Hayward Flow Control Systems

Poolmaster Series butterfly valves
Poolmaster Series butterfly valves feature a polyvinyl chloride (PVC) body and a disc with an ethylene propylene diene monomer (EPDM) liner. The valves are not vulnerable to electrolytic and galvanic corrosion, and they contain no byproducts that can contaminate water and process fluids. Unlike other plastic butterfly valves, these are constructed from a one-piece body that incorporates fully supported flanged bolt holes to prevent stressing of the mating pipe flanges. A blowout-proof Type 316 stainless steel shaft and a full body liner ensure positive sealing of the liner to the valve body. A solid integral ISO 5211 mounting pad enables smooth operation with a lever handle, gear or actuator. Options include gear operators, electric or pneumatic actuators, actuator mounts, and stem extensions. The valves are available in 2.0–8.0 in. sizes.

DAB Series all-plastic diaphragm valves
DAB Series all-plastic diaphragm valves are rated to 150 psi and provide excellent handling of difficult media, such as corrosive fluids, abrasives and slurries. They are suitable for use in high-purity and sanitary applications. They are available in manual or actuated (pneumatic or electric) models, and have a multi-turn design that enables precise control. Valve bodies are available in 0.5–6.0-in.-dia. Polyvinyl chloride (PVC), 0.5–4.0-in. dia. chlorinated polyvinyl chloride (CPVC), 0.5–10.0-in.-dia. polypropylene (PPL), or 0.5–8.0-in.-dia. polyvinylidene fluoride (PVDF). Diaphragms can be made from ethylene propylene diene M-class rubber (EPDM), fluoroelastomer (FPM) or polytetrafluoroethylene (PTFE), and may be connected to the valve bodies with molded-in ANSI flanges, ASTM True Union socket-end connections, or threaded bodies.

QTA and QVC Series ball valves
QTA and QVC Series industrial, compact ball valves feature socket or threaded-pipe connectors, as well as a rugged, all-plastic design similar to that found on higher-cost ball valves. They have Santoprene thermoplastic elastomer seats, full porting, and a 150-psi pressure rating. The QVC Series valves are available in 0.5-in to 4.0-in. sizes in gray or white polyvinyl chloride (PVC). The QTA Series valves are available in 0.5-in to 2.0-in. sizes in gray or white PVC, and include socket and threaded true union end connections. Both provide easy quarter-turn operation and can fit into spaces too small for other valves.