Product Details BFVAC NC - BUTTERFLY VALVE, ACTUATED / CLAMP ENDS / NORMALLY CLOSED - 2 1/2", Commonly referred to as "normally closed", these quarter-turn stainless steel sanitary Butterfly valves use a disc mounted on a rotating spring-loaded shaft to close and control flow. These valves are assembled with an actuator using air to open. Designed to create a leak-proof connection to clamp fitting when combined with a gasket and clamp. In the event of failure, these valves fail closed. BUTTERFLY, NORMALLY CLOSED, PNEUMATIC ACTUATED / CLAMP ENDS Butterfly Valve Clamp comes with a stainless steel body for reliable control in sanitary process systems. Clamp end allows for easy disassembly to clean, repair or replace parts as necessary. Steel O'Brien is an ISO 9001 Certified Company, an international standard for quality management system PLEASE VERIFY FITMENT AND CONDITION BY CAREFULLY LOOKING AT THE PICTURES TAKEN AND PART NUMBERS PROVIDED. IF YOU HAVE ANY QUESTIONS OR YOU ARE NOT 100% SURE THAT THE PART WILL FIT PLEASE ASK BEFORE PURCHASING. THE COMPATIBILITY LIST IS FOR REFERENCE ONLY. IF YOU SPOT A MISTAKE I WOULD APPRECIATE YOU TAKING YOUR TIME AND LETTING ME KNOW SO WE CAN CORRECT IT. BUYER IS RESPONSIBLE FOR COMPATIBILITY ONCE ITEM IS BOUGHT. WE ARE NOT RESPONSIBLE FOR RE-FLASHING OR PROGRAMMING THE COMPUTERS AND MODULES.WE RECOMMEND GETTING INSTALLATION, PROGRAMMING AND RE-FLASHING DONE BY A PROFESSIONAL. We only ship to the address that is in your account no exceptions. All international shipping is done trough international shipping AND MOST IMPORTANT: THANK YOU FOR YOUR BUSINESS AND THANK YOU FOR BEING OUR CUSTOMER. I HOPE WE WERE ABLE TO SERVE YOU AND HOPE WE WENT BEYOND YOUR EXPECTATIONS.