Butterfly Valve Article
  1. Home
  2. Blog
  3. Butterfly Valve Article

What are the types of flanged butterfly valves?

3 views Source: VALTEC China Valve Manufacture CO.,LTD

Flanged butterfly valves are mainly used in industrial production pipelines, its role is mainly to cut off the flow of media in the pipeline, or to regulate the size of the media flow in the pipeline.

Flanged butterfly valves are widely used in water conservancy projects, water treatment, petroleum, chemical industry, urban heating and other general industrial production pipelines, and can also be used on condensers and cooling water systems in thermal power stations.

Flanged butterfly valves are particularly suitable for making large diameter valves, and they are widely used in the field of large diameter regulation. When the flanged butterfly valve is fully open the flow resistance is small, and when the butterfly plate opening angle is between about 15-70°, the flanged butterfly valve can control the medium flow very sensitively.

In addition, because the butterfly plate of the flanged butterfly valve has wiping properties when doing rotational movement, this type of valve can be used in pipelines with suspended particles and, depending on the strength of the seal, can also be used in powder and granular media pipelines.

Classification of flanged butterfly valves

Flanged butterfly valves can be divided into soft seal flange butterfly valves and hard seal flange butterfly valves according to the sealing surface material.

Soft seal flange butterfly valve

Worm Gear Operated Double Flanged Ductile iron Butterfly Valve
Worm Gear Operated PTFE Seat Double Flanged Butterfly Valve

Soft seal flanged butterfly valves use rubber, fluorine plastic and other resilient sealing materials for their sealing subs.

The sealing ring of soft seal flanged butterfly valve can be inlaid inside the valve body channel in addition to the butterfly plate periphery, when it is used as a cut-off valve, its sealing performance can reach FCI70-2:2006 (ASME B16 – 104) level VI, which is much higher than that of hard seal flanged butterfly valve; however, because the soft sealing material is limited by the use of temperature, the soft seal flanged butterfly valve is usually used in Water conservation and water treatment at room temperature.

Hard seal flange butterfly valve

Hard seal flanged butterfly valves

Hard seal flanged butterfly valves use metal-to-metal, metal-to-fluoroplastic and multi-layer composite plates for their sealing subs.

The metal hard seal flange butterfly valve has the advantage of material, can adapt to higher working temperature, larger working pressure, service life is also longer than the soft seal, but the disadvantage of the hard seal flange butterfly valve is also very obvious, is difficult to achieve complete sealing, sealing performance is very poor, so this type of flange butterfly valve is generally used for sealing performance requirements are not high occasions, do regulate the flow of use.

Learn More: ,

REALTED POSTS

DN80(3 Inch) Lug Type Butterfly Valve (Resilient Seat) Suppliers and Manufacturers

DN400(16 Inch) Butterfly Valve Wafer Type with Worm Gear Suppliers and Manufacturers

DN200(8 Inch) Stainless Steel Butterfly Valve Wafer Type Price, Suppliers and Manufacturers

DN50(2 Inch) Butterfly Valve Wafer Type Price, Supplier and Manufacturer

Ductile Iron Butterfly Valve Wafer Type Price, Supplier & Manufactruer

Lug Style Butterfly Valve with PTFE Seat Factory, Supplier & Manufacturer

REALTED CASES

Double Flanged Butterfly Valve Lever Handle Sold to Hong Kong

WRAS Lugged Butterfly Valve, EPDM Coating sold to South Africa

A Batch of Resilient Seated Butterfly Valves are Exported to Poland

CF8M Triple Eccentric Butterfly Valve Sales to South Africa

Double Flanged Butterfly Valves Sales to UAE

EN558 U Type Butterfly Valve with EPDM Seat Exported to Europe

REQUEST A QUOTE
Contact Information

We would like to serve you in the best possible way. Do you have any questions, please fill out the contact form and one of our qualified employees will contact you as soon as possible.

Fill in the error, please re-fill and submit!

  • E-mail address entered is invalid.