IN, body_length: 2.000 INCHES MAXIMUM IN, body_material: METAL, turn_quantity: 66 SINGLE COMPONENT SINGLE WINDING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-476-0402, 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
103904-1
NSN: 4820-00-476-0402
FSC: 4820
CAGE: 55820 — RTX CORPORATION DIV PRATT & WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width1.600 INCHES MAXIMUM IN
body_height0.780 INCHES MAXIMUM IN
body_length2.000 INCHES MAXIMUM IN
body_materialMETAL
turn_quantity66 SINGLE COMPONENT SINGLE WINDING
coil_form_typeHOLLOW SINGLE COMPONENT
inclosure_typeENCASED
overall_height1.030 INCHES MAXIMUM IN
overall_length0.312 INCHES NOMINAL IN
first_end_styleOVAL
mounting_methodTERMINAL SINGLE GROUP
NSN4820-00-476-0402
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 103904-1 · 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 5
2-659Interchangeable
interchangeable cross-reference
interchangeable
HL18851PC80Interchangeable
interchangeable cross-reference
interchangeable
5335Interchangeable
interchangeable cross-reference
interchangeable
A1/8X 5/16Interchangeable
interchangeable cross-reference
interchangeable
2659-102Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 103904-1?
103904-1 is a VALVE,START NOZZLE.
What parts can replace 103904-1?
There are 5 known substitutes for 103904-1: 2-659, HL18851PC80, 5335 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 103904-1?
103904-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-476-0402. 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