TRS21 & BVV Butane Recovery Pump Valve Rebuild Kit Neocision Short Path System but the vacuum valve is

but the vacuum valve is outside of the controller

and as a chemical reagent in various applications

Check with your local fire marshal for guidance when operating indoors Closed Loop Reclamation Extraction System (Comes with 1 yr

A test was performed between the OEM piston and seal design and the BVV

flux agents

TRS21 & BVV Butane Recovery Pump Valve Rebuild Kit Neocision Short Path System but the vacuum valve isThis 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