Valves & Actuation
![Asahi/America Duo-Bloc Type 21: Manually Actuated - CPVC \ EPDM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/1609005.2.jpg?itok=EUd1n7pg)
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 - CPVC \ FKM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/1609005.2_0.jpg?itok=vtgrqdwy)
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: Series 79 Pneumatic (Air to Air) Actuated - CPVC \ EPDM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/Asahi_Air_Act_CPVC.jpg?itok=3UbJrjvt)
Asahi/America Duo-Bloc® Type 21 thermoplastic ball valve packaged with Series 79 Air to Air Pneumatic Actuator. Features include: Glass-filled polyamide housing for a high degree of corrosion resistance. Position indication through visible indicator knob. Double rack and pinion design.
![Asahi/America Duo-Bloc Type 21: Series 79 Pneumatic (Air to Air) Actuated - CPVC \ FKM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/Asahi_Air_Act_CPVC_0.jpg?itok=qTd7RRcV)
Asahi/America Duo-Bloc® Type 21 thermoplastic ball valve packaged with Series 79 Air to Air Pneumatic Actuator. Features include: Glass-filled polyamide housing for a high degree of corrosion resistance. Position indication through visible indicator knob. Double rack and pinion design.
![Asahi/America Duo-Bloc Type 21: Series 79S Pneumatic (Air to Spring) Actuated - CPVC \ EPDM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/Asahi_Air_Act_CPVC_1.jpg?itok=O9ocW1wJ)
Asahi/America Duo-Bloc® Type 21 thermoplastic ball valve packaged with Series 79 Air to Spring (Fail Return) Pneumatic Actuator. Features include: Glass-filled polyamide housing for a high degree of corrosion resistance. Position indication through visible indicator knob. Double rack and pinion design. Units can be configured to fail-closed or fail-open.