TRS21 & BVV Butane Recovery Pump Valve Rebuild Kit hydro-x DOT & TC Certified for

DOT & TC Certified for Safe Transport

Built-in Vacuum Compression System: This innovative system removes excess air quickly

including naphtha

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and fish meal—Stash Base delivers a broad spectrum of macro and micronutrients

TRS21 & BVV Butane Recovery Pump Valve Rebuild Kit hydro-x DOT & TC Certified forThis 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