True Union
![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-BlocĀ® 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-BlocĀ® 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-BlocĀ® 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.
![Asahi/America Duo-Bloc Type 21: Series 79S Pneumatic (Air to Spring) Actuated - CPVC \ FKM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/Asahi_Air_Act_CPVC_2.jpg?itok=yEcASIRz)
Asahi/America Duo-BlocĀ® 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.
![Georg Fischer Type 546 Series: Type 233 Pneumatically Actuated with Manual Override - CPVC \ EPDM](/sites/default/files/styles/list/public/images/product/1d2fd29c6921d1d725c55c55563e/Georg_Fischer_PA_FC_BV_CPVC.jpg?itok=-YfkCmca)
The Type 233 series pneumatically actuated ball valves have the same features and benefits of the +GF+ Type 546 manual valves. The Type 233 is the ultimate choice for the high demands of the industrial world. It is available in PVC, CPVC, Polypropylene and PVDF material. The valve can be configured for throttling or for simple open/close functionality. The optional declutchable manual override is ideal for applications where emergency operation of the valve is required. Additionally, the electro-pneumatic positioner, stroke limiter, and feedback switches give flexibility for integration into a wide variety of applications.