This Gear Up Check Valve will out-perform the Prestolite valve. However, it's not yet approved for certified aircraft. With that said...
Our Gear Up Check Valve was engineered and designed to fit and function in Prestolite HYC5000 series powerpacks. This valve locks pressure with a proven hydraulic method. It costs just a fraction of what repair facilities are charging to fix the same issue.
If your landing gear are trying to drop down during flight and your Prestolite pump is continuously cycling to keep the gear in the wheel wells, odds are your GUCV is leaking. There is no repairing the Prestolite valves. They haven't made new valves in decades, that means you're getting decades old GUCV's put in your powerpack. The rubber has already started to dry-rot prior to it being installed in your pump. Think of it as new OLD OLD stock.
My Valve was engineered to replace the existing failing Gear Up Check Valve. We do not use a rubber seal tip. We designed a valve with a steel ball and a brass seat that will not rot and decay over time.
Call me for more information.
Phil
586-646-5671
