Waterway Plastics Bath Check Valve, 1", with Flapper | 670-1100 Spa Heater Parts ensuring it fits seamlessly with

ensuring it fits seamlessly with your existing system

or the pilot is weak and inconsistent during startup

flow regulation suffers and heater performance can become inconsistent

Manufacturer SKU: 20-1635GR-CES48-SAP-BLU

Waterway Plastics Bath Check Valve, 1", with Flapper | 670-1100 Spa Heater Parts ensuring it fits seamlessly withWaterway Plastics 670 1100 Check Valve Bath Waterway Plastics Check Valve Bath Waterway Plastics 670 1100 is a bath check valve with a 1 in connection and a flapper. It provides backflow protection in pool and spa circulation lines. In practice, it helps maintain unidirectional flow through the system by preventing reverse flow through the valve body. This description is written for technicians and serious buyers planning a replacement or retrofit.