TRS21 & BVV Butane Recovery Pump Valve Rebuild Kit

This is the complete valve rebuild kit for the cylinder head on the BVV Recovery pumps or the TRS21. This is only for 2 pistons. So if you have the BVV 4 Cylinder pump you would need two kits. These gaskets are upgraded and are compatible with butane and propane gasses, all the O-ring seals in this kit are Viton