Knife gate valves are economical quick acting valves for low pressure applications. They can be easily taken apart and the seals can be changed; even the valve body can be changed without upsetting the ends that may be glued to your pipes. They offer unrestricted flow and are quick opening, 100% water tested at the factory and quite low in cost. These 1½” to 8” valves are all PVC with stainless steel shafts, polypropylene knife gates (except for 4”, 6” and 8”, which have stainless steel gates), and have Santoprene™ seals. The valves listed are all slip by slip unless otherwise noted. Please note: we can order ends in various other styles. Like most valves, they are not for use in freezing conditions. One year warranty.