Flowserve Corp. has announced the certification of the Flowserve Valtek Mark Series family of control valves and actuators to Safety Integrity Level (SIL) 3. The SIL certification, which is a measurement of the effectiveness of a safety system, extends to valves and actuators built in Flowserve’s Springville, Utah, and Bangalore, India, facilities. In obtaining the SIL 3 certification, Flowserve partnered with exida, a global supplier of functional safety products, services and certifications, which has performed more process control safety certifications than any other company worldwide. exida certified the product reliability, design and engineering processes for the Flowserve Valtek Series controls as SIL 3 capable per International Electrotechnical Commission (IEC) 61508. The valve actuators are capable of handling up to 150psig supply air and have the thrust to shut off against high-fluid pressures. The actuators are lighter, smaller and easier to handle than comparable diaphragm actuators.