Tranz Former Valve, fits existing float valves with GHT fitting on top, made from durable non-corrosive GF nylon. Tranzforms restricted flow valves into high flow valves by attaching to the top of the existing valve and offering a full open release. 5-100 psi range, uses the existing float parts to trigger the additional full flow valve. Durable molded housing with a unique no twist GHT fitting on top. Easy 3-minute install, no tools needed.