Sterlco 693.13519.00 D-15X-G Stainless Steel Bulb Well .75 Inch For Standard 6 ft. Capillary Models style inserts into tank or line tee allowing for the removal of the temperature valve without draining the tank or breaking a line open. Bulb wells also act as a chemical barrier to the valve sensor bulb allowing for a brass valve with a stainless bulb well in the event liquids are caustic or corrosive.
Original equipment manufacturers size spec bulb well fits D-15X-G valves with 6 foot capillaries produced by Sterlco or Sterling Inc. These all brass bulb wells are not sweat shop knock offs, they are built to specification every time. Made from high quality precision brass alloy.