Valves & Actuation
![Asahi/America Duo-Bloc Type 21: Manually Actuated - PP \ EPDM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/1619.005.2.jpg?itok=PXYR84Qn)
Asahi/America Duo-Bloc® Type 21 thermoplastic ball valves provide a dependable and economical way to handle corrosive chemicals. They perform at temperatures up to 250°F, and pressures to 230 psi (150 psi for polypropylene valves). True Union Duo-Bloc® Type 21 Ball Valves can be lifted from the line, simply by loosening the two union nuts. The valve can be disassembled, and parts may be replaced. The Duo-Bloc® feature blocks in two directions, leaving full pressure opposite, and allowing disconnection of downstream piping.
![Asahi/America Duo-Bloc Type 21: Manually Actuated - PVDF \ FKM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/1627005_0.jpg?itok=fB482hD5)
Asahi/America Duo-Bloc® Type 21 thermoplastic ball valves provide a dependable and economical way to handle corrosive chemicals. They perform at temperatures up to 250°F, and pressures to 230 psi (150 psi for polypropylene valves). True Union Duo-Bloc® Type 21 Ball Valves can be lifted from the line, simply by loosening the two union nuts. The valve can be disassembled, and parts may be replaced. The Duo-Bloc® feature blocks in two directions, leaving full pressure opposite, and allowing disconnection of downstream piping.
![Hayward Y-Check Valve: Automatic - PVC \ FPM](/sites/default/files/styles/list/public/images/product/aff6c8b118de75a267336c9066a0/Hayward%20Y-Check.jpg?itok=Vl7ZudWT)
Hayward Y-Check Valves prevent reversal of flow in piping systems. They are ideal where backflow could potentially cause damage to pumps, filters or process equipment. Hayward Y-Check Valves operate without the need for any adjustments or settings. A plastic coil (not a spring) supports the disc inside the body. When the inlet flow stops, back pressure (a minimum of 2 psi is required) moves the disc with its elastomer o-ring onto a plastic seat - shutting off the flow.
Features
• 150 psi @ 70°F (non-shock) • Full flow design, works in any position
![Spears Standard 2000 Series: Manually Actuated - PVC \ FKM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/3629_2.jpg?itok=F3MLGpWO)
Spears® True Union 2000 Ball Valves provide maximum versatility with fully interchangeable (with Series 2000 Ball Check Valves and 3-Way Ball Valves) valve cartridges. Provides for easier system design modifications and upgrades in multi-phase projects, or anywhere changes in valve type are desired. All True Union 2000 valves feature a low-profile, compact design for minimal space requirements. Choice of high grade EPDM or Viton® o-rings allows application-specific selection for optimum chemical resistance.
![Spears Type 1720 Utility Swing Check: Automatic - PVC \ EPDM](/sites/default/files/styles/list/public/images/product/caa27cb5512442de4c929571e0bc/S1720%20Series%202.jpg?itok=XZ2EDSAJ)
PVC True Union Utility Swing Check Valves are designed for horizontal installations, but may be installed in up-flow vertical position. Check valves must be installed with the valve’s FLOW arrow pointing in the direction of the flow. Flow velocity should not exceed 5 feet per second. Excellent for Pool and Spa, OEM and General Purpose applications.
• Pressure Rating - 150 psi @ 73°F • Maximum Back Pressure 75 psi @ 73°F • Maximum Service Temperature - 140°F
• EPDM seal for positive sealing