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Technical Data Sheet
PartsTable / COMPONENT / H.S.98-20Z
H.S.98-20Z ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The H.S.98-20Z is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-222-0422, 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
H.S.98-20Z
NSN: 4810-01-222-0422
FSC: 4810
CAGE: 04845 — AUTOMATIC SWITCH COMPANY DBA ASCO (USA)
SPECIFICATIONS
Part NumberH.S.98-20Z
NSN4810-01-222-0422
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: H.S.98-20Z · 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
•
UNDER FLANGE HEIGHT: 0.662 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.105 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
SHANK DIAMETER: 0.235 INCHES NOMINAL IN
•
TIP DIAMETER: 0.090 INCHES NOMINAL IN
•
SEAT ANGLE: 55.0 DEGREES NOMINAL
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONAUTOMATIC SWITCH CO SOLENOID VALVE MODEL NO. 258
UNDER FLANGE HEIGHT0.662 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.105 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
SHANK DIAMETER0.235 INCHES NOMINAL IN
TIP DIAMETER0.090 INCHES NOMINAL IN
SEAT ANGLE55.0 DEGREES NOMINAL
MATERIALSTEEL CORROSION RESISTING
OVERALL HEIGHT0.895 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
1942960Interchangeable
interchangeable cross-reference
interchangeable
119493Interchangeable
interchangeable cross-reference
interchangeable
1916542Interchangeable
interchangeable cross-reference
interchangeable
874392Interchangeable
interchangeable cross-reference
interchangeable
954AM53Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H.S.98-20Z?
H.S.98-20Z is a H.S.98-20Z.
What parts can replace H.S.98-20Z?
There are 5 known substitutes for H.S.98-20Z: 1942960, 119493, 1916542 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H.S.98-20Z?
H.S.98-20Z is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-01-222-0422. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026