The DR4 is an hydraulically operated directional control valve for use with dualine loop or non-return systems.
Versatile application as pneumatically controlled 3/2-way valve, 2/2-way valve, directional control valve with pressure controlling and pressure relief valve. Usable for all types of lubricating systems but particularly suited...
The pressure relief valve is preferably used as safety valve to protect central lubrication systems from overpressure. It is suitable especially in total-loss systems.
For hydraulic systems, particularly dual-line centralized systems. For use SA-H as 3/2-way cock close both the outlets B.
[Translate to French:] For hydraulic systems, particularly dual-line centralized systems. For use SA-V as 3/2-way valve close outlet B.