Yantai Ciso Lubrication Technology Co., Ltd.

DU-C Hydraulic Change-Over Valves

DU-C are hydraulic change-over valves designed primarily for use in dual-line lubrication systems These change-over valves alternately discharge lubricant, fed by the pump into one of the two main lines The other line is connected to the return line connection of the pump The switching pressure is adjustable.

Technical Information of DU-C Hydraulic Change-Over Valves

Technical data

Function principle

change-over valve, hydraulic

Operating temperature

–20 to +80 ℃


grease up to NLGI 3,

oil with a viscosity of min 20 mm2/s

Operating pressure

max 35 Mpa, 5 075 psi

Change-over pressure

min 14 Mpa, max 35 Mpa,

Electrical connection

max 500 V, 25–60 Hz

Lubrication systemsdual line lubrication systems

Technical Drawing of DU-C Hydraulic Change-Over Valves

Technical Drawing of DU-C Hydraulic Change-Over Valves

Dimensions (mm)

Characteristics of DU-C Hydraulic Change-Over Valves

  • Reliable, even for hard grease

  • Change-over process initiated automatically once preset pressure is reached

  • Maximum operating pressure of 35 Mpa (5 076 psi)

  • Various mounting positions

  • Works effectively in temperatures ranging from –20 to +80 ℃

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