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SS158 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

SS158: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, seat_radius: 0.140 INCHES NOMINAL IN, thread_class: 3B, overall_height: 0.525 INCHES NOMINAL IN, outside_diameter: 0.418 INCHES NOMINAL IN, style_designator: PLUG. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-248-0796, 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
SS158
NSN: 4820-00-248-0796
FSC: 4820 — Valves, Nonpowered
CAGE: 11865 — B & G EQUIPMENT COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY
seat_radius0.140 INCHES NOMINAL IN
thread_class3B
overall_height0.525 INCHES NOMINAL IN
outside_diameter0.418 INCHES NOMINAL IN
style_designatorPLUG
nominal_thread_size0.112 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNS
NSN4820-00-248-0796
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: SS158 · 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
•
OUTSIDE DIAMETER: 0.418 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLUG
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
SEAT RADIUS: 0.140 INCHES NOMINAL IN
•
THREAD CLASS: 3B
•
THREAD QUANTITY PER INCH: 32
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.525 INCHES NOMINAL IN
OUTSIDE DIAMETER0.418 INCHES NOMINAL IN
STYLE DESIGNATORPLUG
NOMINAL THREAD SIZE0.112 INCHES IN
SEAT RADIUS0.140 INCHES NOMINAL IN
THREAD CLASS3B
THREAD QUANTITY PER INCH32
MATERIALCOPPER ALLOY
THREAD SERIES DESIGNATORUNS
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
158Reference 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 SS158?
SS158 is a DISK,VALVE.
What parts can replace SS158?
There is 1 known substitute for SS158: 158. Substitute compatibility should be verified for your specific system.
What is the NSN for SS158?
SS158 is cataloged in the U.S. Government catalog under NSN 4820-00-248-0796. 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.