'GRASSO' Single Stage Ammonia Refrigeration Compressor Model RC 610.The compressor is delivered with features and accessories as follows:- ? Electric capacity control including unloaded start ? Crankcase heater ? Discharge & Suction stop valves, not mounted ? Pressure gauge panel, mounted ? Pressure switch panel, mounted ? Fly wheel ? Motor pulley ? Required no. of V-Belts ? Drive guard, one side protection ? Slide rail PERFORMANCE AND TECHNICAL DATA No of cylinders : 6 Refrigerant : NH3 Cylinder Bore,mm : 110 Piston stroke,mm : 85 Drive Shaft Speed(RPM): 1500 (Max)