VALVE EXH (P/N 629404) - As Removed

Part 629404 is an exhaust valve for aircraft piston engines. This heat-resistant steel component opens during the exhaust stroke to discharge combusted gases from the cylinder. The valve seats in the cylinder head assembly and interfaces with the valve seat, guide, spring, and rocker arm mechanism.

Installation requires verification of engine compatibility per the Illustrated Parts Catalog and adherence to the applicable engine maintenance manual specifications. Proper seating and clearance ensure efficient gas scavenging and engine performance.

What is the VALVE EXH (P/N 629404)?

Part 629404 is an exhaust valve for aircraft piston engines. This heat-resistant steel component opens during the exhaust stroke to discharge combusted gases from the cylinder.

What hydraulic fluid type is the 629404 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 VALVE EXH against your aircraft maintenance manual for fluid compatibility.

Does the 629404 come pressure-tested and certified?

Overhauled and repaired hydraulic components are pressure-tested per manufacturer specifications and include 8130-3 documentation. The VALVE EXH is available in: As Removed. 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.