Description
Series 79 Pneumatic Actuator on Type-21 Ball Valve
The Type-21 ball valve from Asahi-America has the ability to mount a Series 79 pneumatic actuator to allow for the valve to be controlled via an air supply. Actuators are sized to operate on 80 psi of air pressure, and can be sized to operate on different air pressures upon request. Actuators are available as either air to air (double acting) or air to spring (single acting), with air to spring units having the option to fail either open or closed. The actuators are mounted on the valve through a coupling and bracket set up with an ISO bolt pattern. Units have a visual position indicator and operate as quarter turn actuators. Automation can be performed through optional equipment such as solenoids, positioners or BUS systems.
Two sets of end connectors (socket and threaded) are included with all PVC and CPVC valves in sizes 1/2 to 2 in. 2-1/2, 3 and 4 in. sizes come with socket end connectors.
Ideal Applications Include:
Chemical Processing, Bleach Plants, Aquariums, Mining, Water Treatment, Landfills, Swimming Pools, Power Plants
Features & Benefits:
- Actuator body and end caps constructed of glass filled Polyamide
- Double piston double rack and pinion
- ISO valve mounting pattern
- ISO female star drive output
- NAMUR accessory mounting pattern
- Operates on 80 psi (recommended) to 120 psi (maximum) filtered air supply
- Spring return models have cataphoresis coating or chromium passivation for spring protection
- Available in air to air or air to spring models
- Position indication through visible indicator knob and flats on actuator shaft
- Actuator shaft constructed of cataphoresis coated steel or stainless steel with double o-ring seals top and bottom
- End position adjustable travel stops
- Polyacetal or PTFE/bronze piston guides
- Self-lubricating BUNA-N O-ring seals
- -25 - 125 degrees fahrenheit temperature range
- 1/4 in. NPT air connections
Note: Actuated and Flanged connection valves are special order with a 3-4 week average lead time.
Asahi Part Numbers: 2904005, 2904005, 2904007, 2904007, 2904010, 2904010, 2904012, 2904012, 2904015, 2904015, 2904020, 2904020, 2904025, 2904030, 2904040, 2908005, 2908005, 2908007, 2908007, 2908010, 2908010, 2908012, 2908012, 2908015, 2908015, 2908020, 2908020, 2908025, 2908030, 2908040