Darlly SR450 S7M120 Inner/Outer Spa/Pool Filter Cartridge pumpparts The Tecmark latching air switch

The Tecmark latching air switch in DPNO format is designed for compatible threaded pneumatic control applications that require a maintained-state switching action

Supports cleaner and more dependable vacuum monitoring

Useful when replacing a seized or leaking original valve

This replacement is especially useful when the original wear ring is scored

A four-button topside panel can provide a clean and intuitive control experience when it is matched correctly to the spa

Darlly SR450 S7M120 Inner/Outer Spa/Pool Filter Cartridge pumpparts The Tecmark latching air switchA spa or pool filter cartridge pack helps maintain cleaner water when a matched set of cartridges is needed for the filtration system, and this Darlly Filtration SR450 S8M150 pack is designed for compatible applications where grouped replacement supports better overall upkeep. When multiple filter elements wear together, replacing them as a pack can help restore more balanced filtration performance. The SR450 and S8M150 references give this pack