Hayward Low NOx Vacuum Switch (IDXLBVS1930) filters Hayward diffuser plate

Hayward diffuser plate

Pleatco PTL47W-P4 filter cartridge with FC-0315 and FC-0315-HB cross references

That keeps the repair more consistent with the rest of the system and helps protect long-term serviceability

CMP 1-1/2 inch slip inlet

Hayward Low NOx Vacuum Switch (IDXLBVS1930) filters Hayward diffuser plateDesigned for precise service work on compatible Hayward heating systems, Hayward Low NOx Vacuum Switch helps restore the fit, sensing, flow, or combustion support needed for dependable heater operation. It is a practical replacement choice when an existing component is worn, damaged, or no longer performing as it should. Pool heaters rely on tightly matched internal parts to manage heat, airflow, water movement, and safety controls. Using the correct