The Series 795 knife gate valve from Victaulic is made for fluid lines containing solids or abrasive materials. All wear parts are enclosed in a single-seat cartridge kit. The design allows the valve to remain installed through ongoing maintenance cycles, reducing downtime by eliminating the need to remove the entire valve from the pipeline. The knife gate valve joins either grooved-end carbon steel or plain-end HDPE pipe. It is available in sizes from 3 to 12 inches and rated to 150 psi. 610/559-3300; www.victaulic.com.