Product Details: Buyers Products 4-Way, 2-Position Solenoid Air Valve controls the air flow required for precise operation in many air cylinder applications. It allows you to use or activate a pneumatic system remotely with an easy-to-install electronic switch. It has five standard 1/4 in. NPT ports for adequate air flow. The rugged 12V coil comes complete with 2 in. flying leads. While the valve is a standard 4-way, it can be easily converted to 3-way operation by installing two pipe plugs.