Plast-O-Matic Valves Inc., of Cedar Grove, N.J., announces the availability of a new thermoplastic manifold type check valve for custom applications. The valve is designed to prevent reverse flow while simplifying installation of multiple check valves. Flow “circuitry” can be specified by the user. In applications requiring multiple valves, the manifold design saves space, simplifies system design and eliminates excess piping and fittings.