Ark Electric & Mechanical Co., Ltd.

How to Improve the Performance of the Dosing Pump?(2021年09月09日)

newdosepump — 2021-09-01T12:30:48+0900

https://www.newdosepump.com/

After dosing pump works, the flow loss at the outlet end of the pipeline is related to the flow, length, diameter, pipe material, type and quantity of the dosing pump pipeline accessories, and the installation quality of the pipeline of the dosing pump and other factors. The following methods can be adopted to increase the pipeline power of the dosing pump.

1. The relationship between pipe diameter and cost of dosing pump

In the construction and transformation of medium and small pumping stations, the cost of dosing pump pipelines accounts for a larger proportion of the cost of the pumping station project, especially for pumping stations with high lift and long-distance water delivery. The size of the pipe diameter of the dosing pump affects not only the cost of the pumping station project, but also the power of the pumping station.

When the length of the dosing pump pipeline and the flow rate of the dosing pump pipeline are constant, the larger the pipe diameter is, the smaller the flow rate, the smaller the head loss, and the less power consumed, but the cost of dosing pump pipeline is large; if the pipe diameter selected is small, the situation is opposite to the above.

2. Choosing a reasonable pipe diameter and length of the dosing pump has a great impact on improving efficiency

Reasonable confirmation of the pipe diameter of the dosing pump is of great significance for improving the power of the pumping station, saving power, and reducing engineering costs.

Regarding the mechanical diaphragm metering pump, the pipes of the dosing pump are often installed in a broken line, which results in a long pipe of the dosing pump and many elbows.

Shortening the length of the remaining dosing pump pipeline not only saves the cost of dosing pump pipelines, but also reduces water head loss along the way. Therefore, the length of dosing pump pipelines should be shortened to the greatest extent.

Ark Electric & Mechanical Co., Ltd (ARK LTD) is a professional dosing metering pumps manufacturers, we provide metered dose pump, diaphragm metering pump and etc. Want to buy dosing pump or know more? Please contact us.

Three Flow Regulation Methods of the Metering Pump(2021年09月08日)

newdosepump — 2021-09-01T12:30:18+0900

https://www.newdosepump.com/products/metering-pump.html

In modern industrial production and research, diaphragm metering pump is a pump that is widely used in quantitatively transporting liquids. The flow adjustment of the metering pump adopts manual adjustment of the screw of the metering pump according to the traditional working method, thereby changing the effective stroke of the mechanical diaphragm metering pump, so as to achieve the purpose of quantitative measurement and detection of the output liquid.

Ⅰ. What is a metering pump?

The metering pump is a special positive displacement pump that can transport a variety of liquid media, especially corrosive liquids. With the advancement of science and technology and the development of modern industrial technology, the requirements for pumps under various media and working conditions are getting higher and higher.

Therefore, for mechanical products such as pumps, how to adjust the flow rate is very important, and the metering pump is no exception. So how does the metering pump adjust the flow rate during the transportation process.

Ⅱ. What are the adjustment methods of the metering pump?

1. Set the bypass loop in the output pipeline system, then adjust the bypass valve, and then control the return flow, so as to achieve the purpose of adjusting the output flow of the system. However, this method is not perfect, and energy loss may increase during this operation, so this is also a major defect of this flow regulation method.

2. Adjust the flow rate by changing the speed of the metering pump. This method needs to be carried out when the average flow rate of the pump is proportional to the speed. The reciprocating pump has this feature. Therefore, the flow rate can be adjusted in this way.

In addition, the method of adjusting the flow rate by changing the speed also needs to adjust the speed of the equipment or the motor. However, when the flow rate is small, the number of strokes is too small, resulting in excessive discharge time, which is not allowed for certain chemical reactions. Therefore, the metering pump manufacturers suggest that you still need to pay more attention.

4.The metering pump adjusts the flow rate by adjusting the stroke length of the pump. One of the advantages of the metering pump is that the metering accuracy is high, and even in the case of a small flow rate, it can still meet the linearity requirements, which is one of the most effective methods.

Ark Electric & Mechanical Co., Ltd. is a professional dosing pump supplier, we provide diaphragm metering pump, diaphragm metering pump and etc. Want to know more? Please contact us.

Five Features about Models Selection of Metering Dosing Pump(2021年09月07日)

newdosepump — 2021-09-01T12:29:51+0900

https://www.newdosepump.com/

The basis for the selection of metering dosing pumps should be considered from five aspects according to the process flow and water supply and drainage requirements, such as liquid delivery volume, device head, liquid properties, piping layout, and operating conditions.

1. Flow rate of the metering dosing pump

Flow rate is one of the most important performance data of the metering dosing pump, and it is directly related to the production capacity and conveying capacity of the entire device. For example, the designer can calculate the normal, minimum and maximum flow rates of the pump in the process design. When selecting the pump, take the maximum flow as the basis and take into account the normal flow. When there is no maximum flow, usually 1.2 times the normal flow can be taken as the maximum flow.

2. The head (pressure) of the metering dosing pump

The head (pressure) required by the dosing device system is another important performance data for pump selection. The conditions of electromagnetic pumps and mechanical pumps are different. Generally, electromagnetic pumps do not need to be large, but 1-1.1 times is good. The flow rate of the mechanical pump is less affected by the head, and the selection is mainly based on the flow rate.

3. Liquid properties of the metering dosing pump

Liquid properties include the name of the liquid medium, physical properties, chemical properties and other properties. The physical properties include temperature c, density d, viscosity u, solid particle diameter and gas content in the medium, etc. This relates to the lift of the system, the effective calculation of gas surplus and suitable pump type: chemical nature, mainly refers to the chemical corrosivity and toxicity of the liquid medium, which is an important basis for the selection of pump materials and shaft seal.

4. The piping layout conditions of the metering dosing pump

The piping layout conditions of the dosing device system refer to some data such as the height of the liquid supply, the distance of the liquid, the direction of the liquid, the lowest liquid level of the suction end, the highest liquid level of the discharge outlet, etc. and some data and the pipe specifications and their length, materials. Therefore, the lift is calculated and the cavitation allowance is checked.

5. Operating conditions of the metering dosing pump

Operating conditions include many contents, such as liquid operation T saturated steam power P, suction side pressure PS (absolute), discharge side container pressure PZ, altitude, ambient temperature, whether the operation is intermittent or continuous, and the pump position is fixed or removable.

Based on the above metering dosing pump selection basis, we can easily select the appropriate metering dosing pump according to our needs. After strictly following the basis of metering dosing pump selection, we should pay attention to that the selected metering dosing pump should be as small and cheap as possible, with good characteristics, long service life, stable operation, and low operating costs.

Ark Electric & Mechanical Co., Ltd. is a professional dosing pump manufacturer, we provide diaphragm metering pump, diaphragm metering pump and etc. Want to know more? Please contact us.

Small Dosing Device-PE Dosing Equipment(2021年09月06日)

newdosepump — 2021-09-01T12:29:18+0900

https://www.newdosepump.com/dosing-packages.html

Ⅰ. Purpose of dosing system

The dosing system is a complete set of equipment with dosing, mixing, liquid conveying, and automatic control. It is widely used in power plant raw water, boiler feed water, oil field ground gathering and dewatering treatment systems, various petrochemical dosing systems and wastewater treatment system. It can add coagulant, phosphate, ammonia solution, lime water, corrosion inhibitor, scale inhibitor, bactericidal and algaecide etc.

Ⅱ. Working structure principle of dosing system

The dosing system is mainly composed of solution tank, agitator, metering pump, level gauge, electric control cabinet, pipeline, valve, safety valve, back pressure valve, check valve, pulsation damper, pressure gauge, Y-type filter, etc..

The dosing equipment is configured in the mixing box according to the required concentration of the medicine, and after being evenly stirred by the agitator, it is put into the solution box and the metering pump is used to deliver the prepared solution to the dosing point or the designated system. The complete set of dosing equipment has the characteristics of compact structure, safety and simplicity, and easy operation and use. The dosing equipment can also be designed and configured with necessary components according to the requirements of the user's different process flows to realize automatic remote control and other functions.

Ⅲ. The composition of the small dosing equipment-PE dosing equipment

The dosing equipment is composed of a solution tank, a number of flanges, valves, etc. Equipped with two metering pumps, one for use and one for backup, which is convenient for users to perform maintenance and replacement of accessories without stopping the machine.

The main components of the small dosing equipment-PE dosing equipment are:

1. Solution tank 2. Stirrer 3. Liquid level gauge 4. Filter 5. Safety valve 6. Metering pump 7. Buffer 8. Ball valve, check valve, stop valve 9. Pressure gauge and corresponding pipes.

Example: diaphragm metering pump has a flow rate of 50L/h and a pressure of 1.0MPa;

The model of the diaphragm metering pump is NDWS-68/1.0;

The agitator is composed of a motor, a reducer, and a stirring rod. The motor power is 0.55KW, and the reduction ratio is 45:1;

All parts of the equipment, including the working platform, armrests, etc., are installed on the same carbon steel chassis.

Ⅳ. Precautions for the selection of dosing equipment

1. When the user chooses the dosing equipment, first determine the selection specifications (including the metering pump parameters, the volume of the solution tank, etc.) according to the amount of solution required by the system, and then determine the dosing method according to the dosing situation (usually adopt "one for use one for backup" approach).

2. According to needs, select the material of each component of the dosing equipment (stainless steel, carbon steel, non-metallic materials), metering pump model (electromagnetic diaphragm metering pump, mechanical diaphragm metering pump) or provide our company with the parameters (name, concentration, temperature, density, viscosity, corrosiveness, etc.).

3. Main features of the dosing system:

a Integrated medicine design, small footprint, simple structure and stable performance;

b Accurate measurement, convenient adjustment, good economy, easy to install and maintain;

c The pump is suction-type installation, which is not easy to be blocked with a long trouble-free running time and low operating cost;

d Excellent corrosion resistance and long service life.

e Solution tank material: PE, FRP, carbon steel rubber lined, 304 stainless steel, 316 stainless steel;

f Mixer material: 304 stainless steel, 316 stainless steel;

g The material of the flow-through part of the metering pump: PP, PVC, PVDE, SS316;

Application range of small dosing equipment-PE dosing equipment:

The boiler is injected with chemical liquid, mainly used in thermal power plants, chemical industry, metallurgy, shipbuilding, central heating and other occasions where boilers are used.

It is used for the pretreatment and dosing of tap water, mainly used in urban water plants, large-scale enterprises' own water plants, textile printing and dyeing, iron and steel, papermaking and other industries.

The dosing of wastewater and sewage treatment in environmental protection are mainly used for wastewater and sewage treatment in cities, industrial and mining enterprises, large hotels and restaurants.

The main application of small-sized dosing equipment-PE dosing equipment:

1. Adding chemicals in the furnace of power plant: adding ammonia to feed water, adding hydrazine, adding phosphate to boiler water, coordinating control of adding phosphate to boiler water, adding ammonia to condensed water, etc.

2. Adding chemicals to power plant furnaces: raw water plus flocculant, raw water plus coagulant, circulating water plus stabilizer (corrosion inhibitor), circulating water plus scale inhibitor, circulating water plus fungicide, start boiler room add ammonia, start boiler and add phosphate and condenser ferrous sulfate coating to the room.

3.Water treatment dosing: flocculant, coagulant, defoamer, etc. are added to sewage.

Ark Electric & Mechanical Co., Ltd. is a professional dosing metering pumps manufacturers, we provide diaphragm dosing pump, diaphragm metering pump and etc. Want to know more? Please contact us.

Four Key Steps for Metered Dose Pump Selection(2021年09月05日)

newdosepump — 2021-09-01T12:28:35+0900

https://www.newdosepump.com/

1. Determine the material of the pump head (hydraulic end) of the metered dose pump:

After the specific model and specifications of the metering pump are determined, the material of the flow part is selected according to the properties of the flow medium. This step is very important. If the selection is improper, it will cause media corrosion to damage the flow-through components or media leakage to pollute the system. In severe cases, a major accident may occur.

2. Determine the metering accuracy level of the metered dose pump:

When selecting a metering pump, it is also necessary to consider the accuracy level of the metering pump required. The higher the accuracy level, the greater the investment.

The general operating temperature of metering pumps is -30～100℃, especially the operating temperature of metered dose pumps is wider (such as high-temperature liquid metered dose pumps with thermal insulation jackets, the transportation temperature can reach 500℃).

Regarding the particle size of the medium, the requirement should be less than 0.1mm. Regarding the medium larger than 0.1mm, the flow structure of the pump can be modified to meet the demand.

Regarding the viscosity of the medium, it should generally be between 0 and 400 cP. The metered dose pump equipped with a high-viscosity check valve can reach 4000cP. The flow rate of a mechanical diaphragm metered dose pump is the maximum flow rate measured under the calibrated additional pressure (when clean water is transported at room temperature). If the pressure drops, the output flow rate will be higher than the calibrated value.

3. Determine the pressure of the metered dose pump:

The additional pressure of the selected metered dose pump is slightly higher than the actual maximum pressure required, generally 10-20% higher. Do not choose a metered dose pump with too high pump pressure. Too high pressure will increase the power, thereby increasing equipment investment and operating costs.

4. Determine the flow rate of the metered dose pump:

The flow rate of the selected metered dose pump should be equal to or slightly greater than the flow rate required by the process. The use scale of the metering pump flow rate is preferably 30-100% of the additional flow rate of the metered dose pump. At this moment, the repeated reproduction accuracy of the metered dose pump is high. Considering the economy and practicality, it is recommended that the actual demand flow of the metered dose pump should be selected as 70-90% of the additional flow of the metered dose pump.

Ark Electric & Mechanical Co., Ltd. is a professional diaphragm metering pump manufacturers, we provide metering dosing pump, diaphragm metering pump and etc. Want to know more? Please contact us.

Precautions for Selecting Various Parts of the Metered Dose Pump(2021年09月04日)

newdosepump — 2021-09-01T12:27:53+0900

https://www.newdosepump.com/

Reasonable selection of metered dose pump parts: metering pump parts include metering pump head, metering pump check valve, check valve ball and sealing ball seat, metering pump diaphragm and metering pump hose joint.

The article mainly answers the questions which should be considered when selecting these parts. Since everyone pays attention to the selection requirements of metering pumps, some knowledge does include some of the main points; some ignore the importance of details to determine the success or failure of the selection.

1. Pump head of metered dose pump:

It is important to consider its material. Generally, the material of the pump head of the general metering pump is selected: PP, PVC, PVDF, PTFE and SS316.

①PP: It is easy to form and low in cost. It has acid and alkali resistance and certain high temperature resistance; but it is not suitable for organic solvents, strong acids and alkalis, and liquids containing hypochlorite, and its concentration is limited.

②PVC: It is easy to form, low cost, acid and alkali resistant. However, it is not suitable for the measurement of organic solvents, strong acids and bases and liquids above 40°C. It is also not suitable for the food and drinking water industries. Because of its toxicity, PVC bags are no longer used in food packaging bags.

③PVDF: It is suitable for most media. It is not resistant to high temperatures. Its price is in the middle to high position.

④PTFE: It is suitable for various media. It is resistant to strong acids and alkalis and high temperature. Its cost is relatively high.

⑤SS316: It is suitable for organic solvents and high temperature liquids, but it is not resistant to strong acids.

2. Diaphragm selection of metered dose pump

Commonly used diaphragms: composite diaphragms and pure PTFE diaphragms;

①Composite diaphragm: A layer of PTFE film is applied to the surface of the NBR rubber diaphragm inlaid with bolts to form a composite diaphragm. Some rubber diaphragms are embedded with steel wire mesh to increase its strength.

The cost of this diaphragm is low. Its elasticity can make the shape larger, and can generate a larger flow rate from a smaller plane size, so that the power of the electromagnet is reduced, and the production cost is reduced. However, when it is operated for a long time, the heat of the electromagnet will accumulate on its rubber surface through radiation and the conduction of its inlaid bolts. With deformation, the diaphragm will quickly deteriorate and break. Therefore, this type of diaphragm metering pump has a diaphragm breakage indicator hole.

②Pure PTFE diaphragm: It is integrally processed by modified PTFE, and the cost is relatively high. The deformation of the diaphragm is also relatively small, but this makes it never damaged.

3. Check valve of metered dose pump

Taking into account the internal structure; the check structure of the one-way valve: gravity check and elastic check.

① Gravity check: The valve ball returns to the sealing surface by its own weight to form a one-way check structure with good sealing effect and high-pressure resistance.

② Elastic non-return: refers to restoring the non-return state by the elasticity of the rubber itself. Its cost is low, and it is not resistant to high pressure. After long-term operation, the rubber will age, which will make the anti-return effect worse. In addition, the corrosion of acid and alkali will deform the structure and deteriorate the anti-return effect.

Most of the metered dose pumps made in Italy on the market are of elastic non-return structure. The metered dose pumps of our company's NEWDOSE, the metering pumps made in the United States, Germany and Japan all have a gravity check structure.

The ball and sealing ball seat of the one-way valve with the gravity check structure. There are two general ball materials: glass ball and ceramic ball.

① Glass ball: its cost is low, but some ions in acid and alkali will cause corrosion to it;

② Ceramic ball: its high cost, but suitable for all kinds of acid and alkali; general sealed ball seat: ordinary plastic ball seat, rubber ball seat and PTFE ball seat.

③ Ordinary plastic ball seat: its cost is low. Part of the medium will corrode it, and the non-return effect will become worse after long-term operation.

④ Rubber ball seat: its cost is low. Prolonged acid-base corrosion will change its shape, worsen the anti-return effect or block the flow channel. (The phenomenon that the normal metering pump can't produce liquid medicine after running for a period of time is usually found in the market is caused by it)

⑤ PTFE ball seat: its cost is high. It is suitable for all kinds of liquids and will never deform.

In summary, considering the comprehensive elements of the metered dose pump, two parameters should be paid attention to when selecting the type: flow and pressure. The pressure on the label is the highest normal working pressure of the metering pump, and the flow is the maximum flow under this pressure.

The metered dose pump is a one-way positive displacement pump. The metered dose pump can only pump out liquid when the pressure in the pump cavity is greater than the external pressure. When the external pressure is higher than the pressure on the label, the metered dose pump works in an overload state. If it is a solenoid diaphragm metering pump, its flow will drop a lot, and even no liquid can be pumped out; If it is a motor-driven metering pump, the motor may be overheated and damaged. All of the above are collected by us. Welcome to view NEWDOSE metering pump products.

Ark Electric & Mechanical Co., Ltd. is a professional dosing metering pumps manufacturers, we provide single diaphragm dosing pump, diaphragm metering pump and etc. Want to know more? Please contact us.

The Working Principle of Different Types of Metering Pumps(2021年09月03日)

newdosepump — 2021-09-01T12:27:01+0900

https://www.newdosepump.com/

Ⅰ. The development of metering pumps
With the rapid development and progress of the times, the level of industrial development is now getting higher and higher. In this case, there are many important mechanical equipment, such as various water pumps and water supply equipment, of which metering pumps are very important. This type of water supply equipment can be further divided by appropriate methods. Different types of metering pumps have different working principles. Let's discuss how metering pumps work.

Ⅱ. The working principle of different types of metering pumps
How does the metering pump work?

The metering pump is mainly composed of three parts: power drive, fluid delivery and adjustment control. The power drive device drives the fluid delivery diaphragm (piston) to achieve reciprocating movement through the mechanical linkage system:

The diaphragm (piston) will be sucked in by the delivery fluid in the first half of the stroke and discharged from the pump head in the second half of the stroke; therefore, changing the reciprocating frequency of the stroke or the stroke length of each reciprocating motion can achieve the purpose of adjusting the fluid delivery volume. Precise machining accuracy guarantees each pump output and realizes precise metering of the conveyed medium.

However, different metering pump types have different working principles, which are mainly divided into the following two types:

1. Working principle of diaphragm metering pump

The diaphragm metering pump uses a specially designed and processed flexible diaphragm to replace the piston, and realizes reciprocating motion under the action of the driving mechanism to complete the suction-discharge process. Due to the isolation effect of the diaphragm, the isolation between the metered fluid and the driving lubrication mechanism is truly realized in structure.

2. Working principle of plunger metering pump

The plunger metering pump directly sucks and discharges the working medium (yellow) through the reciprocating movement of the plunger. Since both the plunger and the seal are in contact with the medium, selecting the appropriate plunger material and sealing form can ensure the ideal performance of the pump during operation.

Ark Electric & Mechanical Co., Ltd. is a professional dosing metering pumps manufacturers, we provide metered dose pump, diaphragm metering pump and etc. Want to know more? Please contact us.

Installation and Use of the Metering Pump(2021年09月02日)

newdosepump — 2021-09-01T12:26:31+0900

https://www.newdosepump.com/

Ⅰ. Matters needing attention when installing the metering pump:

1. The dosing metering pump and the motor have an integral structure, and there is no need to align them during installation. So, it is very convenient for installation.

2. Before installing the pump, please carefully check whether there are hard objects (such as stones, iron particles, etc.) in the pump flow path that will affect the operation of the pump, so as not to damage the impeller and pump body during the operation of the pump.

3. The anchor bolts must be tightened during installation to avoid the impact of vibration on the pump performance when starting.

4. The weight of the pipeline should not be added to the pump when the dosing metering pump is installed. Separate support bodies shall be provided to prevent deformation from affecting operation performance and service life.

5. For convenient maintenance and safe use, it is necessary to install a regulating valve on each of the inlet and outlet pipelines of the pump and a pressure gauge near the pump outlet. This is to ensure the operation within the rated head and flow range. Also, this is to ensure the normal operation of the pump and increase its service life.

6. The dosing metering pump is used for suction, so it should be equipped with a bottom valve. And the inlet pipeline should not have too many bends, and at the same time, there should be no leakage of water or air.

7. If the discharge pipeline is a reverse stop, the valve should be installed outside the gate valve.

8. After installation, please turn the pump shaft. The impeller should have friction or jamming, otherwise, the pump should be disassembled and check the cause.

9. The installation method of dosing metering pumps is divided into rigid connection and flexible connection installation.

Ⅱ. Operating procedures of the metering pump:

1. All air switches of the metering dosing pump are opened on the PLC cabinet to check whether the instrument is displayed on site and whether the liquid level display is normal. Then the pool will open quantitatively between the outlet valves.

2. The dosing metering pump, water solenoid valve, dissolving tank mixer, original tank and tank connection valve switch should be switched to the "remote" position. The stroke speed of the metering pump is adjusted on site.

3.The liquid enters the 1# to 3# dissolution tank.

4. Then go back to the console, click to enter the metering system screen, and manually adjust the output frequency of the metering pump.

5. Click the water solenoid valve icon on the screen, turn on the solenoid valve to start pour water into the tank to dilute the liquid storage, and observe the screen level gauge. When the liquid level meter reaches a fixed height, click the blender icon to open the mixer.

6. Observe the level gauge, when it reached the required dilution of the liquid, close the inlet solenoid valve and turn off the mixer. Click the outlet valve icon of the dissolution tank to open the outlet valve, and the click the metering pump icon to turn on the metering pump. Observe the liquid level gauge and flow meter, when the liquid level is too low, please close the metering pump and the liquid valve.

Ark Electric & Mechanical Co., Ltd (ARK LTD) is a professional dosing metering pumps manufacturers, we provide metered dose pump, diaphragm metering pump and etc. Want to know more? Please contact us.

Precautions During the Use of High-pressure Metering Pumps(2021年09月01日)

newdosepump — 2021-09-01T12:25:59+0900

https://www.newdosepump.com/products/high-pressure-dosing-pump.html

1. Introduction of the high pressure metering pump
High pressure metering pumps are useful in many processings. High pressure and mass flow are the typical features of it. However, high pressure is also the test of the high pressure metering pump itself so you must pay attention to the following five aspects when using it.

2. Attentions required in the process of using a high pressure metering pump
1) Avoid starting it in low pressure

In order to improve the efficiency of the high pressure metering pump, you should choose the right nozzle.

High pressure metering pumps come with replaceable nozzles, which can be used for many purposes. Proper nozzle will make the process of nozzle cleaning more efficient.

2) When installing high pressure metering pumps, the cables should be off-contact, and the power cord shouldn't be too long

To avoid breaking the cable, the machine set can not be stressed when entring water. High pressure metering pumps can not sink into mud, otherwise, it will lead to poor heat dissipation and the burning of motor winding.

3) Pay attention to model, flow rate, and head of delivery when purchasing high pressure metering pumps

If you choose an inappropriate model, it won't get adequate water supply, and the efficiency of the unit won't get full play. To prevent the electric leakage of high pressure metering pumps in electric shock accidents, the earth leaking circuit breaker should be installed.

4) High pressure metering pumps shouldn't work for a long time and shouldn't pump too much sand water

Be careful when painting the windows, vents, eaves, and walls, because the high water pressure will knock down fixed windows or break them. When the wall panels is clean, the water nozzle should aim at lower part of the wall to reduce the spraying force, which will prevent water from falling. Additionally, be careful when cleaning the outer walls. Water can penetrate the holes in the edges of windows, so check all windows' frames in case of penetration.

5) The motor of high pressure metering pumps should be checked regularly

To avoid water seeping into the high pressure metering pumps, you should replace or repair them in time if you find cracks or rubber seal's damage or failure.

Ark Electric & Mechanical Co., Ltd (ARK LTD) is a professional diaphragm metering pump manufacturers, we provide metered dose pump, single diaphragm dosing pump and etc. Want to know more? Please contact us.