C em valve is electromagnetic. CEME Solenoid Valves

Solenoid valve SEME pilot action 2/2 way normally closed D25 G1 NBR~1x230V 50Hz art. 8556NN025S CEME

Art. 8556NN250SA57

Classification.


Provisions:
- 2- open - closed.




Operating principle:


Important settings.


Specifications:
Model: 8556NN020S D25 G1 NBR~1x230V 50Hz.


Type: normally closed.






Pipes inlet/outlet: 1”.
Flow characteristic KV: 9.6 m3 / h.

Weight:
Materials:
- Case: bronze.

Solenoid valve SEME pilot action 2/2 way normally closed D20 G3/4 NBR~1x230V 50Hz art. 8555NN020S CEME

Art. 8555NN200SA57

Solenoid valves Ceme (Italy) are used in water and heat supply networks, in various industries, in water treatment and air conditioning systems, in fountain installations.
Solenoid valves are installed on pipelines in almost any position (the coil down is an undesirable option) and, depending on the version, (normally closed or normally open) open or shut off the flow of the working medium when the supply voltage is applied to the valve coil.
As a control sensor that sends a signal to open or close the valve coil power circuit, a pressure switch, a float switch, various types of level control devices, a flow switch, a thermostat, and the like can be used.
Classification.
By the number of moves (channels connecting different circuits):
- 2 way - 2/: one input, one output.
- 3 way -3/: one inlet, one outlet and one air outlet, or three ways in various combinations.
Provisions:
- 2- open - closed.
- Adjustable position, some models.
Working conditions. This parameter indicates whether the valve is in the OPEN (with medium flow) or CLOSED (without medium flow) state. most time.
- N.C. Normally Closed: The valve is closed when there is no supply voltage at the coil terminals.
- N.O. Normally open: Conversely, under the conditions mentioned above, the valve is open.
Operating principle:
Depending on the value of the minimum cut-off pressure (equal to zero or greater than zero), valves are either direct-acting or servo-actuated.
- Direct acting: the fluid passage is opened or closed by means of a sealing piece mounted directly on the solenoid plunger controlled by a coil. The working pressure directly depends on the diameter of the hole and the power of the coil; while the minimum operating pressure is zero.
- With servomotor: there is a pilot and main port, an electromagnetic device opens and closes only the pilot port, so the maximum and minimum working pressures do not depend on the power of the coil, but only on design features sealing device of the main opening (diaphragm, piston, etc.). For of this type valve, the main characteristic is the minimum operating pressure, which is always non-zero and greater than zero.
Important settings.
Maximum Operating Differential Pressure (M.R.P.D.), the maximum pressure difference between valve inlet and outlet at which the solenoid can safely operate. If the outlet pressure is unknown, for the value of M.R.P.D. inlet pressure is taken.
The minimum operating differential pressure is the pressure required to open/close the valve and hold it in the open/closed position.
Specifications:
Model: 8555NN020S D20 G3/4 NBR~1x230V 50Hz.
Principle of operation: with a servo drive.
Number of moves: 2-way.
Type: normally closed.
Working medium: air, water, light oils.
Mounting position: any; a position with the coil down is not recommended.
Minimum operating differential pressure: 0.25 bar.
Maximum operating differential pressure (M.R.P.D.): 10 bar.
Temperature environment: 80°C; in devices direct current at temperatures above 40°C, performance characteristics(M.R.P.D.) may decrease.
Maximum temperature working environment: 90°C
Pipes inlet/outlet: 3/4”.
Flow characteristic KV: 5.7 m3 / h.
Coil supply voltage: ~1x230V 50Hz.
Weight:
Materials:
- Case: bronze.
- Seal: NBR, optional EPDM-FPM.
- Guide rod: stainless steel(has a metal seal with valve body for high temperature service).
- Internal details: stainless steel.

Solenoid valve SEME normally closed D15 G1/2 NBR~1x230V 50Hz pilot action 2/2 way art. 8554NN012S CEME

Art. 8554NN120SA57

Solenoid valves Ceme (Italy) are used in water and heat supply networks, in various industries, in water treatment and air conditioning systems, in fountain installations.
Solenoid valves are installed on pipelines in almost any position (the coil down is an undesirable option) and, depending on the version, (normally closed or normally open) open or shut off the flow of the working medium when the supply voltage is applied to the valve coil.
As a control sensor that sends a signal to open or close the valve coil power circuit, a pressure switch, a float switch, various types of level control devices, a flow switch, a thermostat, and the like can be used.
Classification.
By the number of moves (channels connecting different circuits):
- 2 way - 2/: one input, one output.
- 3 way -3/: one inlet, one outlet and one air outlet, or three ways in various combinations.
Provisions:
- 2- open - closed.
- Adjustable position, some models.
Working conditions. This parameter indicates whether the valve is in the OPEN (with medium flow) or CLOSED (without medium flow) state most of the time.
- N.C. Normally Closed: The valve is closed when there is no supply voltage at the coil terminals.
- N.O. Normally open: Conversely, under the conditions mentioned above, the valve is open.
Operating principle:
Depending on the value of the minimum cut-off pressure (equal to zero or greater than zero), valves are either direct-acting or servo-actuated.
- Direct acting: the fluid passage is opened or closed by means of a sealing piece mounted directly on the solenoid plunger controlled by a coil. The working pressure directly depends on the diameter of the hole and the power of the coil; while the minimum operating pressure is zero.
- With a servo drive: there is a pilot and main port, an electromagnetic device opens and closes only the pilot port, so the maximum and minimum operating pressures do not depend on the power of the coil, but only on the design features of the sealing device of the main port (diaphragm, piston, etc.) . For this type of valve, the main characteristic is the minimum operating pressure, which is always non-zero and greater than zero.
Important settings.
Maximum Operating Differential Pressure (M.R.P.D.), the maximum pressure difference between valve inlet and outlet at which the solenoid can safely operate. If the outlet pressure is unknown, for the value of M.R.P.D. inlet pressure is taken.
The minimum operating differential pressure is the pressure required to open/close the valve and hold it in the open/closed position.
Specifications:
Model: 8554NN012S 15 G1/2 NBR~1x230V 50Hz.
Principle of operation: with a servo drive.
Number of moves: 2-way.
Type: normally closed.
Working medium: air, water, light oils.
Mounting position: any; a position with the coil down is not recommended.
Minimum operating differential pressure: 0.25 bar.
Maximum operating differential pressure (M.R.P.D.): 10 bar.
Ambient temperature: 80°C; in DC applications at temperatures above 40°C, performance (M.R.P.D.) may decrease.
Maximum working environment temperature: 90°C
Pipes inlet/outlet: 1/2”.
Flow characteristic KV: 2.1 m3 / h.
Coil supply voltage: ~1x230V 50Hz.
Weight: 0.400 kg
Materials:
- Case: bronze.
- Seal: NBR, optional EPDM-FPM.
- Stem guide: stainless steel (metal sealed with valve body for high temperature service).
- Internal details: stainless steel.

Solenoid valve D25 G1" NBR~1x230V 50Hz 2/2 way normally closed art. 8416NN025S C57 CEME

Art. 8416NN250SC57

Solenoid valves Ceme (Italy) are used in water and heat supply networks, in various industries, in water treatment and air conditioning systems, in fountain installations.
Solenoid valves are installed on pipelines in almost any position (the coil down is an undesirable option) and, depending on the version, (normally closed or normally open) open or shut off the flow of the working medium when the supply voltage is applied to the valve coil.
As a control sensor that sends a signal to open or close the valve coil power circuit, a pressure switch, a float switch, various types of level control devices, a flow switch, a thermostat, and the like can be used.
Classification.
By the number of moves (channels connecting different circuits):
- 2 way - 2/: one input, one output.
- 3 way -3/: one inlet, one outlet and one air outlet, or three ways in various combinations.
Provisions:
- 2- open - closed.
- Adjustable position, some models.
Working conditions. This parameter indicates whether the valve is in the OPEN (with medium flow) or CLOSED (without medium flow) state most of the time.
- N.C. Normally Closed: The valve is closed when there is no supply voltage at the coil terminals.
- N.O. Normally open: Conversely, under the conditions mentioned above, the valve is open.
Operating principle:
Depending on the value of the minimum cut-off pressure (equal to zero or greater than zero), valves are either direct-acting or servo-actuated.
- Direct acting: the fluid passage is opened or closed by means of a sealing piece mounted directly on the solenoid plunger controlled by a coil. The working pressure directly depends on the diameter of the hole and the power of the coil; while the minimum operating pressure is zero.
- With a servo drive: there is a pilot and main port, an electromagnetic device opens and closes only the pilot port, so the maximum and minimum operating pressures do not depend on the power of the coil, but only on the design features of the sealing device of the main port (diaphragm, piston, etc.) . For this type of valve, the main characteristic is the minimum operating pressure, which is always non-zero and greater than zero.
Important settings.
Maximum Operating Differential Pressure (M.R.P.D.), the maximum pressure difference between valve inlet and outlet at which the solenoid can safely operate. If the outlet pressure is unknown, for the value of M.R.P.D. inlet pressure is taken.
The minimum operating differential pressure is the pressure required to open/close the valve and hold it in the open/closed position.
Specifications:
Model: 8416NN025S C57 D25 G1 NBR~1x230V 50Hz
Principle of operation: with a servo drive.
Number of moves: 2-way.
Type: normally closed.
Working medium: air, water, light oils.



Ambient temperature: 80°C; in DC applications at temperatures above 40°C, performance (M.R.P.D.) may decrease.
Maximum working environment temperature: 90°C
Pipes inlet/outlet: 1”.
Flow characteristic KV: 7.50 m3 / h.
Coil supply voltage: ~1x230V 50Hz.
Weight:
Materials:
- Case: bronze.
- Seal: NBR, optional EPDM-FPM.
- Stem guide: stainless steel (metal sealed with valve body for high temperature service).
- Internal details: stainless steel.

Solenoid valve D20 G3/4" NBR~1x230V 50Hz 2/2 way normally closed art. 8415NN020S C57 CEME

Art. 8415NN200SC57

Solenoid valves Ceme (Italy) are used in water and heat supply networks, in various industries, in water treatment and air conditioning systems, in fountain installations.
Solenoid valves are installed on pipelines in almost any position (the coil down is an undesirable option) and, depending on the version, (normally closed or normally open) open or shut off the flow of the working medium when the supply voltage is applied to the valve coil.
As a control sensor that sends a signal to open or close the valve coil power circuit, a pressure switch, a float switch, various types of level control devices, a flow switch, a thermostat, and the like can be used.
Classification.
By the number of moves (channels connecting different circuits):
- 2 way - 2/: one input, one output.
- 3 way -3/: one inlet, one outlet and one air outlet, or three ways in various combinations.
Provisions:
- 2- open - closed.
- Adjustable position, some models.
Working conditions. This parameter indicates whether the valve is in the OPEN (with medium flow) or CLOSED (without medium flow) state most of the time.
- N.C. Normally Closed: The valve is closed when there is no supply voltage at the coil terminals.
- N.O. Normally open: Conversely, under the conditions mentioned above, the valve is open.
Operating principle:
Depending on the value of the minimum cut-off pressure (equal to zero or greater than zero), valves are either direct-acting or servo-actuated.
- Direct acting: the fluid passage is opened or closed by means of a sealing piece mounted directly on the solenoid plunger controlled by a coil. The working pressure directly depends on the diameter of the hole and the power of the coil; while the minimum operating pressure is zero.
- With a servo drive: there is a pilot and main port, an electromagnetic device opens and closes only the pilot port, so the maximum and minimum operating pressures do not depend on the power of the coil, but only on the design features of the sealing device of the main port (diaphragm, piston, etc.) . For this type of valve, the main characteristic is the minimum operating pressure, which is always non-zero and greater than zero.
Important settings.
Maximum Operating Differential Pressure (M.R.P.D.), the maximum pressure difference between valve inlet and outlet at which the solenoid can safely operate. If the outlet pressure is unknown, for the value of M.R.P.D. inlet pressure is taken.
The minimum operating differential pressure is the pressure required to open/close the valve and hold it in the open/closed position.
Specifications:
Model: CEME8415NN020S D20 G3/4 NBR~1x230V 50Hz.
Principle of operation: with a servo drive.
Number of moves: 2-way.
Type: normally closed.
Working medium: air, water, light oils.
Mounting position: It is recommended to mount the valve with the coil in a vertical position. Models 8417, 8418, 8419 must be mounted in a horizontal position with the coil in a vertical position.
Minimum operating differential pressure: 0 bar.
Maximum operating differential pressure (M.R.P.D.): 4 bar.
Ambient temperature: 80°C; in DC applications at temperatures above 40°C, performance (M.R.P.D.) may decrease.
Maximum working environment temperature: 130°C
Pipes inlet/outlet: 3/4”.
Flow characteristic KV: 5.5 m3 / h.
Coil supply voltage: ~1x230V 50Hz.
Weight:
Materials:
- Case: bronze.
- Seal: NBR, optional EPDM-FPM.
- Stem guide: stainless steel (metal sealed with valve body for high temperature service).
- Internal details: stainless steel.

We use electromagnetic valves to close or open water. I never talked about these valves, because I thought that everything was clear to everyone. But some time ago, I was faced with the fact that this valve had to be serviced and, taking this opportunity, I decided to make a small post about them.

What is the difference between a solenoid valve and an electric valve and where is it better to put it? And in general, what for are they needed? And they are needed in order to sharply (quickly) open or close the flow of water or other liquid. Some valves can only work with water, some - with air and water. The fact that the valve works quickly is both good and bad. This is good where you need to dose something at low pressures: watering plants, plots, clean water after the filter. And it’s bad where the flow rate of water is high and due to its sharp opening / closing, a severe water hammer can occur.

That is, the place for such a valve is after the pressure reducers on the outgoing water lines. But to put it as the main inlet tap, so that it closes all the water in the apartment when the leakage protection is triggered, is not necessary. Because the valve is less reliable than a crane with an electric drive, and it will also arrange a water hammer. The motorized faucet will close slowly and pick up any debris and rust. But the same small weed can interfere with the operation of the valve, and it will be bad.

Just such a case happened to me and, using it, I decided to see what was inside the solenoid valve. It turned out that it is very easy to disassemble and maintain.

The most popular and easily purchased valves among the people are CEME valves. They are usually sold by the store http://forwater.ru/shop/125/180/, where everyone buys them. These valves are normally closed (this means that until current is applied, the valve is closed) and normally open (when current is applied, the valve closes). We will be interested in normally closed valves, because we want our entire system to not consume electricity until the water needs to be opened, and when it disappears, everything closes so that the water does not flow anywhere in vain.

Early models of these valves did not have a solenoid coil designed for long operating times. Somewhere in an hour of work, if no water flows through the valve and does not cool it, the coil gets very hot and I was scared to forget to turn off the light in the toilet (we are talking about an apartment in Moscow where I did it). Now (I bought the valve a year ago) this glitch has been fixed and the coil almost does not heat up at all. Most likely the manufacturer increased the number of turns of wire in the coil to reduce the current. This conjecture is confirmed by the fact that the new coil is one and a half times larger than the old one. Once I went to the dacha and forgot to turn off the light in the toilet for two days. The valve did not die and did not even get hot!

Where do I use these valves:

• In a hygienic shower. Here the task of the valve is to block the weak flow of water to the shower head. This is what they do when hygienic shower assembled without a special mixer built into the wall, which usually regulates the flow of water. Without a valve, the shower head will always be under water pressure, which is bad for it. And the people came up with the idea of ​​\u200b\u200bputting the valve parallel to the lighting of the toilet. Therefore, when we turn off the light in the toilet, the valve disconnects the shower head from pressure.
• In the water supply to the washing machine. In Moscow, she stands in the corner of the corridor, and earlier water was supplied to her by a long flexible eyeliner. Since it was scary that someday this eyeliner would explode, the water was closed to it with a tap. When I was redoing the plumbing, I replaced the plumbing with a pipe, and put a valve instead of a faucet. Next to the washing machine turned out to be a very convenient block: a socket and a switch. I wanted to wash it - I turned on the machine and immediately the switch. Washed - turned off.
• In the dosing of clean water after the filter. This is my mega-cheat! If you want, I will somehow drive to Moscow, take a picture and tell you about the automation of my bathroom. The idea is as follows: sick of forgetting that from under flow filter The kettle pours water slowly. Sometimes you leave to answer a couple of lines in ICQ - and the water is already on the countertop and on the floor.
  So I put such a valve at the filter outlet and made a time relay with two buttons. He pressed one - and the water is poured exactly as much as it is enough to fill the kettle (selected according to time). Press the second at any moment - and the water closes. Comfortable as hell!

So once with this system I had a glitch and arose. The water suddenly stopped closing by itself and began to dig in, and then flow in a thin stream. I thought, thought - and decided to disassemble the valve of this assembly. First, I removed the assembly itself (the valve, the John Guest fitting - the so-called fittings for thin tubes through which clean water flows, and the control valve) and unscrewed the coil from the valve.

And then he took the key and dismantled the valve. This valve works on the difference in water pressure. I didn't fully understand how it works, but I got the gist of it. A frail little electromagnet drives a piston that opens or closes small holes in the membrane.

If the hole is closed by a piston, then water passes through other holes and presses on the membrane from above, pressing it tightly and blocking the way out. And if the piston is opened, then water enters the valve outlet, its pressure is compared with the pressure under the membrane and there it does not prevent water from flowing to the valve outlet. That is, with the help of a small frail hole, we control a lot of pressure.

The valve opens very easily - it is necessary to unscrew only four screws. Under the top cover there is a small spring, which creates an initial pressure on the membrane and the membrane itself.

In my case, the valve damage was a small fragment of a cheap filter cartridge. Its body was split into several pieces, and the fragment reached the valve through a thin tube and prevented the membrane from tightly closing the valve outlet:

I was afraid that the membrane had broken, that the valve had already broken and that they would have to be replaced. In fact, these valves are good (if you use them correctly) and after I washed the membrane and cleaned it, everything worked and continues to work further. These valves have been serving me since the moment I launched my plumbing - since 2012.

Here is such a small reviewer turned out. That is, it is not necessary to use these valves to shut off large volumes of water at the entrance to the apartment; they can be used to control water flows at end points according to the “open-close” scheme.

Solenoid valves occupy a significant part of the company's product range. This Italian company produces more than 20 series of solenoid valves designed to control the flow of transported media of various aggregate states and varying degrees of aggressiveness.

Applications

The shut-off valves of this manufacturer can be mounted in the following systems transportation of liquid and gaseous media:

• Water and steam supply lines. And for water drinking quality special normally closed or open solenoid valves with DVGW type sealing and for steam with EPDM type sealing are required. Such fittings are suitable for iron, for washing machine, for a vacuum cleaner powered by a household electrical outlet (220 volts).
• Lines for the supply of petroleum products. At the same time, a special FPM sealant is required for diesel fuel or light oil. It protects normally open or closed valves from leakage of a chemically active environment that corrodes water gaskets from the first hour of operation. Therefore, solenoid valves for diesel are allocated in a special series.
• Gas supply lines. Only for gases of an inert type, almost any normally closed or open solenoid valves can be used, for example, suitable for water (can be technical). And for combustible media - propane and so on - you need a special gas fitting certified according to CEE 90 / 396. Standard water or steam valve not useful here. Moreover, for gas - fuel, a special coil is also needed, operating under a voltage of 12 volts or 24 volts. This voltage eliminates sparking.
• Coolant supply lines. In this case, normally open or open solenoid valves with an insert suitable for any type of low temperature liquid or gases other than ammonia are required. Moreover, the solenoid of such a valve should work even at 50-degree frost. Although for air conditioning or domestic refrigerators you can use fittings with less frost resistance.

Where to buy solenoid valves?

In Russia, you can buy CEME solenoid valves only from resellers or official representative offices of this brand.

Resellers offer a limited range, without subsequent purchase support. Moreover, their product may turn out to be a Chinese fake of an original product from Italy. In this case, it does not matter how much the product costs - its operation will cost the buyer much more than the initial expenses.

Official CEME dealers, such as our online store site, do not dump "to spite" competitors, but offer more substantial than low prices, Benefits.

What are the advantages of an online store website?

• Firstly, the site is the official distributor of Ceme. Therefore, we only sell original products.
• Secondly, in our store you can even buy specialized types of fittings. The store site offers a selection of products comparable to the official site, delivered directly from Italy.
• Thirdly, the site offers organized delivery goods in Moscow and all of Russia. Besides, delivery under the order to Belarus and Kazakhstan is possible also.

*On request, any CEME valves from the presented model range can be supplied.

Solenoid valves

Application

The solenoid valve from the Italian company "CEME" is used in heating and water supply networks, in air conditioning and water treatment systems, in industry and various agricultural production.

Description

Solenoid valves are installed in pipelines, and depending on whether they are closed or open, they block or open the flow for the working medium when the supply voltage is applied to the valve coil.
The signal control sensor for closing or opening the circuit can serve as various devices such as pressure switches, thermostats, flow switches, float switches and the like.

Installation and operation

In the pipeline, the valve can be installed in any position, but the working medium must move in the same direction as indicated by the arrow on the body. The best and best option location - this is the installation of the coil up. It is very important that foreign particles are not allowed to enter the valve area. This may have a negative impact.
In addition, the manufacturers indicate that the solenoid valve must not be used for other purposes. For example, you cannot mount it in designs that were not originally envisaged by the developers. It is also forbidden to use the valve in environments whose temperature is outside the permitted maximum and minimum. Since if it is used in an unforeseen temperature range, it may fail, resulting in an emergency.

Basic data

NBR is used as a material for the production of membranes. If other material is required, FPM-EPDM is available upon request.
The body is cast from brass. The internal parts are made of stainless steel.
The working environment can be a technical or drinking water, light oil products or air. As you can see, solenoid valves can be used almost anywhere.
The electrical connection is a P65 three-pin plug. It is included in the kit.

Solenoid valves normally closed, type 86

Solenoid valves normally open, type 87

The voltage is standard, i.e. AC~230 Volts and AC~24 Volts, with a frequency of 50 Hz.
If the client needs valves with coils designed for a frequency of 60 Hz or other voltage, then they will have to make an individual order.

Solenoid valves normally open

CEME solenoid valves

CEME solenoid valves (Italy) are used in water supply and heat supply networks, in various industries, in water treatment and air conditioning systems. According to their structure, they are divided into normally open- are in the open position when not energized and close when the coil is energized, and normally closed valves- are in the closed position in the absence of power and open when current is applied to the coil. CEME solenoid valves are installed in pipelines and open or shut off the flow of the working medium when the supply voltage is applied to the valve coil.
As a control sensor that sends a signal to open or close the power circuit of the CEME valve coil, the following can be used:

• pressure switch;
• float switch;
• various kinds of level control devices;
• flow switch;
• thermostat and the like.

Solenoid valves are installed on the pipeline in any position (the movement of the working medium must coincide with the arrow indicated on the body). The most preferred installation option is coil up. Do not allow foreign particles to enter the valves, as well as use it for other purposes.

Overall and connecting dimensions