DU 1 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.
DU 1
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Typical Applications
Ideal for small, electrically driven dual-line systems that
requires minimal monitoring.
Features and Benefits
• Reliable, even for hard grease
• Change-over process initiated automatically once preset pressure is reached
• Maximum operating pressure of 350 bar (5,076 psi)
• Various mounting positions
• Works effectively in temperatures ranging
from -20°C to 80 °C (- 4°F to 176 °F)
Technical Data
EDW End-of-line Pressure
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EDW end-of-line pressure switches are key components in a dual-line lubrication system. Designed to monitor the system, these switches detect the pressure at the end of the respective main line and start the change-over procedure. If the pressure at the end of the line is not reached within a specific period of time, a fault signal will be generated at the electronic control unit.
Typical Applications
Large dual-line systems / Steel mills / Cement plants /
Minerals and mining
Features and Benefits
• Controls proper functioning of the pump and change-over unit
• Monitors for leaks in the tube line system
• Available with limit switches or with electronic pressure switches with LED display
• Proven, rigid design for tough conditions
Technical Data
Monitoring Devices
A range of devices capable of generating visual or electronic signals can be modified for use in monitoring device. These signals are evaluated by electronic control and monitoring systems, which then relay the necessary information to the machine's control unit or the operator.
Protecfire Engineering Pte Ltd
11 Changi North Street 1
#03-08 Singapore 498823
Tel. +65 62445880
E-Mail: sales@protecfire.com.sg
Protecfire GmbH
Headquarters & Factory
Weidekamp 10 D-23558
Lübeck - Germany
Protecfire (Langfang)
Fire Systems Technology Co., Ltd.
Building 8. Satellite Navigation Industrial Park
Guan Xinxing Industrial Park, Langfang City
Hebei Province China 065500
Tel . +86 316 5929119
Fax . +86 316 5922569
Email: sales@protecfirechina.cn
