Pentair Sta-Rite MasterTemp 300 Natural Gas Orifice (460753) powervac A weir is useful because

A weir is useful because it helps control how surface water enters the skimmer

supporting cleaner water and better day-to-day maintenance in systems built around the Auto-Skim design

Helps reduce cable twisting and improve movement

and plumbing size before ordering to ensure the correct fit

The see-through design makes it easier to check water level

Pentair Sta-Rite MasterTemp 300 Natural Gas Orifice (460753) powervac A weir is useful becauseFor compatible MasterTemp 300 heaters, this natural gas orifice helps control the amount of gas supplied to the burner system. It is a fuel specific part that should be matched to the heater model and service procedure. Replacing an incorrect, damaged, or missing orifice can help restore safe, consistent combustion when all other heater conditions are correct. Professional installation and verification are strongly recommended for any gas train