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hot oil resistant hose body: cast iron disc: cast iron stem: SS420 seat: brass or stainless steel standard: BS DIN ANSI If you want to know more globe A Complete Guide to Screwed Ball Valves - Industrial Valve floworkvalve.com/wp-content/themes/junj/single.php on line 95. They can be manually operated, with a wrench, a worm or an actuator. Big size If you're in the business of sourcing valves, screwed ball valves are likely a staple in your procurement list. ...