Corrosion-Resistant Flow Controls

Plast-O-Matic Valves (Cedar Grove, NJ, www.plastomatic.com) offers a low-cost flow control valve in natural polypropylene, PVC, and other rugged thermoplastics to maintain a constant, pre-determined flow in a piping system. Flow rates from 0.25 gallon per minute to 120 GPM can be maintained to within 10% accuracy with varying inlet pressures from 15 to 120 psi. Ideal for highly corrosive or ultra-pure liquids, the valve is pre-set and tamper-proof, and requires no electrical connection or electronic control.