CAT 1000 pH Controller Package valve-type_Butterfly 1 and has a smooth

1 and has a smooth surface

This will eliminate bubble noise and visibility

The original Hayward length was 3-15/16 inch length and 2-3/8 inch width

you can purchase item R172653 which is a 25 square foot cartridge with special plug

CAT 1000 pH Controller Package valve-type_Butterfly 1 and has a smoothThe Hayward CAT 1000 automated controller monitors and automatically maintains healthy pH balance, protecting the pool surface and equipment while promoting bather comfort. The CAT 1000 implements chemical feeding in proportion to demand, ensuring precise pH maintenance without overfeeding. This is the same CAT technology that thousands of commercial pools, water parks, zoos, and public water features count on daily to meet their stringent water