Compact press-regulating valves withstand harsh fluids
GF Piping Systems
This family of pressure-regulating valves (PRVs; photo) features compact size, modular design and highly chemical-resistant plastic construction with no exposed metal parts. Offered in two models, the pressure-reducing Type 582 valve is designed to maintain constant outlet pressure, while the pressure-retaining Type 586 valve is designed to maintain constant inlet pressure. Both are well-suited to function reliabilty in the face of aggressive chemical process conditions, says the manufacturer. Available in sizes from 3/8 to 2 in., standards include ISO 9393 for tighness and EN 1266 for leak rating. — GF Piping Systems, Irvine, Calif.