Denis de Ploeg can inform you that The Lee Company has developed a Reduced Diameter Solenoid Valve which has a maximum outside diameter of 0.550” (14mm) which is the same as an AA battery. In order to maintain the same power delivered by the coil, the length of the coil has been increased to 68mm. The solenoid valve is a single coil, 3 way, Normally Closed device, capable of operating up to 5,000psid at a maximum voltage of 32vdc and typically flowing 0.12USGPM at 200psid but could easily be designed as a Normally Open version. Typically these would be fitted into the annulus of a completion tool in an oil well where there is limited space available.
