advantages of butterfly valve Archives

Advantages of the handle butterfly valve of Tanghai valve manufacturer

March 8, 2022

What are the advantages of handle butterfly valve? To understand this, let’s first understand the handle butterfly valve. The handle butterfly valve is a kind of manual butterfly valve. The common materials for making the handle butterfly valve are gray cast iron, ductile iron, cast steel, stainless steel, etc. The handle butterfly valve is the most common pipeline accessory in the pipeline system. It is generally required to be installed horizontally, and the

marine valve; butterfly valve; check valve; gate valve; manufacturer in China

butterfly plate of the handle butterfly valve is installed in the diameter direction of the pipeline. The switch operation is also very simple and convenient. Rotate the handle, the handle drives the valve stem to rotate, and the circular butterfly plate rotates around the valve stem. Usually, it is turned on by turning counterclockwise, and turned off by turning clockwise. The rotation angle is 0°-90°. Between °, when the disc rotates to 90°, the valve is fully open.
The handle butterfly valve has a simple structure and small volume. It can be seen in the water treatment, urban water supply and drainage, petroleum, chemical industry, and even the cooling water system of the thermal power station.

JIS 10K-wafer butterfly valve-backup seat (4)

Tanghai Valve is committed to providing high-quality valve products and services to the society. The handle butterfly valve has always been our flagship product and one of the most satisfied products for customers. So in the highly competitive valve market, what are the advantages of the handle butterfly valve of Tanghai valve manufacturers?

1. Different handle design
The handle end of the handle butterfly valve adopts a humanized arc structure, which will not let the operator hurt his hand during operation, and it is more labor-saving to open and close.

2. Stainless steel handle bolts and disc pins
The bolts used on the handle and the pins on the butterfly plate are all made of stainless steel, and the corrosion resistance is more than 10 times that of ordinary products, making it safer to use.

3. Reinforcement at both ends of the butterfly plate
In order to prevent the instantaneous impact of the flowing medium to break the butterfly plate after the butterfly valve is installed, four reinforcing ribs are specially added at both ends of the butterfly plate.

4. Valve seat for vulcanization process
In order to ensure the sealing performance of the valve, the valve seat adopts the vulcanization process, which makes the valve seat and the valve body fit better, and the sealing surface is wider, which is more reliable than the sealing performance of ordinary butterfly valves.

5. Valve body painted with epoxy paint
If the butterfly valve is installed outdoors, the valve body is exposed, and it is easy to rust, which affects the service life of the valve. For this reason, Tanghai Valve specially sprays the valve body with epoxy resin paint, which makes the valve body of the butterfly valve more resistant to oxidation and can be safely installed outdoors.

6. Pressure test higher than the national standard
Each butterfly valve of Tanghai Valve must pass a pressure test higher than the national standard before leaving the factory.

7. Universal universal valve body
Tanghai Valve’s wafer butterfly valve adopts universal universal body, which can meet the national standard, German standard, American standard, Japanese standard, Korean standard, British standard and other standards at the same time, so as to meet the needs of different customers.

8. The natural rubber content of the valve seat exceeds 40%
The natural rubber content of the valve seat of the soft sealing butterfly valve is more than 40%, which has a longer service life than ordinary rubber.

TH Valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil, Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D

Video of center-lined butterfly valve:

Advantages and disadvantages of butterfly valve and structure diagram

July 26, 2021

Advantages and disadvantages of butterfly valve and structure diagram
The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve opening and closing or adjustment. The butterfly valve is usually less than 900 from fully open to fully closed. The butterfly valve and the butterfly rod themselves are not self-locking. For the positioning of the butterfly plate, a worm gear reducer must be installed on the valve rod. The use of worm gear reducer can not only make the disc plate have self-locking ability, make the disc plate stop at any position, but also improve the operation performance of the valve.

ductile iron, DI, butterfly valve, manufacturer, center line, TH valve

The industrial butterfly valve is characterized by high temperature resistance, high applicable pressure range, large nominal diameter of the valve, the valve body is made of carbon steel, and the sealing ring of the valve plate uses a metal ring instead of a rubber ring. The large high temperature butterfly valve is made of steel plate welding, and is mainly used for flue ducts and gas pipes of high temperature media.
(1) Advantages of butterfly valve:
1. It is convenient and quick to open and close, labor-saving, low fluid resistance, and can be operated frequently.

Wafer and Lug type butterfly valve structures & parts

2. Simple structure, small size and light weight.
3. Mud can be transported, and the accumulation of liquid at the pipe mouth is the least.
4. Under low pressure, good sealing can be achieved.
5. Good adjustment performance.
(2) Disadvantages of butterfly valves:
1. The working pressure and working temperature range are small.
2. Poor airtightness.
(3) Installation and maintenance of butterfly valve:
1. During installation, the valve disc should be stopped in the closed position.
2. The opening position should be determined according to the rotation angle of the butterfly plate.
3. For the butterfly valve with bypass valve, the bypass valve should be opened before opening.
4. The installation should be carried out according to the installation instructions of the manufacturer, and the heavy-weight butterfly valve should be installed with a firm foundation.
Related knowledge: the principle of butterfly valve structure

Double flange butterfly valve structure

Related products: Electric butterfly valve Pneumatic butterfly valve

TH Valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil, Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D

The advantages and disadvantages of butterfly valves

July 10, 2020

Advantages of butterfly valve:

1. Convenient opening and closing, labor saving, low fluid resistance, and can be operated frequently.

wafer type butterfly valve, NBR seat (11)

2. The structure is simple, the external dimensions are small, the structural length is short, the volume is small, and the weight is light. It is suitable for valves with large diameter.

3. Mud can be transported, and the least liquid is accumulated in the pipe mouth.

4. Under low pressure, a good seal can be achieved.

5. Good adjustment performance.

6. When fully opened, the effective flow area of the valve seat channel is large, and the fluid resistance is small.

7. The opening and closing torque is small, because the butterfly plates on both sides of the rotating shaft are basically the same under the action of the medium, and the direction of generating torque is opposite, so the opening and closing are more labor-saving.

8. The sealing surface material is generally rubber, plastic, so the low-pressure sealing performance is good.

9. Easy installation.

10. Flexible and labor-saving operation, you can choose manual, electric, pneumatic, hydraulic mode.

Disadvantages of butterfly valve:

1. The operating pressure and operating temperature range are small.

2. Poor sealing.

Butterfly valves can be divided into offset plate type, vertical plate type, inclined plate type and lever type according to the structure.

According to the sealing form, it can be soft-sealed or hard-sealed. The soft seal type generally uses a rubber ring seal, and the hard seal type usually uses a metal ring seal.

According to the connection type, it can be divided into flange connection and wafer connection; according to the transmission mode, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.

TH Valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with API, JIS, DIN standard, used in Oil, Gas, Marine industry, Water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with Nominal Diameter of DN50 to DN1200, NBR/EPDM/VITON, Certificates & Approvals: DNV-GL, Lloyds, DNV, BV, API, ABS, CCS. Standards: EN 593, API609, API6D

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Advantages of the handle butterfly valve of Tanghai valve manufacturer

Advantages and disadvantages of butterfly valve and structure diagram

The advantages and disadvantages of butterfly valves

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