Gate valves isolate flow with a linear wedge or knife disc in flanged, wafer or threaded bodies from DN20 to DN2400. Ductile iron, WCB, SS304/316 or carbon steel with EPDM/NBR/PTFE or metal seats give bubble-tight shutoff, full bore, low pressure drop and corrosion resistance. Rising or non-rising stem, resilient/wedge/knife type, handwheel, gear, pneumatic or electric driven. For water, wastewater, oil, slurry, HVAC, power under DIN/ANSI/JIS/EN.