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HM502 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

HM502: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: PLASTIC, overall_height: 0.375 INCHES NOMINAL IN, inside_diameter: 0.625 INCHES NOMINAL IN, outside_diameter: 1.750 INCHES NOMINAL IN, style_designator: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-458-6877, 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
HM502
NSN: 4820-00-458-6877
FSC: 4820 — Valves, Nonpowered
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialPLASTIC
overall_height0.375 INCHES NOMINAL IN
inside_diameter0.625 INCHES NOMINAL IN
outside_diameter1.750 INCHES NOMINAL IN
style_designatorPLAIN
NSN4820-00-458-6877
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: HM502 · 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: 1.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
INSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.375 INCHES NOMINAL IN
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
INSIDE DIAMETER0.625 INCHES NOMINAL IN
MATERIALPLASTIC
SUBSTITUTES & CROSS-REFERENCES 2
762E17Reference document
Same NSN cross-reference
Reference document — Secondary reference
9-2923-99Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 HM502?
HM502 is a DISK,VALVE.
What parts can replace HM502?
There are 2 known substitutes for HM502: 762E17, 9-2923-99. Substitute compatibility should be verified for your specific system.
What is the NSN for HM502?
HM502 is cataloged in the U.S. Government catalog under NSN 4820-00-458-6877. 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.