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6318038 — SEALING PISTON ASSEMBLY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

6318038: SEALING PISTON ASSEMBLY.

The SEALING PISTON ASSEMBLY is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-330-8844, 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
6318038
NSN: 4820-01-330-8844
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
general_characteristics_item_descriptionP/N 6318040 BALANCING DIAPHRAGM 1;P/N 6318043 GUIDE TIP 1;P/N 6318042 BUSHING 1;P/N 6318041 BUSHING HOUSING 1;P/N 6318039 LIFTING SPINDLE 1
NSN4820-01-330-8844
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 6318038 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: P/N 6318040 BALANCING DIAPHRAGM 1;P/N 6318043 GUIDE TIP 1;P/N 6318042 BUSHING 1;P/N 6318041 BUSHING HOUSING 1;P/N 6318039 LIFTING SPINDLE 1
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONP/N 6318040 BALANCING DIAPHRAGM 1;P/N 6318043 GUIDE TIP 1;P/N 6318042 BUSHING 1;P/N 6318041 BUSHING HOUSING 1;P/N 6318039 LIFTING SPINDLE 1
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 1
336-190-015Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6318038?
6318038 is a SEALING PISTON ASSEMBLY.
What parts can replace 6318038?
There is 1 known substitute for 6318038: 336-190-015. Substitute compatibility should be verified for your specific system.
What is the NSN for 6318038?
6318038 is cataloged in the U.S. Government catalog under NSN 4820-01-330-8844. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.