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Technical Data Sheet
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858601 — SEAT,VALVE

✓ Government record, cited
Hypertec · GATE VALVE
PRODUCT OVERVIEW

858601: SEAT,VALVE.

A Hypertec® ProConnectLite® S/FTP Cat7 snagless LSZH Grey-1m. Key specifications include material: STEEL BODY, overall_height: 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, style_designator: PLAIN, seat_angle_in_deg: 0.750 NOMINAL, body_inside_diameter: 1.276 INCHES MINIMUM AND 1.286 INCHES MAXIMUM IN, fsc_application_data: GASOLINE ENGINE,NOT STARTING ENGINE OR AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-353-8048, 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
858601
NSN: 4820-00-353-8048
FSC: 4820 — Valves, Nonpowered
CAGE: 89749 — CLARK MATERIAL HANDLING COMPANY (USA)
SPECIFICATIONS
materialSTEEL BODY
overall_height0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
style_designatorPLAIN
seat_angle_in_deg0.750 NOMINAL
body_inside_diameter1.276 INCHES MINIMUM AND 1.286 INCHES MAXIMUM IN
fsc_application_dataGASOLINE ENGINE,NOT STARTING ENGINE OR AIRCRAFT
body_outside_diameter1.515 INCHES MINIMUM AND 1.516 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
NSN4820-00-353-8048
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 858601 · Hypertec ⚠ 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
•
FSC APPLICATION DATA: GASOLINE ENGINE,NOT STARTING ENGINE OR AIRCRAFT
•
BODY OUTSIDE DIAMETER: 1.515 INCHES MINIMUM AND 1.516 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 1.276 INCHES MINIMUM AND 1.286 INCHES MAXIMUM IN
•
MATERIAL: STEEL BODY
•
SEAT ANGLE IN DEG: 0.750 NOMINAL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
FSC APPLICATION DATAGASOLINE ENGINE,NOT STARTING ENGINE OR AIRCRAFT
BODY OUTSIDE DIAMETER1.515 INCHES MINIMUM AND 1.516 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER1.276 INCHES MINIMUM AND 1.286 INCHES MAXIMUM IN
MATERIALSTEEL BODY
MATERIALSTEEL FACE
SEAT ANGLE IN DEG0.750 NOMINAL
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES 2
WAUG704Reference document
Same NSN cross-reference
Reference document — Secondary reference
1329312Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 858601?
858601 is a SEAT,VALVE manufactured by Hypertec.
What parts can replace 858601?
There are 2 known substitutes for 858601: WAUG704, 1329312. Substitute compatibility should be verified for your specific system.
What is the NSN for 858601?
858601 is cataloged in the U.S. Government catalog under NSN 4820-00-353-8048. 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.