CHECK VALVE (P/N 8420-018-003) - New Surplus
P/N: 8420-018-003
Category: Valves & Actuators
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 1 Available |
Product Description
The 8420-018-003 is a check valve for aircraft pneumatic systems that permits flow in one direction while blocking reverse flow. This one-way valve prevents backflow in environmental control system bleed-air lines, protecting downstream components from pressure reversals. Typically constructed from aluminum or steel with precision-machined internal seating surfaces, the valve maintains system integrity during normal operation and emergency conditions.
Installation requires correct flow direction orientation and torque specification per the aircraft maintenance manual. Port size and connection type must match system requirements.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the CHECK VALVE (P/N 8420-018-003)?
The 8420-018-003 is a check valve for aircraft pneumatic systems that permits flow in one direction while blocking reverse flow. This one-way valve prevents backflow in environmental control system bleed-air lines, protecting downstream components from pressure reversals.
What hydraulic fluid type is the 8420-018-003 compatible with?
Hydraulic component compatibility depends on the aircraft system design. Common aviation hydraulic fluids include MIL-PRF-5606 (mineral-based), MIL-PRF-83282 (synthetic), and Skydrol (phosphate ester). Verify the CHECK VALVE against your aircraft maintenance manual for fluid compatibility.
Does the 8420-018-003 come pressure-tested and certified?
Overhauled and repaired hydraulic components are pressure-tested per manufacturer specifications and include 8130-3 documentation. The CHECK VALVE is available in: New Surplus. Contact us for test documentation on your selected condition.
What is the turnaround time for hydraulic component orders?
In-stock hydraulic components ship same business day before 3 PM EST. We provide 24/7 AOG support at (904) 998-9101 for urgent hydraulic system needs. RFQ submissions are typically quoted within 24 hours.
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