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649750 — STOP,PISTON

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

649750: STOP,PISTON.

The STOP,PISTON is a the manufacturer industrial component. Key specifications include end_item_identification: USED ON HELICOPTER FOR SPARE PARTS. This part is cataloged in the U.S.

Government catalog under NSN 4810-01-028-1459, 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
649750
NSN: 4810-01-028-1459
NIINs: 010281459, 014784013
FSC: 4810 — Valves, Powered
CAGE: 3H889 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS (USA)
SPECIFICATIONS
end_item_identificationUSED ON HELICOPTER FOR SPARE PARTS
NSN4810-01-028-1459
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 649750 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ALUMINUM; 1.000 IN. OD,0.188 IN. THK; 0.500 IN. ID TAPERED TO 0.268 IN. AT 45 DEG ANGLE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONALUMINUM; 1.000 IN. OD,0.188 IN. THK; 0.500 IN. ID TAPERED TO 0.268 IN. AT 45 DEG ANGLE IN
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 649750?
649750 is a STOP,PISTON.
What is the NSN for 649750?
649750 is cataloged in the U.S. Government catalog under NSN 4810-01-028-1459. 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.