Taco non-electric straight through zone valve with a 3/4" female IP x 3/4" male union nut and nipple. These straight pattern valves can be used with remote operators or built-in operators, but when using the built-in operator, turn the valve so the sensor is on the side rather than the top to prevent ambient temperature rising up into built-in operators as they also contain a temperature sensor.
Taco, Inc., founded in 1920, is a leading developer and supplier of hydronic-based heating and cooling components for both residential and commercial applications. Taco's core business is in circulators and pumps. Taco supplies one of the most highly regarded residential circulator lines in the HVAC industry — the Series 00 cartridge circulator series, which is the leading choice of both original equipment manufacturers and HVAC contractors nationwide. Taco products are universally known for their ruggedness, durability, and field reliability. Additional product lines include expansion tanks, valves, flow measurement devices, and heat exchangers.