Cedar Grove, N.J.-based Plast-O-Matic Valves Inc. announces the availability of a pneumatically operated Teflon diaphragm valve with spigot connections for high purity applications. Series BSD has no metals or elastometers in contact with the process liquid. Weighing as little as five ounces, the BSD permits inlet pressures up to 100 psi and back pressures to 25 psi. It can be mounted in any direction, and provides a bubble-tight shut off in the event of an air line failure.