6" RIV Cast Iron Knife Gate Valve Unidirectional Double Acting Pneumatic Actuator AGRI Standard and ANSI 150 with Position Sensor. RIV132To suit ANSI 150 and AGRI Standard Square Flanges, 4 Hole, Cast Iron Body, Stainless Steel Blade, NBR Gaskets, Fully Enclosed for Safety, with Position Indicator, Double Acting Pneumatic Actuator Operation, with Position Sensor Rated PN10, Temperature 20C to 90C. A cast iron knife gate valve with a unidirectional double acting pneumatic actuator, AGRI standard, ANSI 150 rating, and position sensor is a robust and versatile valve assembly used in