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Butterfly Valve

Butterfly Valve

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Author: butterfly valve

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  • butterfly valve

Discussion on the instability and vibration of pneumatic control valves.

September 9, 2020 butterfly valve

The action of pneumatic actuator control valve is unstable: 1. Unstable air source pressure. 1) Compressor capacity is too small; […]

Butterfly valve knowledge
pneumatic butterfly valve epdm

Discussion on the problems of non-action of pneumatic control valves.

September 9, 2020 butterfly valve

Pneumatic control valve does not operate: 1. No signal, no air source. 1) The air source is not open; 2) […]

Butterfly valve knowledge

Introduction of electric actuators.

August 18, 2020 butterfly valve

Electric actuators are mainly use in power plants or nuclear power plants. Because a smooth, stable and slow process is […]

Butterfly valve knowledge
pneumatic butterfly valve High performance

Causes and solutions of vibration of pneumatic actuators.

August 18, 2020 butterfly valve

Pneumatic actuators are a kind of classification in actuators. From the perspective of technical performance, the advantages of pneumatic actuators […]

Butterfly valve knowledge
pneumatic butterfly valve epdm

Inspection standards and methods for pneumatic actuators.

August 14, 2020 butterfly valve

1. Fix the pneumatic actuator on the test table and connect the air source, control air source and displacement detection […]

Butterfly valve knowledge

Preparation of pneumatic actuators before inspection.

August 14, 2020 butterfly valve

Pneumatic actuators also known as pneumatic head pneumatic head, is driven by air pressure to open and close or adjust […]

Butterfly valve knowledge

How to solve the problem of slow response of AT pneumatic actuators?

August 5, 2020 butterfly valve

The use of AT pneumatic actuators sometimes shows a slow reaction, which undoubtedly greatly affects the working efficiency of AT […]

Butterfly valve knowledge
pneumatic lug butterfly valv

Classification of pneumatic actuators.

August 5, 2020 butterfly valve

Pneumatic actuators are driven by air pressure to open and close or adjust the valve actuators, commonly known as pneumatic […]

Butterfly valve knowledge
butterfly valve end connection flange types

Function of valve positioner and classification.

July 28, 2020 butterfly valve

Valve positioner is the main accessory of pneumatic actuator control valve. It takes stem displacement signal as input feedback measurement […]

Butterfly valve knowledge

The main embodiment of diversification and energy-saving development of pneumatic actuators.

July 28, 2020 butterfly valve

Actuators have pneumatic and electric two forms, usually we understand more about pneumatic actuators. But pneumatic actuators from the technical […]

Butterfly valve knowledge
pneumatic butterfly valve High performance

Working principle of pneumatic valve.

July 22, 2020 butterfly valve

Pneumatic valves in regulating valve are characteristic of the valve. Because of the pneumatic valve is connect to the pneumatic […]

Butterfly valve knowledge
pneumatic lug butterfly valv

How to solve the problem of pneumatic valve opening and closing jitter?

July 22, 2020 butterfly valve

The more and more widely used pneumatic valve is a good proof of this point, with the widespread use of […]

Butterfly valve knowledge

Pneumatic actuators have three major self-protection functions.

July 16, 2020 butterfly valve

Pneumatic actuators as an important equipment, in many industries have a good use. It can use for all kinds of […]

Butterfly valve knowledge

How to improve the switching speed of AT pneumatic actuators?

July 16, 2020 butterfly valve

As the speed of AT pneumatic actuators increases, the impact of actuators and valves in the off or open position […]

Butterfly valve knowledge
pneumatic lug butterfly valv

Advantages and disadvantages of pneumatic components.

July 10, 2020 butterfly valve

Advantages: 1. Pneumatic device is simple in structure, light in weight, simple in installation and maintenance. The medium is air, […]

Butterfly valve knowledge

Common faults in hydraulic system.

July 10, 2020 butterfly valve

1. Pressure loss. Because liquids are viscous and have friction when flowing in pipelines, they must lose some energy in […]

Butterfly valve knowledge
lug butterfly valve

Advantages and disadvantages of hydraulic system.

July 2, 2020 butterfly valve

Hydraulic valves are widely used in water, steam, sewage, papermaking, petrochemical industry, solution and slurry two phase mixed flow medium, […]

Uncategorized

Application of hydraulic control valve.

July 2, 2020 butterfly valve

The hydraulic control slow closing ball valve features small flow resistance coefficient, high degree of automation, complete functions, stable and […]

Butterfly valve knowledge

The characteristics of explosion-proof electric actuator performance.

June 23, 2020 butterfly valve

1. Shell. The shell is made of hard aluminum alloy, anodized and polyester powder coated, with strong corrosion resistance, protection […]

Butterfly valve knowledge

Notes for valve test pressure.

June 23, 2020 butterfly valve

(1) Generally, strength test is not require for valves, but strength test shall conduct for valve body and bonnet after […]

Butterfly valve knowledge

Operating requirements for electric actuators.

June 9, 2020 butterfly valve

  1. Equipment environmental requirements. This PL series valve electric actuators can be used indoors or outdoors. This PL series […]

Butterfly valve knowledge
paf-butterfly-valve

Notes for installation of electric actuator and valve.

June 9, 2020 butterfly valve

1. Manually turn the valve to check that there is no abnormal situation and make the valve in the full […]

Butterfly valve knowledge

Application field of electric actuators.

June 6, 2020 butterfly valve

Electric actuators are mainly used in the following three fields. 1. Power plant. Typical applications are: ① Application in thermal […]

Butterfly valve knowledge

Important parameters of electric actuators.

June 4, 2020 butterfly valve

1. Stroke of electric actuator. This parameter is also an important parameter. For the angle stroke electric actuator, the stroke […]

Butterfly valve knowledge
Electric butterfly valve wire drawing

The structural form of the electric actuators.

May 29, 2020 butterfly valve

According to the movement mode of the controlled object, the electric actuator can divide into the following structural types: straight […]

Butterfly valve knowledge
pneumatic butterfly valve lined ptfe

How to protect the valve from corrosion?

May 27, 2020 butterfly valve

Corrosion is one of the important elements that cause valve damage. Therefore, in valve protection, valve anti-corrosion is an important […]

Butterfly valve knowledge

Characteristics and selection of various valve driving devices.

May 22, 2020 butterfly valve

Valve drive mode: According to the movement mode of the driving mechanism, the valve driving device is divided into two […]

Butterfly valve knowledge

How to operate valves correctly?

May 22, 2020 butterfly valve

For valves, not only installation and regular maintenance, but also operation. Generally, the opening and closing of the valve shall […]

Butterfly valve knowledge
Triple Offset Butterfly Valves

Maintenance of valve in use.

May 14, 2020 butterfly valve

During the use of the valve, attention should be paid to the maintenance. Good maintenance can ensure the reliable operation […]

Butterfly valve knowledge

Cause and maintenance of overload of electric actuators.

May 14, 2020May 14, 2020 butterfly valve

Overload may occur if: 1. The power supply voltage is low, and the required torque is not obtain. So that […]

Butterfly valve knowledge

The selection principle of electric actuator.

May 9, 2020 butterfly valve

  In general, the correct choice of electric actuator is based on the following: 1. Operating torque. Operating torque is […]

Butterfly valve knowledge

Main valve standard: DIN standard or EN standard.

May 9, 2020May 9, 2020 butterfly valve

At present, the international each country for the use of the valve standards are not the same. Because of the […]

Butterfly valve knowledge

Difference between electric butterfly valve and electric gate valve.

April 29, 2020 butterfly valve

  Electric butterfly valve definition: Electric butterfly valve is one of the most commonly used valves in industrial pipelines. Butterfly […]

Butterfly valve knowledge
butterfly valve weight

Notes for use of telescopic flange butterfly valve.

April 29, 2020April 29, 2020 butterfly valve

  Flange retractable butterfly valve , not only for the valve disassembly and assembly to bring convenience. And can relieve […]

Butterfly valve knowledge

Structure characteristics and basic principle of ventilation butterfly valve.

April 23, 2020 butterfly valve

Ventilation butterfly valve is a kind of non closed butterfly valve. The ventilation butterfly valve is use in the dust […]

Butterfly valve knowledge

Selection of electric actuator for electric butterfly valve.

April 23, 2020 butterfly valve

As the electric butterfly valve is compose of butterfly valve and electric device. How to select the electric device correctly […]

Butterfly valve knowledge

Introduction of PVC butterfly valves.

April 16, 2020April 23, 2020 butterfly valve

  PVC butterfly valve is plastic butterfly valve. Plastic butterfly valve has strong corrosion resistance, wide application range, wear resistance, […]

Butterfly valve knowledge
paf-butterfly-valve

Common troubleshooting methods in the operation of electric butterfly valve.

April 16, 2020April 23, 2020 butterfly valve

1. Before the installation of electric butterfly valve, confirm whether the product performance and medium flow direction arrow of the […]

Butterfly valve knowledge

Analysis of common faults of the newly installed electric butterfly valve.

April 9, 2020April 23, 2020 butterfly valve

Electric butterfly valve is the main control butterfly valve in the production process automation system. It is an important implementation […]

Butterfly valve knowledge

Characteristics of electric butterfly valve gear drive.

April 9, 2020April 23, 2020 butterfly valve

  1) Instantaneous transmission ratio is stable. Work stability is high. 2) Non-circular gear design. Instantaneous transmission ratio can be […]

Butterfly valve knowledge
lug butterfly valve

Relevant certification of valves.

April 1, 2020April 23, 2020 butterfly valve

  1. ISO 9001 quality system certification. The role of the certification is to establish a quality assurance system from […]

Butterfly valve knowledge

Introduction of high performance butterfly valves.

March 31, 2020April 23, 2020 butterfly valve

  High performance butterfly valve is a kind of butterfly valve with Telfon lining in the inner cavity of the […]

Butterfly valve knowledge
Triple Offset Butterfly Valves

The features of triple eccentric butterfly valves.

March 26, 2020April 23, 2020 butterfly valve

1. API specifications. As is well known, API609 has become a de facto international specification for valves used in important […]

Butterfly valve knowledge

Advantages and USES of triple-eccentric metal seated butterfly valves.

March 26, 2020April 23, 2020 butterfly valve

  In order to meet the requirements of various working conditions, butterfly valves have experienced the evolution from concentric to […]

Butterfly valve knowledge
motorised carbon steel butterfly valve

The size diaphragm of pneumatic flange butterfly valves(PN16).

March 20, 2020April 23, 2020 butterfly valve

DN In pipe diameter OD of seal surface PN16 flange OD PCD BOLTS&Length Thinkness 40 1.5 45 85 150 110 […]

Butterfly valve knowledge
butterfly valve jis standard 5k

The size diaphragm of pneumatic flange butterfly valves(PN10).

March 20, 2020March 20, 2020 butterfly valve

The size diagram of pneumatic butterfly valves is as follows, for reference only: DN In Pipe diameter Outside diameter of […]

Butterfly valve knowledge

How to select the accessories of pneumatic butterfly valves?

March 13, 2020April 23, 2020 butterfly valve

(1) Pneumatic butterfly valve accessories mainly include: positioner, converter, actuator, booster valve, position-preserving valve, pressure-reducing valve, filter, oil mist, travel […]

Butterfly valve knowledge

How to maintain pneumatic butterfly valves? (II)

March 10, 2020April 23, 2020 butterfly valve

Installation requirements: 1. Confirm the flange welding is correct. Do not weld the flange after the butterfly valve is install […]

Butterfly valve knowledge

How to mantain pneuamtic butterfly valves?(I)

March 6, 2020April 23, 2020 butterfly valve

Installation precautions: 1, Before installation should keep dry, not stored in the open air. 2, Before the installation of butterfly […]

Butterfly valve knowledge

The selection and installation of pneumatic actuators

March 6, 2020April 23, 2020 butterfly valve

How to choose pneumatic actuators? Usually adopts the new series of AT pneumatic actuators that have double acting and single […]

Butterfly valve knowledge

Installation requirements of pneumatic butterfly valves

February 28, 2020April 23, 2020 butterfly valve

Installation precautions as below: 1. Before installation, check that all parts of the pneumatic butterfly valve are free of missing […]

Butterfly valve knowledge

The working principle and characteristics of pneumatic butterfly valves

February 28, 2020April 23, 2020 butterfly valve

The working principle: Pneumatic butterfly valve is a kind of pneumatic valve which uses the circular butterfly plate rotating with […]

Butterfly valve knowledge

Installation and maintenance of butterfly valves.

February 28, 2020April 23, 2020 butterfly valve

Key points of product selection. 1. The main control parameters of butterfly valve are specification and size. 2, Butterfly valve […]

Butterfly valve knowledge
Triple Offset Butterfly Valves

National standard of butterfly valves

February 24, 2020April 23, 2020 butterfly valve

Butterfly valve national standard refers to the standard approved and issued by the national standardization authority and unified nationwide. The […]

Butterfly valve knowledge

How to classify butterfly valves?

January 16, 2020April 23, 2020 butterfly valve

1. According to the driving mode: (1) Electric butterfly valve. (2) Pneumatic butterfly valve. (3) Hydraulic butterfly valve. (4) Manual […]

Butterfly valve knowledge

The features of butterfly valve.

January 10, 2020January 10, 2020 butterfly valve

  1. Butterfly valve has the characteristics of simple structure, small volume, light weight, low material consumption, small installation size, […]

Butterfly valve knowledge

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Product categories

  • Triple Offset Butterfly Valves (1)
  • Inflatable butterfly valve (1)
  • wafer butterfly valve (5)
  • Lug butterfly valve (2)
  • Flange butterfly valve (1)
  • High performance butterfly valve (2)
  • High pressure butterfly valve (2)
  • Lining ptfe butterfly valve (2)
  • Lining rubber butterfly valve (3)
  • Electric butterfly valve (1)
  • Pneumatic butterfly valve (3)






    About us

    >  Our factory
    >  Quality Assurance
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    >  Our team

    Pov valves (Shanghai) Co., Ltd.

    Address: Room 1505 of Tianna Shanghui, No.6 Jianyun Road, Pudong, Shanghai,China.
    Tel: 0086-553-3819777
    Tel: 0086-553-3801388
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    E-mail: sales@povbutterflyvalve.com
    whatsapp: 0086-189 4959 9420

    Butterfly valve Product

    >  Wafer butterfly valve
    >  Lug butterfly valve
    >  Flanged butterfly valve
    >  Lined butterfly valve
    >  high performance butterfly valve
    >  Electric Butterfly Valve
    >  Pneumatic butterfly valve






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