... structure,no escape and universal. DF20 Multi-way valve,which is characteristic of compact structure,no ... safely under the highest working pressure.This multi-way directional valves is mainly used for hydraulic ... working cavity back flowing to P cavity,one-way valve is installed inside each reversing coupler, ... and outline view of DF20 coupler-6 multi-way valve [model:DF20AAA440/DAO3/DAO3/DAO3/DAO3/ ...