Often used for emission analysis and gas processing, these valves attach to each other horizontally to create one centralized manifold for servicing multiple process lines. They operate on electricity to automatically divert flow between ports. Valves are sold separately and require 6-32 threaded rods and locknuts (sold separately) to assemble the valves into a manifold. Valves do not require a minimum pressure drop for operation. They can direct flow from the side-port inlet to the side-port outlet or the center-port outlet. Valves cannot shut off flow. The actuator is mounted directly to the valve body to minimize movement and reduce wear.

303 stainless steel valves are more corrosion resistant than brass valves.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.