* Precision Molded in Polypropylene - reinforced with fiberglass for additional strength * Sizes 1/2" thru 4" with FKM (Viton type) seals.* 304 Stainless Steel Bolts and nuts* Self-aligning ball moves freely against the PTFE seats for smooth operation.* The valve opens or closes with very little pressure on the handle.* Ball is diamond 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.
