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N38903 ✓ 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

CAPACITOR,FIXED,PLASTIC DIELECTR. Key specifications include flange_diameter: 1.800 INCHES NOMINAL IN, hardness_rating: 400.0 BRINELL STANDARD NOMINAL OVERALL, style_designator: FAUCET, seat_angle_in_deg: 90.000 NOMINAL, under_flange_height: 0.437 INCHES NOMINAL IN, body_inside_diameter: 0.937 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-924-0533, 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
N38903
NSN: 4820-00-924-0533
FSC: 4820
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
flange_diameter1.800 INCHES NOMINAL IN
hardness_rating400.0 BRINELL STANDARD NOMINAL OVERALL
style_designatorFAUCET
seat_angle_in_deg90.000 NOMINAL
under_flange_height0.437 INCHES NOMINAL IN
body_inside_diameter0.937 INCHES NOMINAL IN
body_outside_diameter1.310 INCHES MINIMUM AND 1.311 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
flange_seat_to_disk_end_height0.563 INCHES NOMINAL IN
material_document_and_classificationQQ-S-763 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN4820-00-924-0533
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: N38903 · 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
KEY FEATURES
•
BODY INSIDE DIAMETER: 0.937 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.563 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: ANGULAR
•
HARDNESS RATING: 400.0 BRINELL STANDARD NOMINAL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: FAUCET
•
UNDER FLANGE HEIGHT: 0.437 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.800 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER0.937 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.563 INCHES NOMINAL IN
SEATING SURFACE SHAPEANGULAR
HARDNESS RATING400.0 BRINELL STANDARD NOMINAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED STD SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORFAUCET
UNDER FLANGE HEIGHT0.437 INCHES NOMINAL IN
FLANGE DIAMETER1.800 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.310 INCHES MINIMUM AND 1.311 INCHES MAXIMUM IN
SEAT ANGLE IN DEG90.000 NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
2-3Interchangeable
interchangeable cross-reference
interchangeable
18N-03Interchangeable
interchangeable cross-reference
interchangeable
50MP3-695Interchangeable
interchangeable cross-reference
interchangeable
T59756Interchangeable
interchangeable cross-reference
interchangeable
PEI 4046Interchangeable
interchangeable cross-reference
interchangeable
663999Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N38903?
N38903 is a CAPACITOR,FIXED,PLASTIC DIELECTR.
What parts can replace N38903?
There are 10 known substitutes for N38903: 2-3, 18N-03, 50MP3-695 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N38903?
N38903 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-924-0533. 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