snippet: <p>E-X-P Union Ball Tankless Water Heater Service Valve Kit Hot & Cold Set of Full Port Forged DZR Brass Ball Valves w/ Union Ends & Adjustable Packing Glands. Designed for residential or commercial use with potable water. This approved Webstone valve is actuated by a blowout proof stem and features an adjustable packing gland. </p> (Page 1)