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GY270-3 — DRIVE,ENGINE,ELECTRICAL STARTER

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

GY270-3: DRIVE,ENGINE,ELECTRICAL STARTER.

DRIVE,ENGINE,ELECTRICAL STARTER. Key specifications include material: STEEL CORROSION RESISTING, overall_length: 2.780 INCHES NOMINAL IN, largest_outside_diameter: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-520-7980, 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
GY270-3
NSN: 4820-00-520-7980
FSC: 4820 — Valves, Nonpowered
CAGE: 28968 — CIRCOR INSTRUMENTATION TECHNOLOGIES, INC. DBA HOKE GYROLOK (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_length2.780 INCHES NOMINAL IN
largest_outside_diameter0.250 INCHES NOMINAL IN
NSN4820-00-520-7980
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: GY270-3 · 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
•
LARGEST OUTSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
LARGEST OUTSIDE DIAMETER0.250 INCHES NOMINAL IN
OVERALL LENGTH2.780 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 3
Y270-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
A4305PC7Reference document
Same NSN cross-reference
Reference document — Secondary reference
A3065Reference 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 GY270-3?
GY270-3 is a DRIVE,ENGINE,ELECTRICAL STARTER.
What parts can replace GY270-3?
There are 3 known substitutes for GY270-3: Y270-3, A4305PC7, A3065. Substitute compatibility should be verified for your specific system.
What is the NSN for GY270-3?
GY270-3 is cataloged in the U.S. Government catalog under NSN 4820-00-520-7980. 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.