header valves
Valves & Actuation
Series 79 AtoA on Type 57 Fast Pack

Series Type 79 on Type 57 Butterfly Valve (1-1/2" – 24")

The Type-57 butterfly 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.

Ideal Applications Include:

Chemical Processing, Bleach Plants, Aquariums, Mining, Water Treatment, Landfills, Swimming Pools, Power Plants

Specifications

Sizes:

1 ½” – 24” Type-57/56/75 Butterfly Valve

Models:

Air to Air
Air to Spring (fail open)
Air to Spring (fail closed)

Air supply:

80psi (standard)
60 – 120 psi (optional)

Type:

Double piston, double rack and pinion

Bodies:

Glass filled polyamide; Cataphoresis coated aluminum; Stainless steel

Air Connections:

1/4" NPT

Mounting Dimensions:

ISO and Namur

Features/Benefits

  • Actuator body and end caps constructed of glass filled Polyamide or cataphoresis coated aluminum (Depending on valve size)
  • 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 ◦F – 125 ◦F temperature range
  • ¼" NPT air connections
Another CP Solved Logo