Hangzhou Darhor Technology  Co., Limited
Products Category
Contact Us

Name: Andy dudu

What's New
    aid earthquake relief i...  
    On May 2010, communicati...  
    On December 10th, 2011, ...  
    Water treatment industry... 
    Sales department partici... 

Darhor Solenoid Valves


What's is the solenoid valve
The solenoid is an electromagnetic part of a valve, comprised of a coil, coretube, core and enclosure. Darhor' Vdarhor brand offers the worlds largest selection of 2-, 3- and 4-way solenoid valves, designed to handle the most demanding fluid control applications.

2-way. One inlet and one outlet, and are used to permit and shut off fluid flow. The two types of operations are “Normally Closed” and “Normally Open”.
3-way.These valves have three pipe connections and two orifices. When one orifice is open, the other is closed and vice versa. They're commonly used to alternately apply pressure to and exhaust pressure from a valve actuator or a single acting cylinder. These valves can be normally closed, normally open or universal.

Solenoid valve failures and exclusion

When the solenoid valve is energized but does not work


Check the supply wiring is bad

connect wiring again and the connector is connect

Check whether the power supply voltage in the range of it

to the normal working range

The coil is seal off

welding again

The coil short coil short circuit

change coil

Working pressure is not appropriate

adjust the pressure different/or change 
commensurate solenoid valve

The fluid of high temperature

change commensurate solenoid valve

The impurities make main valve and moving core no work

clearing, for example, a damaged seal 
should change the seal and install filter

The liquid viscosity is too large. the frequent is 
too high and life has been came

change product


Solenoid valve can not be turn off

The main valve or iron core seal is damaged

change seal

Fluid temperature/viscosity is too high

change counterpart solenoid valve

The imparities entering the solenoid valve main valve core or iron core


Spring life has been come or deformation


The orifice and the balance hole are block



The working frequent is too high or life has been came

re-election or change product


 Other circumstance 

Internal leakage

check whether seal is damage, spring is poor assembly

External leakage


seal loose or broken/to fastening screw or change seal 

Power noise


chief fasteners loose tighten voltage fluctuation is not in 
the allowed range, adjust the voltage.the iron core suction surface haveimpurities or imbalance, please timely cleaning or change

简体中文     繁体中文     German     Spanish     French     Italian     Portuguese     Japanese     Korean     Arabic     Russian