W.E. Anderson™ Automated and Manual Valve Products Dwyer Instruments, Inc. produces a broad line of competitively priced valves and valve control products under its W.E. Anderson™ brand, which manufactures various products including: globe, butterfly, ball, manifold, actuators, and solenoid valves. Within each valve type W.E. Anderson™ offers many different options so that you can select the proper valve to meet your specific application needs. To complete your valve automation package W.E. Anderson™ also offers: valve position indicators, valve positioners, and electric or manual pneumatic actuators. Browse and shop online, or call and speak to a member of our expert, valve support team at 1-844-372-5551. Angle Seat Ball Butterfly Check Diaphragm Pulse Electro-Pneumatic Globe Manifold Needle Self Acting Temperature Control Solenoid Strainer Zone Knowledge is Power Get some expert advice for making the best technical and economic selection for your valve automation application. This quick overview covers the basics of Control Valve Actuator Sizing and Valve Action Selection.