Sievers Poly Tanks offers a full line of valves and couplers. We offer valves in PP, PVC, CPVC, and SS. We offer all of our fittings and valves with either EPDM or VITON seals. Manufacturers we offer for our bulkhead fittings and Valves are Norwesco, Banjo, Green Leaf, Spears, Hayward, Asahi, Ace Roto Mold. Contact our sales staff with any questions or request for quotes. 866-866-8611