.Valve,Butterfly,Pool-Pro,1-1/2" Gear Stainless steel S32101 non-wetted stem: Stem does not come in contact with the media but is still compatible if in direct contact.
Actuators are available as either air to air (double acting) or air to spring (single acting)..Valve,Pneumatic,2-1/2",T-57P",PVC/FKM The actuators are sized to operate on 80 psi of air pressure, and can be sized to operate on different air pressures upon request.
.May be used vertically or horizontally. Minimum shut-off of 5 psi. It unseats to permit flow in one direction but seals against seat to prevent backflow.