Description
When a minimum pilot pressure is applied to port PIL, flow passes from 2 to 1. When the pressure at 1 exceeds the pressure setting (defined by pilot pressure times pilot ratio), the valve acts to restrict flow at 2. This increases the pressure drop through the valve and maintains consistent pressure at 1. Additionally, if pressure at 1 rises above the pressure setting, flow is relieved to 3 until the setting is re-attained.
¹) 1 - 3 to 80% of pressure setting
