Hayward Vari-Flo Sight Glass w/o O-Ring (SPX0710MA) palintest and connection style before installation

and connection style before installation

and HM2 heater systems where temperature regulation hardware needs replacement but the control knob is not required

A refractory kit is useful because it helps protect the heater’s internal burner area from heat exposure while supporting the intended combustion environment

Supports proper fit in older system configurations

Filter lids are exposed to pressure cycles

Hayward Vari-Flo Sight Glass w/o O-Ring (SPX0710MA) palintest and connection style before installationThis replacement sight glass helps monitor water clarity during backwash and rinse cycles on compatible Hayward Vari Flo multiport valves. It is supplied without the O ring, making it a focused replacement when only the glass component is needed. Sight glass for compatible Vari Flo valve assemblies Allows visual checking during backwash or rinse operation Supplied without O ring Useful when the original sight glass is cloudy or damaged Supports