Welcome, Huatui Group

HUATUI

Integrity Quality
NEWS
  • New Arrival ! Solenoid Valve For Caterpillar--KEYOPO
  • New Arrival ! Solenoid Valve For Caterpillar--KEYOPO
  • New Arrival ! Solenoid Valve For Komatsu--KEYOPO
  • New Arrival ! Solenoid Valve For BWM--KEYOPO
  • New Arrival ! Sensor For Komatsu--ROHOPE
  • Happy New Year!
  • New Arrival ! Solenoid Valve For Komatsu--KEYOPO
  • KEYOPO/RPHOPE Wish you a Merry Christmas!
  • Engine Starter Repair: How To Replace The Starter Solenoid
  • Common Bad Speed Sensor Symptoms
  • New Arrival ! Solenoid Valve For Caterpillar--KEYOPO
  • Advantages Of Solenoid Valves——KEYOPO
  • How To Test A Solenoid Valve?
  • Common Bad Fuel Pressure Sensor Symptoms
  • How Solenoid Valves Function?
  • How The Engine Speed Sensor Works?
  • Step-by-step solenoid valve maintenance!
  • KEYOPO/ROHOPE at Solutrans 2019.
  • How to Replace a Vehicle Speed Sensor?
  • Repair or replace solenoid?
  • How Do You Test an Oil Pressure Sensor?
  • 2019  Aapex , Booth number 9408.
  • Industry News Info--solenoid
  • Industry News Info--sensor
  • How To Choose The Solenoid?
  • Why Do You Need To Replace A Bad Speed Sensor?
  • Major Challenges Of The Global Solenoid Valves Market
  • Global Solenoid Valves Market: Industry Analysis
  • 4 Common Starter Solenoid Problems
  • How to replace a Vehicle Speed Sensor?
  • Celebrate Chinese National Day!
  • The sensitivity of the Sensor
  • Solenoid Valve maintenance
  • Test the Pressure Sensor with a Multimeter
  • The Top 4 Symptoms Of A Faulty Speed Sensor
  • Happy Mid-Autumn Festival!—HUATUI
  • Symptoms Of A Bad Oil Pressure Switch Or Sensor
  • Common Solenoid Valve Problems
  • Holiday Announcement of 2018 Spring Festival
  • Holiday Announcement of 2018 Spring Festival
How To Test A Solenoid Valve?
Source: | Author:pmo0bc605 | Publish time: 2019-12-16 | 589 Views | Share:

Here are some common problems that can occur with these parts.

1.
Valves Do Not Open

Solenoid valves may not open because of power failure, uneven pressure, wrong voltage, dirt under the diaphragm, corrosion, missing components, or a coil burn out. However, since there are so many causes, you must try to narrow down the problem in order to fix it. The most important parts that you must assess in this process are the valve diaphragm, diaphragm spring, coil power, flow control adjustment, valve inlet port, solenoid outlet port, and the valve bleed port.

2.
Valves Partly Close

Valves can also fail to close at times. This can be due to a manual override, pressure difference, residual coil power, damaged armature tube, inverted or damaged valve seats, and some missing components. Be sure you thoroughly check your wiring, lead connections, components, and diaphragm to see what the specific issue is. You can also try to lift the coil slightly to check if an electromagnetic field is present. If ever you have an inverted diaphragm, it would be wise to refit the item correctly before replacing it with a new one.

3.
Erratic Valve Sounds

Every time a valve closes or opens up, you may hear a disturbing hammering sound, or in other cases, there can be a buzzing sound heard upon the operation of solenoid valves. These errant valve sounds can be due to the difference in the inlet or outlet pressure inside the system. Water hammering upon valve opening can be due to high liquid pressure traveling through a small pipe bore. Installation of a T-piece pipe before the air can help dampen the noise and reduce the impact. You may also increase the dimensions of your pipe to reduce the speed of your liquid components. Increasing pipe size would be a nice way to reduce inlet pressure on the valves as well.

4.
Coil Problems

The coil may be burned, melted, or can stay cold even with power on. These coil problems can be caused by short circuit, slow coil armature, wrong voltage, and high media (gases, liquids, etc) temperatures.

To avoid erroneous voltage supply, be sure to check the compatibility of your coil with the power supply. Check for moisture within and replace if necessary. Replace any damaged or bent armatures as well, and check media compatibility with your valve. Don’t forget to move solenoid valves into cooler areas or you may increase ventilation around valves and coil.