Solenoid valve 5 inch dc24v main buyer country

When do I see a request?Solenoid valve 5 inch dc24v?, I immediately remember how five years ago many installers mistakenly installed them on main pipelines without taking into account eddy currents - then spent months dealing with false alarms. Nowadays, of course, it’s less common, but some suppliers are still trying to sell valves with copper winding under the guise of being “adapted to our networks,” although in fact they last for a maximum of two seasons when working with fertilizers.

Design nuances that are not written in passports

Let's take a typical case - a customer throughShandong Linyao Intelligent Agriculture Technology Co.,Ltdrequested a batch of valves for drip irrigation in the Krasnodar region. Does the technical specification indicate something banal?dc24v?, but no one specified the current ripple. I had to resolder the terminals on the spot, because the standard terminal blocks did not withstand surges above 28V - but here we are, stabilizers often save on transformers.

The material of the seals is a different story. For our agricultural holdings that use sulfate fertilizers, standard EPDM quickly wears out. We have to install Viton, although its resource is also not infinite - approximately 15,000 cycles against the stated 20,000. By the way, on the websitelyzhihuinongye.ruin the projects section there is just a case on replacing seals in Tatarstan - it describes in detail how they switched to custom Teflon gaskets.

A diameter of 5 inches is not just a number. In our latitudes, with seasonal pressure drops from 0.5 to 6 Bar, capacity reserves are often forgotten. I personally saw how in the Rostov region a valve with a nominal value of 150 m3/h in practice produced no more than 120 due to the installation curve of the valves. I had to redo the harness with 3/4 inch adapters.

Electrical parameters that distributors are silent about

Direct current 24V - it would seem that it could be simpler. But when you connect three such valves in parallel to one power supply, voltage sags begin. Especially in winter, at temperatures below -15°C, the solenoid winding loses up to 30% efficiency. Last year, in the Stavropol Territory, two greenhouse complexes froze because of this, although according to the passport everything should have worked.

This is where experience comes in handyShandong Lingyao Co.,Ltdon the design of intelligent systems - they always lay separate power lines for each valve with a power reserve of 25%. In their projects of high-quality agricultural fields, this is prescribed by strict technical regulations.

Polarity seems like a small thing, but how many times have I encountered burnt-out diodes! Russian electricians often confuse +/- when connecting, especially if the wiring is already old. We have to hang colored tags on each object, although the manufacturer could simply make asymmetrical connectors.

Real cases of adaptation to the Russian market

In the Voronezh region, the control scheme had to be completely changed - local networks experience drawdowns of up to 18V during peak hours. Standardsolenoid valvesthey just didn't open. The solution was found through frequency converters fromLingyao— We installed booster modules that raise the voltage to a stable 24V.

Another example: last month at a facility near Kazan we encountered electromagnetic interference from power lines. The valves would open spontaneously at night. I had to shield the cables and install ferrite rings - of course, such nuances are not written about in the equipment passport.

An interesting point about installation - many do not take into account the vibration from pumping stations. During prolonged operation, threaded connections become loose and leaks appear. We now always install locknuts with nylon inserts, although this increases the cost of the project by 7-10%.

Seasonal features of operation

Spring thaw is the main enemy of electromechanics. In the Belgorod region, for two years in a row, customers complained about plungers sticking. It turned out that condensation accumulates in the solenoid coil due to daily temperature changes. We had to develop hermetic casings with silicone seals - now this option is standardShandong Linyao Intelligent Agriculture Technology Co.,Ltd.

In summer there is another problem - overheating. At an air temperature of +35°C, the valve body heats up to +50°C in the sun. Thermal expansion leads to jamming of the rod. The solution is simple - a thermal shield made of aluminum foil, but who thinks about this during installation?

In the fall, problems with contact oxidation begin. Standard terminal blocks last 2-3 seasons, then they need to be replaced. We switched to gold-plated contacts - more expensive, but in three years there was not a single case of oxidation.

Prospects for modernization

Now we are testing a hybrid scheme -5 inch solenoid valvewith backup pneumatic drive. This is especially true for livestock farms, where power outages are critical. In projectsintelligent water and fertilizer integration equipmentLingyao already has such solutions - in the event of an emergency power outage, the valve switches to compressed air from the compressor.

Another promising direction is modular systems. Instead of one powerful valve, we install a cascade of three smaller ones. If one fails, the rest continue to work. For greenhouse farms, this is a salvation, because simple watering, even for an hour, ruins the crop.

I understand that many are still skeptical about “smart” people. systems, but practice shows that the costs of automation pay off in 2-3 seasons. The main thing is not to skimp on little things like high-quality connectors or stabilizers.