Flowserve Flow Control is the foremost valve and control manufacturing organization in the world. Flowserve's broad offering of flow control products includes many of the most widely known and trusted brand names in the marketplace.   Masoneilan provides customers with the highest quality products and services through unmatched creativity and commitment to excellence. Masoneilan products include process control valves, actuators, instruments, and associated software solutions. Products and services are provided globally with manufacturing plants and sales offices located worldwide.                                                                           The Chemline Characterized Control Valves provide extremely precise flow control of aggressive fluids. Valves flow characteristics (Cv vs. lift) follow theoretical linear or equal percentage curves through the entire range of extremely low to high end of stem travel.