逆止弁の種類

» 逆止弁の種類

Many types of check valve can be made from different materials, such as brass check valve, stainless steel check valve, PVC check valve, and cast iron check valve, depending on the application and the fluid or gas properties.

They also known as non-return valves or one-way valves, are mechanical valves that allow the fluid or gas to flow in one direction and prevent backflow. This type have a disc or a ball that rests on a seat, which closes the valve when the flow stops or reverses direction.

Farpro Valve manufacturers offer a wide range of general-purpose check valves and most specialty non-return valves to many industries and businesses. We guarantee the best quality of check valve products while keeping the sales price as low as possible. Our Check valves do not necessarily have the lowest price, しかし、私たちは間違いなく最も誠実なメーカーであり、最も忠実なパートナーになります.

types of check valve

Types of Farpro Check Valves

With a pass rate of over 93% on single test runs, our check valves are consistent and accurate, a result of our commitment to utilizing the latest technology and machinery, and adhering to strict quality control measures during the manufacturing process.

We also prioritize timely delivery of our products, with a delivery rate of over 99%. We understand that project timelines and schedules are crucial, and we strive to ensure that our valves are delivered on time to meet our customersneeds.

Advantages of Check Valves

Preventing Backflow: The primary advantage of non-ruturn check valves is that they prevent backflow, which can cause damage to equipment and disrupt the flow of fluid in a system. By preventing backflow, check valves help to maintain system efficiency and prevent costly downtime.

Reduced Maintenance: Check valves require little maintenance compared to other types of one-way valves. They are typically designed to operate without any external power source, making them easy to install and maintain.

Energy Savings: Check valves can help to reduce energy consumption in a system. By preventing backflow, check valves reduce the need for additional pumping power to compensate for the loss of pressure caused by reverse flow. This can result in significant energy savings over time.

Improved System Efficiency: Types of check valves can improve the overall efficiency of a system by maintaining a consistent flow of fluid in one direction. This can help to reduce the wear and tear on equipment and improve the performance of pumps and compressors.

swing check valve

スイングチェックバルブ

Swing check valves are the most common type of check valves. They consist of a disk that swings on a hinge, allowing the fluid to flow in one direction and closing when the fluid flows in the opposite direction.
Swing check valves are suitable for applications with low to moderate flow rates, and where back pressure is minimal.

Lift piston check valve wcb

Lift / Piston Check Valve

Lift/Piston check valves are similar to swing check valves, but instead of swinging, the disk moves up and down to open and close the valve. Lift check valves are suitable for high-pressure applications and where the flow rate is low to moderate.
Piston check valves are commonly used in oil and gas pipelines, power generation, mining, and petrochemical industry applications to prevent backflow of fluids or gases and protect the equipment from damage.

Wafer check valve

ウェハチェックバルブ

The wafer check valve is thin and structurally stable, so it can be adapted to a wide range of scenarios.
This type check valve is widely used in roommate chemical, metallurgical manufacturing, 医薬品, environmental protection, paper making, mining, urban construction, household pipeline and other industries.

ball check valve wcb

ボールチェックバルブ

Ball check valves use a ball-shaped disk to control the flow of fluid. When the fluid flows in the desired direction, the ball moves away from the valve seat, allowing the fluid to pass through.
When the fluid flows in the opposite direction, the ball is pressed against the valve seat, preventing backflow. Ball check valves are suitable for applications with high flow rates and where minimal pressure drop is required.

stop check valve stainless steel

ストップチェックバルブ

Stop check valves combine the features of a lift check valve and a globe valve. They allow fluid to flow in one direction and close to prevent backflow.
However, they also allow the operator to manually close the valve in the event of an emergency or maintenance. Stop check valves are suitable for high-pressure applications and where frequent maintenance is required.

silent check valve

サイレントチェックバルブ

A silent check valve is a type of valve that is designed to prevent backflow in a piping system. The valve body is usually made of metal or plastic and contains the other components of the valve. The nozzle is a small opening in the valve body that allows fluid to flow through. The check valve element is located inside the valve body and is designed to allow fluid to flow in one direction only.
The scope of application of a nozzle check valve can be in a wide range of industries, including oil and gas, 化学薬品, 石油化学, 医薬品, food and beverage, and water treatment. These valves can be used in a variety of applications, such as pipelines, pumps, and compressors, to prevent backflow and protect equipment.

Foot Check Valve

Foot check valves have a simple structure with a disc that moves up and down on a hinge or pivot. The disc opens when the fluid flows in the right direction and closes when there is backflow or reverse flow. The valve body typically has a foot or base that is placed at the bottom of the pipeline to ensure the proper flow direction.
Foot check valves are commonly used in water supply systems, irrigation systems, 化学処理, and HVAC systems to prevent backflow of water or chemicals and protect the system from contamination.

Diaphragm Check Valve

Diaphragm check valves use a flexible diaphragm to control the flow of fluid. When the fluid flows in the desired direction, the diaphragm is pushed aside, allowing the fluid to pass through.
When the fluid flows in the opposite direction, the diaphragm is pushed against the valve seat, preventing backflow. Diaphragm check valves are suitable for applications where low pressure drop is required, and where the fluid may contain solid particles or debris.

The Most Important Applications and Uses of Check Valves

Water Treatment Project

Water Treatment Project

Swing check valves are commonly used in water treatment plants to prevent backflow and protect pumps. According to Farpro's statistics, it was found that different types of valves are used for each level of general wastewater treatment.

1. The first step, primary treatment, removes solid pollutants in suspension, and most physical treatment methods meet the requirements of treatment. After primary treatment, the removal rate of BOD is generally around 30%. Here commonly used valves and pipeline accessories are: knife gate valves, triple eccentric butterfly valves, filters, 等.
2. the second step, the need to remove the colloid and dissolved organic pollutants in the sewage (BOD, COD substances), the removal rate of 90%, so that organic pollutants meet the discharge standards, suspended matter removal rate to 95%. The valves commonly used here are soft seal butterfly valves, gate valves, ボールバルブ, チェックバルブ, 等.
3. the third step, the main methods include biological denitrification and phosphorus removal, coagulation and sedimentation, sand filtration, activated carbon adsorption, ion exchange and electroosmosis. The valves needed here are butterfly valve, gate valve, ball valve, check valve, rubber soft joint, 等.

Power Generation Industry​

Power Generation Industry

Farpro believes that power plant applications put piping and valves under tremendous stress, so valves need robust materials and designs to handle the multiple tests of circulation, temperature and pressure.

Stop check valves are commonly used in power generation applications, where high-pressure steam and fluid must be controlled to ensure safety and prevent damage to equipment.

In addition to the main steam valves, power plants have many auxiliary pipelines. These auxiliary pipelines consist of a wide variety of globe valves, バタフライバルブ, チェックバルブ, ボールバルブ, and gate valves.

Chemical Processing

Chemical Processing

Ball check valves are commonly used in chemical processing applications, where the flow rate is high, and pressure drop is minimal.

Oil & Gas Marine Industrial

Oil & Gas / Marine Industry

Farpro has concluded, based on global sales and data, that the demand for valves in the global oil and gas extraction industry and transportation industry continues to grow. This demand has led to the oil and gas industry's quest for deeper drilling pipelines and lower production costs, so technicians are taking greater care in selecting quality valve equipment and hardware.

Diaphragm check valves are suitable for the oil and gas industry, where the fluid may contain debris, and low pressure drop is required.

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Oil&Gas / 石油化学サプライヤー

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都市建設サプライヤー

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Farpro バルブの信念

Farpro Valveにとって、一つ一つの製品を真剣に扱い、一人一人のお客様を真摯に受け止めることが最も重要なことであると信じています。.

Our check valves do not necessarily have the lowest price, しかし、私たちは間違いなく最も誠実なメーカーであり、最も忠実なパートナーになります.

Farpro Valve is a global valve manufacturer that specializes in the research, 発達, 生産, and sales of valves for a variety of industries. Our products meet a range of standards including GB/JB, API, ANSI, アワ, から, 彼, ゴスト, とNF.

We offer a wide range of valves, including gate type valves, globe type valves, ball type valves, butterfly type valves, check type valves, ダイヤフラムバルブ, 減圧弁, プラグバルブ, そして罠. Our valves are available in 12 大分類, 200 シリーズ, そして 4000 サイズ, providing our customers with ample options to suit their needs.

Our valves are made from a variety of materials, including brass, stainless steel, PVC, and cast iron, depending on the application and fluid or gas properties. We ensure that all of our products are of the highest quality and reliable in operation.

With an annual output of 80,000 トン, our products are widely used in industries such as petroleum, 石油化学, 化学薬品, 電力, 冶金, 水の保全, 工事, 医薬品, 排水, もっと. Our valves are popular in over 30 countries and regions in Europe, 中央アジア, 西アジア, 以降, ドイツも含めて, イングランド, フランス, イタリア, ブラジル, and Poland.

ファープロバルブにて, we prioritize honesty and integrity and strive to be the most faithful partner to our customers. Our check valves, for example, may not have the lowest price, but we guarantee that we are the most honest manufacturer in the market. Choose Farpro Valve for high-quality products and reliable service.

    Farpro Valve を優先パートナーとして検討していただきありがとうございます.

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    FAQs

    What is a check valve?
    A check valve is a mechanical valve that allows fluid to flow in one direction while preventing backflow in the opposite direction.

    What are the types of check valves?
    There are several types of check valves, including swing check valves, lift check valves, and ball check valves.

    Where are check valves used?
    Check valves are used in a variety of industries, including oil and gas, water treatment, 化学薬品, food processing, and HVAC.

    What are the advantages of check valves?
    Check valves offer several advantages, including preventing backflow, reducing maintenance, saving energy, and improving system efficiency.

    How do check valves help to save energy?
    Check valve can help to reduce energy consumption in a system by preventing backflow and reducing the need for additional pumping power to compensate for the loss of pressure caused by reverse flow.