the microfarad (4 MFD) rating must match the motor's nameplate exactly to avoid damaging the start or run windings

The 3/8" SAE Flare side relies on metal-to-metal contact for its seal and does not require sealant

Featuring a 3/8" SAE flare by 1/4" MPT connection

including popular models like the Newco Ace

McDonnell & Miller 310800 Gasket the microfarad (4 MFD) ratingThe McDonnell & Miller 310800 Gasket is a critical sealing component engineered specifically for the 21 Series and 221 Series float operated water feeders. Also identified by model number 21 12, this 4 hole valve body gasket provides a high integrity seal between the valve assembly housing, the strainer body, and the feeder flange. In steam and hot water boiler applications, maintaining a leak proof connection at the make up water feeder is essential