Pentair Sta-Rite MasterTemp 250 LP Orifice (460740) intermatic and the way internal components

and the way internal components stay protected during cleaner operation

and this generic version is sized with a 19-1/2 inch inside diameter and 5/16 inch cross-section using the O-200 reference

secure step surface on compatible pool access equipment without replacing the full ladder

and this generic version is sized with a 12 inch inside diameter and a substantial 7/16 inch cross-section using the O-99P reference

For larger Hayward cartridge filter systems

Pentair Sta-Rite MasterTemp 250 LP Orifice (460740) intermatic and the way internal componentsThe LP orifice for MasterTemp 250 heaters supports proper propane fuel delivery within the combustion system. A correctly matched orifice is essential when servicing fuel components or completing LP related repairs. This part helps maintain the intended gas flow for the 250K heater platform, which supports stable ignition and efficient heat production when installed correctly. Gas components should always be handled with care by qualified service