4" Full Port Bolted Ball Valve

4" Polypropylene Full Port Bolted Ball Valve Precision molded polypropylene is reinforced with fiberglass for additional strength. Self-aligning ball moves freely against the PTFE seats for smooth operation. The valve opens and closes with very little pressure on the handle. Ball is daimond turned, after molding, to make it spherically perfect, which provides precise contact between ball and seats. PTFE self-lubricating stem bushings and seats cannot stick or bind. 100 PSI maximum 4" male pipe thread