MW Type Multiposition Valves provide a variety of flow configurations, port and fitting sizes and actuation options. Pre-load design allows rotor to be inspected or replaced without removing the valve from the actuator. Valves are available with 4-16 positions, in five configurations ranging from simple stream selection to more complicated trapping functions. Standard valve body material is stainless steel with optional materials such as Hastelloy C-22 or Nitronic 50 available. Valco Instruments Co. Inc. Box 55603 Houston, TX, 77255