PresAir Trol FF Switch [Center Spout] [Green Cam] [Threaded] (MTG-311A) jets Helps maintain reliable skimmer sealing

Helps maintain reliable skimmer sealing or flow performance

Microbellows are useful because they provide the flexible pressure response needed for compact pneumatic controls to operate properly

This type of part is especially useful when the original ring has become stretched

this topside overlay helps support clearer button identification and contributes to smoother control-panel operation

PresAir Trol FF Switch [Center Spout] [Green Cam] [Threaded] (MTG-311A) jets Helps maintain reliable skimmer sealingThe PresAir Trol FF Switch [Center Spout] [Green Cam] [Threaded] (MTG 311A) is an air control or air switch component from Presair Trol, intended for compatible spa and bath systems where correct fit and responsive operation are required. The listed part number is MTG 311A, making it easier to match this item against an existing component, parts diagram, or previous service record. Key listed details include Center Spout, Green Cam, Threaded, 311A,