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Technical Data Sheet
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30818 4175 — 30818 4175

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

30818 4175: 30818 4175.

The 30818 4175 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-453-6026, 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
30818 4175
NSN: 4820-01-453-6026
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
Part Number30818 4175
NSN4820-01-453-6026
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 30818 4175 · 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
•
VALVE TYPE FOR WHICH DESIGNED: RELIEF
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: 11889N
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE
•
OUTSIDE DIAMETER: 2.656 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
ATTACHMENT METHOD: THREADED
TECHNICAL CHARACTERISTICS
VALVE TYPE FOR WHICH DESIGNEDRELIEF
VALVE MODEL NUMBER FOR WHICH DESIGNED11889N
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE
OUTSIDE DIAMETER2.656 INCHES NOMINAL IN
END ITEM IDENTIFICATIONNIMITZ CLASS CVN
MATERIALCOPPER ALLOY
ATTACHMENT METHODTHREADED
SUBSTITUTES & CROSS-REFERENCES 2
11889NReference document
Same NSN cross-reference
Reference document — Drawing number reference only
11889N PC 8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 30818 4175?
30818 4175 is a 30818 4175.
What parts can replace 30818 4175?
There are 2 known substitutes for 30818 4175: 11889N, 11889N PC 8. Substitute compatibility should be verified for your specific system.
What is the NSN for 30818 4175?
30818 4175 is cataloged in the U.S. Government catalog under NSN 4820-01-453-6026. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.