Pentair Sta-Rite MasterTemp 400/Max-E-Therm 400 LP Orifice (77707-0441) valveparts It is a practical option

It is a practical option when the original insert needs both visual and functional renewal

Supports correct pump strainer service

Replacement weir for SP1070/SP1071 skimmers

The CMP generic backwash valve piston assembly is designed for compatible slide-valve applications where the internal piston section needs replacement

Pentair Sta-Rite MasterTemp 400/Max-E-Therm 400 LP Orifice (77707-0441) valveparts It is a practical optionThis LP orifice is used in compatible MasterTemp 400 and Max E Therm 400 heaters configured for propane operation. It helps meter propane flow to the burner system, making correct model and fuel matching essential. If the heater is being serviced after gas train work, conversion work, or a combustion related diagnosis, the orifice should be inspected and verified. Gas heater parts should be installed only by qualified personnel who can confirm safe