EVSCO has a range of 4-way pneumatic actuated selector valves in air-to-spring, air-to-air and electric. Air-to-air and air-to-air selector valves are double acting with an air to spring return at 40 psi. 4-way electric selector valves have 115 VAC reversible motor standard, and a 12/24 VDC and 24 or 230 VAC reversible motor. Electric selectors have NEMA IV construction, and are available in 360-degree setups.

Orr & Orr have two formats of motor driven selector valve kits--three- and six-port systems. Both valves come with an installation sheet, connector and switch.