Please confirm the RA1H5-1 check valve’s compatibility with your aircraft using these documents:
Manifold Check Valves provide a central pneumatic distribution point for aircraft equipped with dual dry air pumps. If one pump should fail, the check valve is designed to automatically isolate it from the system, providing continued air flow from the operating pump.
Product Details:
- Replaces Airborne PN: 1H5-1
- Ports – Two 5/8″ hose fittings (vacuum pumps)
- Two 3/8″ hose fittings (instruments)
- Two 1/4″ hose fittings (suction gauge)

CA90-820011-1 Nose Gear Bolt for Beechcraft 99 Aircraft, King Air, and 1900, PMA Products | McFarlane Aviation CA908200111 