PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 188478-0030
188478-0030 ✓ 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 SUPPORT SEAT is a the manufacturer industrial component. Key specifications include end_item_identification: VALVE REG, criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-030-5231, 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
188478-0030
NSN: 4820-01-030-5231
FSC: 4820
CAGE: 99657 — MAROTTA CONTROLS INC (USA)
SPECIFICATIONS
end_item_identificationVALVE REG
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
NSN4820-01-030-5231
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 188478-0030 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL CORROSION RESISTING STEEL,OD 0.561 IN.,FLANGE OD 0.678 IN.,ID 0.377 IN.,THICKNESS OVERALL 0.161 IN.,FLANGE THICKNESS 0.066 IN.,FACE GROOVE OD 0.527 IN.,FACE GROOVE ID 0.430 IN.,FACE GROOVE DEPTH 0.073 IN. IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL CORROSION RESISTING STEEL,OD 0.561 IN.,FLANGE OD 0.678 IN.,ID 0.377 IN.,THICKNESS OVERALL 0.161 IN.,FLANGE THICKNESS 0.066 IN.,FACE GROOVE OD 0.527 IN.,FACE GROOVE ID 0.430 IN.,FACE GROOVE DEPTH 0.073 IN. IN
END ITEM IDENTIFICATIONMAROTTA VALVE CORP PRESSURE REDUCING VALVE P/N 280038
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
280038ITEM18Interchangeable
interchangeable cross-reference
interchangeable
280038Interchangeable
interchangeable cross-reference
interchangeable
188479-0081Interchangeable
interchangeable cross-reference
interchangeable
280038 PIECE 16Interchangeable
interchangeable cross-reference
interchangeable
146712-0030Interchangeable
interchangeable cross-reference
interchangeable
280038 ITEM 16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 188478-0030?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 188478-0030?
188478-0030 is a SUPPORT SEAT.
What parts can replace 188478-0030?
There are 11 known substitutes for 188478-0030: 280038ITEM18, 280038, 188479-0081 and 8 more. Substitute compatibility should be verified for your specific system.
Is 188478-0030 still available?
188478-0030 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 188478-0030

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026