Переключающий клапан DU 1

Changeover valve DU 1

For dual-line lubrication systems

Electric, pneumatic, or hydraulic DU 1 changeover valves are primarily designed for dual-line lubrication systems. These changeover valves alternately direct the lubricant flowing from the pump into one of the two main lines. The other line is connected to the pump's return line. The changeover pressure is adjustable.

Technical characteristics and advantages

  • Ideal for thick plastic grease
  • Automatic switching after reaching the preset pressure
  • Maximum working pressure 350 bar (5076 psi)
  • Various mounting positions
  • Efficient operation at temperatures from -20 to +80 °C (from -4 to +176 °F)

Application areas

  • Ideal for small, dual-line electrically driven systems with minimal monitoring requirements

Documentation

Product catalog (4.3 MB)
Category:

Description

Technical specifications
Operating principle changeover valve, hydraulic, pressure-operated 4/2-way valves
Operating temperature from −20 to +80 °C from -4 to +176 °F
Lubricant plastic grease up to and including NLGI class 3
oil with a viscosity of at least 20 mm²/s
Consumption 14 dm³/h 3.7 gal/h
Working pressure max 350 bar max 5075 psi
Switching pressure min. 140 bar min. 2030 psi
max 350 bar max 5075 psi
Connection of the main pipeline internal thread G 1/2 BSPP
Electrical connection max 500 V, 25–60 Hz
Protection class IP 67
Dimensions depending on the model
min. 195 x 190 x 100 mm 7.8 x 7.8 x 4.0 inches
Max. 195 x 195 x 195 mm 7.8 x 7.8 x 7.8 inches
Installation position any
Switching valves DU 1 with mounting on a support panel
Part number Designation Description
617-28683-1 DU1–G —
617-28619-1 DU1–GK with indicator pin
617-36148-9 DU1–GKN with a contactless switch
617-28620-1 DU1–GKS with indicator pin and limit switch

Configure the product, download the CAD file

Related products