Solenoid valve 4 inch dc24v

When you hear about a 4-inch 24V solenoid valve, the first thing that comes to mind is irrigation main lines. But many people mistakenly take it for high-pressure systems, not taking into account that the electromagnetic drive does not always cope with sudden jumps of up to 10 atmospheres. We just encountered this on a project in the Krasnodar Territory - we had to redo the piping by adding a gearbox.

Design features and typical errors

Structurally, a 4-inch valve is not just an enlarged copy of a two-inch valve. What is important here is the ratio of the cross-section and power of the coil. If forsolenoid valve 4 inch dc24vinstall a standard coil from a 2-inch model - it will operate with a delay of up to 3-4 seconds. This is critical in drip irrigation systems.

I noticed that some manufacturers save on case material. It seems to be the same brass, but when opened you can see that the walls are thinner. After two seasons in saline soil, such a valve begins to leak around the stem. This is especially true for cheap Turkish analogues.

By the way, aboutdc24v- this voltage was chosen for a reason. In field conditions, 24V is safer than 220V, and it’s easier to select a stabilizer. But if the power line is longer than 50 meters, it is better to install an additional signal amplifier. Tested on a vegetable storage project near Voronezh, where the valves were located within a radius of 200 meters from the controller.

Selection of equipment for specific tasks

For main pipelines with a diameter of 110 mm we take4" solenoid valvewith a throughput capacity of at least 25 m3/hour. Anything less will create unnecessary resistance and the pump will wear out.

This is where the experience of colleagues fromShandong Linyao Intelligent Agriculture Technology Co.,Ltd— they just focus on individual design. On their website https://www.lyzhihuinongye.ru there are examples where valves were selected for non-standard flow rates - for multi-tier greenhouses with different water consumption tiers.

An important nuance is the direction of flow. Some models only work in one direction, and when installed back they fail within a season. I always look at the arrow on the body during installation, although it would seem elementary.

Power problems and their solutions

Cdc24vThere is a subtlety: with a long power line, the voltage drop can reach 2-3V. The valve seems to work, but not completely - then we wonder why the irrigation section does not turn off. Now we always measure the voltage directly at the valve terminals.

Another story: in Crimea they installed valves with IP68 protection, but did not take into account that condensation accumulates in the installation box. After an overnight temperature change, the coils failed. I had to add silica gel cartridges - a small thing, but it works.

For facilities where power is often cut off, I recommend valves with a mechanical backup. You can manually close a section without stopping the entire system. Such solutions are usedShandong Lingyao Co.,Ltdin their projects of smart agricultural parks - where reliability is more important than savings.

Field installation and maintenance

When installing a 4-inch valve, the support is often forgotten. The weight is about 8 kg, plus the vibration from the pump - after a month the flanges begin to leak. Now we always install an additional bracket, especially at highway turns.

Maintenance is simple: once a season we check the cleanliness of the filter (always place it before the valve), look at the condition of the diaphragm. But there is a nuance - after winter storage, it is better to do the first starts at reduced pressure, otherwise the rubber of the diaphragm may tear.

There was an interesting case in the Rostov region - there birds pecked out the sealing rings at the ends of the valves. I had to cover it with galvanized casings. It’s a small thing, but without it work stops.

Integration into automation systems

Modern controllers usually have discrete 24V outputs, so with connectionsolenoid valve dc24vno problem. But if we use old Soviet switchboards, it is better to install an intermediate relay. Direct connections to contactors sometimes cause interference.

In projectsintelligent water and fertilizer integration equipmentIt is important to consider valve response time. For fertigation, we take models with a response time of no more than 1.5 seconds - otherwise the dosage of fertilizers will be lost.

We are now experimenting with valves that can operate in pulse mode for precise dosing of water in experimental greenhouses. So far, the results are encouraging, but the cost of such solutions is still high for mass use.

Prospects and notes on manufacturers

Among the new products, I’m looking at valves with stepper control - they allow you to smoothly regulate the flow, and not just open/close. For variable flow systems this could be a breakthrough.

Among the manufacturers, I consider Italian brands to be reliable, but their price is 2-3 times higher. Chinese analogues have become better, but there is still a risk of getting a batch with low-quality springs. Russian manufacturers still lag behind in the precision of valve seat manufacturing.

CompanyShandong Linyao Intelligent Agriculture Technology Co.,Ltdin this regard, it is interesting in that it places an emphasis on adapting equipment to specific conditions - for example, for water with a high iron content or for working under conditions of temperature changes.

Overall, a 4-inch solenoid valve is a reliable solution if selected and installed correctly. The main thing is not to skimp on little things like high-quality connectors and voltage stabilizers.