STPVALVE https://validator.w3.org/feed/docs/rss2.html Soft Seal Valve Split Body Ball Valves Part-turn Electric Valve Actuator Manual operated Valve Pneumatic Actuated Valve Electric Actuated Valve Hydraulic Actuated Valve Solenoid Valve Cast Steel Valve Forged Steel Valve Cast Iron Valve Carbon steel Valve Stainless steel Valve Exotic Alloy Valve Other Material Valve Top Entry Valve Sideentry Valve End Entry Valve Welded Body Valve Three Way Valve Floating Ball Valve Trunnion Mounted Ball Valve Linear Motion Valves Rotary Motion Valves Quarter Turn Valves Flange End Valves Butt-Welded End Valves Screwed End Valves Socket-weld End Valves Wafer Type Valves Standardportvalve Fullportvalve Reducedportvalve V-shaped ball valve Shutoff/On Valve Throttling& Regulating Valve Flow-direction Control Valve Non-Return Valve Safety &Relief Valve Ball Valve Check Valve Knife Gate Valve Butterfly Valve Plug Valve Strainer Needle Valve Other designed valves Hard Seal Valve Globe Valve Gate Valve