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A7918-003 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

A7918-003: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE, seat_angle: 45.0 DEGREES NOMINAL, overall_height: 1.500 INCHES NOMINAL IN, shank_diameter: 1.808 INCHES NOMINAL IN, flange_diameter: 1.808 INCHES NOMINAL IN, style_designator: POPPET. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-071-5577, 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
A7918-003
NSN: 4820-00-071-5577
FSC: 4820 — Valves, Nonpowered
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialNICKEL ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE
seat_angle45.0 DEGREES NOMINAL
overall_height1.500 INCHES NOMINAL IN
shank_diameter1.808 INCHES NOMINAL IN
flange_diameter1.808 INCHES NOMINAL IN
style_designatorPOPPET
NSN4820-00-071-5577
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A7918-003 · 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
•
SHANK DIAMETER: 1.808 INCHES NOMINAL IN
•
FLANGE DIAMETER: 1.808 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
SEAT ANGLE: 45.0 DEGREES NOMINAL
•
MATERIAL: NICKEL ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE
TECHNICAL CHARACTERISTICS
SHANK DIAMETER1.808 INCHES NOMINAL IN
FLANGE DIAMETER1.808 INCHES NOMINAL IN
OVERALL HEIGHT1.500 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
SEAT ANGLE45.0 DEGREES NOMINAL
MATERIALNICKEL ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE
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

No substitute or cross-reference records for this part.

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 A7918-003?
A7918-003 is a DISK,VALVE.
What is the NSN for A7918-003?
A7918-003 is cataloged in the U.S. Government catalog under NSN 4820-00-071-5577. 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.