Inquiry (采购产品): Ball Valve on/off indicator I am not joking! Regulators under NYS Bulk Tank Regs. and Process Safety Management guidelines are asking for ball valve on/off indicators on the ball valve lever. Do you folks sell or have ever heard of such a device? Obviously perpendicular is off and parellel is on but have you ever heard of a plastic slip on device for this? Thanks! Chris Boehm, Von Roll Isola., Sch'dy. N.y.. **** Hidden Message ***** Christopher Boehm One West Campbell Rd Schenectady, NY 12306 USA Company: Von Roll Isolla, Inc Title: Mgr. EHS Phone: 518-344-7152 Fax: 518-344-7273 E-mail: chris.boehm@vonroll-isola.com **** Hidden Message ***** chris.boehm@vonroll-isola.com