PartsTable
Technical Data Sheet

SS-CHS6-1/3 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

SS-CHS6-1/3: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include special_features: 0.375 IN. IN, end_item_identification: ONBOARD 417 FT (WMSL-750) DEEP WATER NATIONAL SECURITY CUTTER FT.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-412-3699, 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
SS-CHS6-1/3
NSN: 4820-01-412-3699
NIINs: 014123699, 015619867
FSC: 4820 — Valves, Nonpowered
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
special_features0.375 IN. IN
end_item_identificationONBOARD 417 FT (WMSL-750) DEEP WATER NATIONAL SECURITY CUTTER FT
NSN4820-01-412-3699
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: SS-CHS6-1/3 · 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
•
DISK LOADING METHOD: SPRING
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
DISK LOADING METHODSPRING
SPECIAL FEATURESINLET/OUTLET CONNECTION SIZE 0.375 IN; LENGTH 2.750 IN; 1/3 PSI CRACKING PRESSURE IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
581525-007Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 SS-CHS6-1/3?
SS-CHS6-1/3 is a VALVE,CHECK.
What parts can replace SS-CHS6-1/3?
There is 1 known substitute for SS-CHS6-1/3: 581525-007. Substitute compatibility should be verified for your specific system.
What is the NSN for SS-CHS6-1/3?
SS-CHS6-1/3 is cataloged in the U.S. Government catalog under NSN 4820-01-412-3699. 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.