Hayward Flow Control’s thermoplastic fluid handling products can be used in the harshest chemical feed environments. The complete family of solutions includes solenoid diaphragm metering pumps, pressure relief and back pressure valves, calibration cylinders and columns, corporation stops and injection valves and quills. They are easy to install and can help keep systems working with years of maintenance-free service. 336/712-9900; www.haywardflowcontrol.com.