Solenoid valve 2" pulse

If we take 2-inch pulse models, many people mistakenly believe that they are universal for any drip irrigation systems. In practice, the operating pressure range and housing material are often more critical than the type of control.

Design Features of 2" Solenoid Valves

This onesolenoid valve 2" pulseWe installed it from Shandong Lingyao last season on the main pipeline - I immediately noticed that the brass body with a protective coating really holds hard water better than some Turkish analogues. Although at first I doubted whether there would be problems with pulse control with frequent switching cycles.

The pulse coil here does not work like a regular solenoid - it gives a short impulse to open/close, rather than a constant voltage. This reduces power consumption, but requires a stable voltage. Once I had to change the power supply at a facility near Voronezh - there power surges caused false alarms.

An EPDM diaphragm lock assembly is standard, but in the 2-inch version it is important to check the spring force to close. Once I encountered the fact that at a pressure below 0.3 bar the valve simply did not open - I had to install an additional regulator.

Application in irrigation automation systems

In the projects of Shandong Linyao Intelligent Agriculture Technology LLC, such valves are usually coupled with their own controllers - compatibility with the control protocol has been worked out well. Although on old objects sometimes there are response delays - apparently due to the difference in pulse durations.

For large areas (from 5 hectares) a 2-inch throughput is justified, but hydraulic losses must be taken into account - if the line length is more than 200 meters, we install two valves in parallel. By the way, on the website https://www.lyzhihuinongye.ru there is a diagram of such a connection - however, without indicating the installation nuances.

In smart greenhouse complexes, pulse control benefits from accuracy - you can set watering in seconds. But here it is important to monitor the cleanliness of the water - any sand will damage the valve seat in 2-3 weeks.

Typical installation and operation errors

The most common problem is installation without a mud trap in front of the valve. The manufacturer seems to indicate this in the documentation, but many installers neglect it - then they wonder whypulse solenoid valveDoesn't hold pressure.

Another point is the direction of flow. Some 'specialists' manage to put it against the arrow on the body - after this the valve works, but with increased noise and rapid wear of the membrane.

Winter preservation is a separate topic. If the system is not purged, the remaining water in the valve chamber freezes and tears the brass body. A costly mistake – proven through bitter experience in the Krasnodar region.

Comparison with alternative solutions

We tried to install motor valves on the same objects - yes, they regulate the flow more smoothly, but at the same time they are more difficult to repair and more sensitive to voltage changes. For most drip irrigation applications, a pulse solenoid is more reliable.

Conventional solenoid valves (not pulse valves) consume 3-4 times more energy - this is critical for remote fields with self-powered power. Although they are cheaper to purchase, the difference in price pays off over the season due to savings on electricity.

Hydraulic valves are a different story. They do not require electricity, but do require a separate control piping. For large objects, this complicates the scheme - pulsed electromagnetic ones are easier to integrate with a general automation system.

Prospects for technology development

Judging by the developments of Shandong Lingyao, in the coming years we can expect the emergence of hybrid solutions - where pulse control is combined with flow sensors. This will allow you to automatically adjust the operation of the valve when the pressure in the system changes.

Materials are also improving - test samples with a ceramic shut-off unit show three times longer service life when working with hard water. However, the cost of such valves is still high for mass use.

Integration with IoT platforms - their equipment already allows you to remotely change pulse settings via a mobile application. But in practice, communication stability in rural areas remains a problem - sometimes it is easier to use a local controller.

Overall,2 inches pulsethe valve remains the optimal choice for modern irrigation systems - subject to proper selection and installation. The main thing is not to skimp on filtering and voltage stabilization.