Amazon.com: Parker S Series Two-Position Selector Valve: Parker No. S-50, 20 GPM, 3000 PSI with 1/2" NPT Port Size, Pressure Balanced Spool and Chrome Plated : Industrial & Scientific
Parker Hannifin PS401165CCP Bottom/End Ported Manifold Base for Isys ISO Series Plug-in Size H1 Valve, Double Solenoid, Terminal Strip in Base, 3/8 Inch NPT Port Size: Amazon.com: Industrial & Scientific
Adamation Parker HOT Water Solenoid Valve 55-7300-440: Industrial Solenoid Valves: Amazon.com: Industrial & Scientific