You can pick up the purchased product yourself or use the delivery service in Moscow and the Moscow region. By placing an order today, you will receive it at your disposal tomorrow. If necessary, you can use the prompt delivery service and receive your products today.

Delivery to the entrance (check with the manager about the possibility of lifting to the floor)

Delivery is made daily from 9 to 21 o'clock , including weekends and holidays.

Goods worth up to 6,000 rubles can be picked up by self-pickup.

Pickup points

For orders worth more than 6,000 rubles:

• Within the Moscow Ring Road - from 0 to 500 rubles, (individual delivery cost is indicated in the product card)
• Outside the Moscow Ring Road up to 10 km - 700 rubles,
• Beyond the Moscow Ring Road further 10 km - 700 rubles + 30 rubles for each kilometer.
• To the regions, delivery by a transport company (calculated individually).

Delivery cost for

km from MKAD

700 rub.

Unloading of large-sized goods is carried out by the efforts and means of the customer.

The money is transferred directly to the courier upon receipt of the goods. This method is the most popular among buyers due to the simplicity and convenience of calculation.

Payment by bank card to the courier upon receipt

Couriers have a portable banking terminal, which allows clients of the Teplovod-Service company to pay for goods with bank plastic cards (check with the manager about the possibility of paying by bank card).

Payment by credit card on the website

To select payment using a bank card, on the “Cart” page, you must select the “Payment by bank card on the site” item.

Payment is made through PJSC SBERBANK using Bank cards of the following payment systems:

After clicking on the “ONLINE PAYMENT” button, you will be redirected to the payment gateway of Sberbank of Russia OJSC to enter your card details.

Please prepare your plastic card in advance. Additionally, you need to enter your full name, email, contact phone number, and reservation number to identify the payer. The connection to the payment gateway and the transfer of information is carried out in a secure mode using the SSL encryption protocol.

If your bank supports the Verified By Visa or MasterCard Secure Code technology for secure online payments, you may also need to enter a special password to make a payment. You can check the methods and possibility of obtaining passwords for making online payments with the bank that issued the card.

This site supports 256-bit encryption. Confidentiality of the communication personal information provided by Sberbank of Russia OJSC. The entered information will not be provided to third parties except in cases provided for by law RF. Payments by bank cards are carried out in strict accordance with the requirements of Visa Int payment systems. and MasterCard Europe Sprl.

When paying by credit card, no interest is charged.

Payment is a transfer cash from the buyer's current account to the seller's account, we work on common system taxation including VAT. Delivery of goods is carried out after receipt of funds to the account of the company Teplovod-Service LLC. This method is used for calculations by legal entities.

Our details

Limited Liability Company "Teplovod-Service"

OGRN: 1105003006162

Taxpayer Identification Number: 5003088884

Checkpoint: 500301001

BIC: 044525225

Bank: PJSC “Sberbank of Russia”

R/s: 40702810838060011732

S/s: 30101810400000000225

Legal address: 142718, Moscow region, Leninsky district, Bulatnikovskoye rural settlement, Warsaw highway, 21 km., office B-6

Special conditions

For goods with the status "To order" worth up to RUB 100,000. no prepayment required.

For goods with the status "To order" over 100,000 rubles. An advance payment of 30% is required.

• For any item shipped transport company, 100% payment required.

Pressure switch PM/5-3W is made in Italy. Used to create automatic water supply systems both in the private sector and small industrial production. Has excellent performance characteristics and a number of innovations that make it possible to successfully use this device to control water pressure in the system.

Peculiarities
- Applicable for single-phase pumps.
- Long service life
- Durable plastic housing
- Availability of built-in pressure gauge
- The presence of three 1-inch leads allows you to connect a pump, a hydraulic accumulator and a water outlet line.

Specifications

• Mains voltage – 230 V, 50 Hz.
• Maximum power– 1500 W.
• The maximum switching current is 12A.
• Maximum operating pressure – 5 bar.
• The switching pressure control range is 1 - 2.5 bar.
• The shutdown pressure control range is 1.8 - 4.5 bar.
• Hydraulic connection – 1” female x 1” male x 1” male.

Connection diagram

This pressure switch is in great demand due to its high quality and a successful design - the ability to connect three fittings and the presence of a pressure gauge. Maximum effect operation of the device is achieved in the presence of a hydraulic accumulator. Which allows you to avoid sudden pressure changes.
We recommend using it to create automatic system water supply to your home or cottage.

How to buy a pressure switch PM/5-3W

You can buy a pressure switch by making a purchase directly on the online store website, or by calling the phone in the Contacts section. Our manager will contact you and arrange delivery or reserve the goods for pickup.

If you need a pressure switch in Moscow, delivery throughout the city and the nearest Moscow region is at your service. For buyers from other regions of Russia - delivery by any transport company or postal service as agreed.

Payment for goods is carried out in the following ways:

1.Payment in cash.

When picking up from the store, or when receiving the goods to the courier.

2.Bank transfer - payment according to the invoice issued for payment as for legal, and for physical persons

When placing an order, select the payment method: "Bank transfer".

After confirming the order, our specialist will contact you and after agreeing on all organizational issues, you will be sent an invoice email which you can pay at any bank or via an Internet client.

1.Pickup.

Pickup times and times:

PVZ m. Sokol: you can pick up your order the next day after ordering from 10 to 18 on weekdays. The order is stored at the point of issue for 3 working days.

Pickup cost:free when ordering over RUB 1,000. (for orders less than 1,000 rubles, the cost of pickup is 80 rubles.)

Attention! Only pre-reserved items are available at the order pick-up point!

The employee at the delivery point does not give any advice on goods!

Directions to the pick-up point are located on the page CONTACTS

2. Delivery in Moscow within the Moscow Ring Road

The following items are delivered free of charge:

Kerosene heaters trademark"Sengoku"

Delivery cost:

If your order weighs more than 20 kg, the manager will calculate and inform you of the additional delivery cost!

Delivery time:

Delivery is carried out on weekdays from 10:00 to 20:00.

For 30-90 minutes the courier calls you and agrees on the exact time of arrival.

Exact delivery address (city, street, house number, apartment or office number, intercom code)

Contact person

Contact numbers

3. Delivery beyond the Moscow Ring Road and further within the Moscow region

Delivery cost:

If the product card does not indicate WEIGHT, you can check it with the manager.

If your order weighs more than 20 kg, the manager will calculate and inform you of the additional delivery cost!

Delivery time:

Delivery is carried out within 1-3 working days from 10:00 to 20:00 without reference to half a day.

For 1-2 hours before delivery, the courier calls you and agrees on the exact time of arrival.

What is important to indicate when ordering:

Exact delivery address ( city, region, locality, street, house number, apartment or office number, intercom code)

Contact person

Contact numbers

4. Delivery to regions of the Russian Federation

We can send you goods from any of the companies listed below.

SDEK - www.cdek.ru

First Expedition Company (PEC) - www.pecom.ru

The estimated cost of delivery of goods can be found on the websites of these companies or contact our specialist.

What is important to indicate when ordering:

Series and passport number, date of issue

Last name, first name, patronymic

Receipt city

If none of the above methods suits you, we will send the goods to your address in another way - as agreed with you.

Good day. Let's look at the diagram for connecting a mechanical pressure switch PM /5 to the network and the pump. Let's look at the diagram first.

When you unscrew the top cover, you will see the following. First, a large screw with a spring for . It is indicated by a capital "P". Second, this is a small screw with a spring to adjust the difference in this parameter in the on and off mode. It is called "delta P". Next there are two terminals for connecting the electrical wire, called the word “motor”. Two – “line”. At the bottom there are two for grounding connections. This is what PM/5 looks like inside. The pressure switch is sold inexpensively in this Chinese store.

Connecting the pump to the network

How do we connect the pump to the pressure switch and the electrical network? Three wires come out of it different colors. Blue is a zero worker or simply “zero”. Brown – “phase”. Yellow-green – zero protective or simply “Earth”.

Now let's see how they will “enter” the relay and how to “exit” it. We insert all three wires through special hole in the case. Let's connect. Brown and blue in terminals labeled “motor”. Yellow-green to ground. Then we connect the same wires to the power plug. Brown and blue, respectively, from the “line” terminals (network). Yellow-green from grounding. Everything is ready. The pressure switch PM/5 is connected to the pump and to the network.

To find out which is stronger - a water hose, pipes or a pump, you can assemble a water supply system without a pressure switch. In all other cases, when supplying water to a house, a device is built into the system that replaces manually turning on and off the supply voltage of the deep-well pump.

It is impossible to imagine individual water supply at home without a relay that allows you to automatically turn off the pump as the water supply system fills with water and turn it on after the water is consumed.

Fig.1 Design pressure switch

Structurally, a standard pressure switch for controlling a pump looks like this. The plastic case contains terminal blocks for connecting the power cable and a mechanical device control system with adjustable spring struts; a 4-inch diameter pipe is located outside for connection to the water main. The power cable enters and exits the pressure switch through two wide inlets; the wires are clamped using a nut with a plastic ferrule.

In the normal state, the contacts are normally closed and the connected device powers the pump motor. When the pressure in the system increases, water affects rubber membrane with a piston installed at the inlet of the water pipe of the device. In turn, the membrane piston presses on a movable metal platform, hinged inside the device body at one point. The platform plate rises and opens the electrical contacts; when the pressure decreases, it returns to its original state, closing the contacts.

A screw with a spring and a nut is installed in the center of the device, which sets the distance of the contact plate to the membrane piston - if it is smaller, the device operates at lower pressure, an increased distance will require greater movement of the piston with the membrane to act on the contact pad, which is equivalent to increasing the pressure in the system.

At some distance from the main adjusting screw there is a second adjusting screw with a smaller spring. It specifies the range of movement of the contact metal platform, setting the difference between the pressure that turns on and turns off the contacts. Thus, the large adjusting screw sets the lower response threshold of the device (the pressure for turning it on), the small one regulates the range of operation of the device for shutdown (adjustment depth).

Rice. 2 Connection diagram

Relay adjustment

When purchased, the relay is configured for a specific switching mode, standard values ​​are 1.4 and 2.8 atm, that is, at 2.8 atm. the pump will be turned off and turned on if the pressure is less than 1.4 atm. Usually, when installing a device into a system, you need to select the response threshold - for this you need to know what pressure the pump in the well provides.

If the pressure well pump 2 atm., and the standard value of 2.8 atm. remains in the relay, then the pump will never turn off (it physically cannot create a pressure that reaches the response threshold) and after intensive work will go to eternal rest. A less tragic situation is when the pump can produce a pressure of 5 atm, and the relay turns it off at 2.8 atm. In this case, the system does not work efficiently and it is advisable to install a device that matches the pressure of the well water pump.

To take measurements when adjusting the relay, you need a pressure gauge; the work consists of the following steps.

• Water begins to be drained from the system, and the pump activation pressure is recorded on the pressure gauge.
• Close the taps and record the pressure gauge readings at which the pump turns off.
• Adjust the device with a large screw, periodically turning the water on and off until the desired lower pressure value is obtained.
• Then they move on to adjusting the range that sets the upper pressure with a small screw. The water is also periodically turned on and off until the required value is obtained.

Connecting the pressure switch to the water supply system

When installing a relay in a water intake system, the following rules must be observed.

Rice. 3 Connection diagram of a submersible pump to a hydraulic accumulator

• The hydraulic accumulator for water supply systems and the point of connection of the device to the water supply are located nearby - this will avoid switching the pump during sudden short-term pressure surges.
• When installing, please take into account temperature regime— some models operate only in warm conditions.
• To simplify installation, modern surface-type pumps are equipped with a fitting to which a relay and pressure gauge can be directly connected.

Connecting the pressure switch to submersible pump can be done in two ways:

1. The device is connected to water pipes through a tee using an adapter fitting.
2. Before connecting the hydraulic accumulator to the submersible pump, a five-pin fitting is connected to it, the connected devices (hydraulic accumulator, pressure gauge, relay) and the water main are connected at one point.

Review of popular models

There are two types of pressure switches: mechanical and electronic, the latter are much more expensive and are rarely used. Available on the market wide range devices from domestic and foreign manufacturers, facilitating the selection of the required model.

RDM-5 Gilex (15 USD) is the most popular high-quality model from a domestic manufacturer.

Fig.4 RDM-5

Characteristics

• range: 1.0 - 4.6 atm.;
• minimum difference: 1 atm.;
• operating current: maximum 10 A;
• protection class: IP 44;
• factory settings: 1.4 atm. and 2.8 atm.

Genebre 3781 1/4″ (10 cu) is a budget model made in Spain.

Rice. 5 Genebre 3781 1/4″

Characteristics

• body material: plastic;
• pressure: upper 10 atm;
• connection: threaded 1.4 inches;
• weight: 0.4 kg.

Italtecnica PM/5-3W (13 cu) is an inexpensive device from an Italian manufacturer with a built-in pressure gauge.

Rice. 6 Italtecnica PM/5-3W

Characteristics

• maximum current: 12A;
• working pressure: maximum 5 atm;
• lower: adjustment range 1 - 2.5 atm.;
• upper: range 1.8 - 4.5 atm.

Pressure switch - essential element in the water intake system, providing automatic individual water supply to the house. It is located next to the hydraulic accumulator, the operating mode is set using adjusting screws inside the housing.

When organizing a water supply system at home, you need not only a pump, but also automation to ensure its operation. One necessary devices- water pressure switch. This small device turns on the pump when the pressure in the system drops and turns it off when a threshold value is reached. The magnitude of the on and off parameters can be adjusted. How this device works, how to connect it and how to regulate it is in the article.

Purpose and device

In order to maintain constant pressure in the water supply system of a private house, two devices are needed - a hydraulic accumulator and a pressure switch. Both of these devices are connected to the pump through a pipeline - the pressure switch is located in the middle between the pump and the accumulator. Most often it is located in close proximity to this tank, but some models can be installed on the pump body (even submersible). Let's understand the purpose of these devices and how the system works.

A hydraulic accumulator is a container divided into two halves by an elastic bulb or membrane. In one there is air under some pressure, in the second water is pumped. The water pressure in the accumulator and the amount of water that can be pumped into it are regulated by the amount of pumped air. The more air there is, the higher the pressure is maintained in the system. But at the same time, less water can be pumped into the container. Usually it is possible to pump no more than half the volume into the container. That is, no more than 40-50 liters can be pumped into a 100-liter hydraulic accumulator.

For normal operation household appliances require a range of 1.4 atm - 2.8 atm. To maintain such a framework, a pressure switch is required. It has two response limits - upper and lower. When the lower limit is reached, the relay starts the pump, it pumps water into the accumulator, and the pressure in it (and in the system) increases. When the system pressure reaches the upper limit, the relay turns off the pump.

In a scheme with a hydraulic accumulator, water is consumed from the tank for some time. When enough has flowed out for the pressure to drop to the lower response threshold, the pump will turn on. This is how this system works.

Pressure switch device

This device consists of two parts - electrical and hydraulic. Electrical part- this is a group of contacts that closes and opens turning the pump on/off. The hydraulic part is a membrane that exerts pressure on the metal base and springs (large and small) with the help of which the pump on/off pressure can be changed.

The hydraulic outlet is located on the back of the relay. This could be a release from external thread or with an American type nut. The second option is more convenient during installation - in the first case, you either need to look for an adapter with a union nut of a suitable size or twist the device itself, screwing it onto the thread, but this is not always possible.

The electrical inputs are also located on the back of the case, and the terminal block itself, where the wires are connected, is hidden under the cover.

Types and varieties

There are two types of water pressure switches: mechanical and electronic. Mechanical ones are much cheaper and are usually preferred, while electronic ones are mainly delivered to order.

Name	Pressure adjustment limit	Factory settings	Manufacturer/country	Device protection class	Price
RDM-5 Gilex	1- 4.6 atm	1.4 - 2.8 atm	Gilex/Russia	IP 44	13-15$
Italtecnica PM/5G (m) 1/4"	1 - 5 atm	1.4 - 2.8 atm	Italy	IP 44	27-30$
Italtecnica RT/12 (m)	1 - 12 atm	5 - 7 atm	Italy	IP 44	27-30$
Grundfos (Condor) MDR 5-5	1.5 - 5 atm	2.8 - 4.1 atm	Germany	IP 54	55-75$
Italtecnica PM53W 1"	1.5 - 5 atm		Italy		7-11 $
Genebre 3781 1/4"	1 - 4 atm	0.4 - 2.8 atm	Spain		7-13$

The difference in prices in different stores can be more than significant. Although, as usual, when buying cheap copies, there is a risk of running into a fake.

Connecting the water pressure switch

The water pressure switch for the pump is connected to two systems at once: electricity and water supply. It is installed permanently, since there is no need to move the device.

Electrical part

To connect a pressure switch, a dedicated line is not required, but is desirable - there is a greater chance that the device will work longer. A cable with a solid copper core with a cross-section of at least 2.5 square meters must run from the shield. mm. It is advisable to install a combination of automatic + RCD or difavtomat. The parameters are selected based on current and depend more on the characteristics of the pump, since the water pressure switch consumes very little current. The circuit must have grounding - the combination of water and electricity creates a zone of increased danger.

Connection diagram of the water pressure switch to

The cables are inserted into special inputs on the back of the case. Under the cover there is a terminal block. It has three pairs of contacts:

• grounding - the corresponding conductors coming from the panel and from the pump are connected;
• line or “line” terminals - for connecting the phase and neutral wires from the panel;
• terminals for similar wires from the pump (usually on the block located above).

The connection is standard - the conductors are stripped of insulation, inserted into the connector, and tightened with a clamping bolt. By pulling the conductor, check whether it is securely clamped. After 30-60 minutes, the bolts can be tightened, since copper is soft material and the contact may weaken.

Pipeline connection

Eat different ways connecting the water pressure switch to plumbing system. Most convenient option- installation of a special adapter with all required outputs - a five-pin fitting. The same system can be assembled from other fittings, it’s just that it’s always easier to use a ready-made version.

It is screwed onto the pipe on the back of the housing; a hydraulic accumulator, a supply hose from the pump and a line that goes into the house are connected to the other outputs. You can also install a mud pan and a pressure gauge.

A pressure gauge is a necessary thing - to monitor the pressure in the system, monitor the relay settings. Mudman - too required device, but it can be installed separately on the pipeline from the pump. In general, a whole

With such a scheme high consumption water is supplied directly to the system - bypassing the hydraulic accumulator. It begins to fill after all the taps in the house are closed.

Adjusting the water pressure switch

Let's consider the process of adjusting the most popular model - RDM-5. It is produced by different factories. The adjustment limits vary, since different sized water pipes require different pressures. This device leaves the factory with a basic setting. Usually this is 1.4-1.5 atm - the lower threshold and 2.8-2.9 atm - the upper threshold. If you are not satisfied with some parameter, you can reconfigure it as required. This procedure is usually necessary when installing a Jacuzzi: the standard pressure of 2.5-2.9 atm is not enough for the required effect. In most other cases, reconfiguration is not required.

The RDM-5 water pressure switch has two springs, which regulate the threshold for turning off/on the pump. These springs differ in size and purpose:

• the larger one regulates the limits (upper and lower at once);
• a small one changes the delta - the gap between the upper and lower boundaries.

The parameters change when tightening or unscrewing the nuts on the springs. If you tighten the nuts, the pressure increases, if you loosen it, it decreases. There is no need to tightly tighten the nuts; one revolution is a change of about 0.6-0.8 atm, and this is usually a lot.

How to determine relay response thresholds

The pump activation threshold (and the lower pressure threshold on the water pressure switch) are related to the pressure in the air part of the accumulator - the minimum pressure in the system should be 0.1-0.2 atm higher. For example, if the pressure in the container is 1.4 atm, the shutdown threshold is desirable to be 1.6 atm. With these parameters, the tank membrane will last longer. But in order for the pump to work under normal conditions, look at its characteristics. It also has a lower pressure threshold. So, it should not be higher than the selected value (lower or equal). Based on these three parameters, you select the switching threshold.

By the way, the pressure in the accumulator must be checked before setting - there are significant deviations from the declared parameters. Under the removable cover (in different models it looks and is located in different places) the nipple is hidden. Through it you can connect a pressure gauge (can be a car one or the one you have) and see the actual pressure. By the way, it can be adjusted through the same nipple - increased or decreased if necessary.

The upper threshold—pump shutdown—is set automatically during adjustment. The relay in the initial state is set to some pressure difference (delta). This difference is usually 1.4-1.6 atm. So if you set the switch-on, for example, to 1.6 atm, the switch-off threshold will automatically be set to 3.0-3.2 atm (depending on the relay settings). If you need more high blood pressure(raise water to the second floor, for example, or the system has many water points), you can increase the shutdown threshold. But there are limitations:

• Parameters of the relay itself. The upper limit is fixed and in household models usually does not exceed 4 atm. It’s simply not possible to put up more.
• Upper limit of pump pressure. This parameter is also fixed and the pump must be turned off no less than 0.2-0.4 atm before the declared characteristics. For example, the upper pressure threshold of the pump is 3.8 atm, the shutdown threshold on the water pressure switch should be no higher than 3.6 atm. But in order for the pump to work for a long time and without overloads, it is better to make a larger difference - overloads have too bad an effect on the operating life.

That's all for choosing the water pressure switch settings. In practice, when setting up the system, you have to adjust the selected parameters in one direction or another, because you need to select everything so that all water points work normally, including household appliances. Therefore, it is often said that parameters are chosen using the “scientific poker” method.

Setting up a water pressure switch for a pump or pumping station

To set up the system, you will need a reliable pressure gauge, the readings of which you can trust. It is connected to the system near the pressure switch.

The adjustment process consists of tightening two springs: large and small. If you need to raise or lower the lower threshold (pump activation), turn the nut on the large spring. If you turn it clockwise, the pressure rises, if you turn it counterclockwise, it decreases. Turn it a very small amount - half a turn or so.

The sequence of actions is as follows:

• The system is started, and the pressure gauge is used to monitor at what pressure the pump turned on and off.
• The large spring is pressed or released.
• Turn it on and check the parameters (at what pressure it turned on, at what pressure it turned off). Both quantities are shifted by the same amount.
• If necessary, adjustments are made (the large spring is adjusted again).
• After the lower threshold is set the way you want it to be, proceed to adjusting the pump shutdown threshold. To do this, press or lower a small spring. Don’t twist the nut too much either—half a turn is usually enough.
• Turn the system back on and look at the results. If everything suits you, they stop there.

What else do you need to know about adjusting the water pressure switch? That not all models have the ability to change the delta, so look carefully when purchasing. There is a pressure switch for the pump in a moisture- and dust-proof housing. They can be installed in a pit; some models can be installed directly on the pump body, if it has such an outlet.

Some water pressure relays also have an idle (dry) relay; in general, this device is in a separate housing, but there are also combined ones. Protection from idle speed It is necessary so that the pump does not break if suddenly there is no water in the well or borehole. Some pumps have built-in protection of this type; for others, relays are purchased and installed separately.