The Type 604/605 Pneumatically Actuated Dosing Valve from GF Piping Systems is designed and tested to surpass 2 million life cycles. It is corrosion-resistant, and with minimal metal parts, it provides a long, reliable life span. The 1/2-inch size valve is available in body materials PVC, CPVC, PROGEF Standard PP, and SYGEF Standard PVDF with a wide variety of end connections and custom assemblies. The valve is pressure rated at 90 psi unidirectional with operating temperatures ranging from 4 degrees below zero to 284 degrees F, depending on body material. Its threaded-bonnet design eliminates both the need for metallic body bolts and retorqueing after hot line shutdowns. Oversized pneumatic ports decrease cycle time to maintain accurate dosing with minimal overrun. 800-854-4090; www.gfps.com.