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Technical Data Sheet
PartsTable / COMPONENT / 188479-0081
188479-0081 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, overall_height: 0.077 INCHES NOMINAL IN, style_designator: PLAIN, body_inside_diameter: 0.432 INCHES NOMINAL IN, body_outside_diameter: 0.521 INCHES NOMINAL IN, seating_surface_shape: FLAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-031-1645, 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
188479-0081
NSN: 4820-01-031-1645
FSC: 4820
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
overall_height0.077 INCHES NOMINAL IN
style_designatorPLAIN
body_inside_diameter0.432 INCHES NOMINAL IN
body_outside_diameter0.521 INCHES NOMINAL IN
seating_surface_shapeFLAT
end_item_identificationMAROTTA VALVE CORP PRESSURE REDUCING VALVE 280038
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
NSN4820-01-031-1645
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 188479-0081 · 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
•
SEATING SURFACE SHAPE: FLAT
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
BODY INSIDE DIAMETER: 0.432 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.521 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.077 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
STYLE DESIGNATORPLAIN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
END ITEM IDENTIFICATIONMAROTTA VALVE CORP PRESSURE REDUCING VALVE 280038
BODY INSIDE DIAMETER0.432 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.521 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
280038ITEM17Interchangeable
interchangeable cross-reference
interchangeable
188478-0030Interchangeable
interchangeable cross-reference
interchangeable
188478-30Interchangeable
interchangeable cross-reference
interchangeable
188479-0081CPInterchangeable
interchangeable cross-reference
interchangeable
188479-0081Interchangeable
interchangeable cross-reference
interchangeable
280038Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 188479-0081?
188479-0081 is a SEAT,VALVE.
What parts can replace 188479-0081?
There are 12 known substitutes for 188479-0081: 280038ITEM17, 188478-0030, 188478-30 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 188479-0081?
188479-0081 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-031-1645. 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