The Taco Grooved End Multi-Purpose Valve is designed to give you one more feature in every area of the valve’s construction and provide more reliable flow control. In addition to being a check, plug and balance valve, you can also use the Multi-Purpose Valve for metering the flow. Two Shrader valve metering connections are included as standard with each valve. Internally, the valve includes a bronze gland and stainless steel stem sleeve to give you a lifetime seal and assure ease of operation after it has been in the line for a period of time. It won’t freeze up and render itself useless for future adjustments as cast iron pump discharge valves tend to do.