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SD341X flanged telescopic butterfly valve,flanged telescopic butterfly valve,butterfly valve

Product Code : VF--DCC-D118-CU

Product Model: SD341X

Nominal diameter: DN50 - DN2000

Nominal pressure: PN0.6-1.6MPa

Applicable temperature: X:-40℃ to 90℃ XF:-20℃ to 200℃ (soft seal) Carbon steel :-29℃ to 425℃; Stainless steel: -40℃ to 650℃ (hard seal)

Applicable media: water, air, natural gas, oil products and weakly corrosive fluids

Drive methods: worm gear transmission, electric, pneumatic, hydraulic

Valve body material: WCB, QT450-10, stainless steel

Manufacturing standards: JB/T8527-97, GB/T 122387-89

Flange standards: GB9113-2000, GB17241.6-1998

Inspection standard: GB/T 13927-92


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SD341X flanged telescopic butterfly valve,flanged telescopic butterfly valve,butterfly valve VF--DCC-D118-CU Customized Customized

The SD341X flanged telescopic butterfly valve features automatic compensation for the thermal expansion and contraction of pipelines and convenient installation and removal. It is an ideal device for regulating flow and cutting off fluid in industrial pipelines with temperatures below 120℃ and nominal pressures below 1.6MPa, such as those in the petroleum, chemical, power, papermaking, water supply and drainage, and municipal construction industries.

The working principle of SD341X flanged telescopic butterfly valve

Flanged expansion butterfly valves are divided into three types:

A. Standard type: When selecting, design and install in accordance with the design specifications of the expansion joint. If limit bolts are required, please specify during the design.

B. Fixed limit type: It can both extend and retract as well as limit, and has the function of fixing the telescopic part to prevent it from expanding and retracting. Its characteristics are multiple functions and a wider range of applications.

C. Extended type: It is to lengthen the expansion joint of the ordinary telescopic butterfly valve to make its length meet the user's required length (excluding the expansion amount). Its feature is that when the old pipeline is renovated, the valves on the original pipeline need to be updated and replaced. There is no need to cut the lining of the connection part of the valve on the original pipeline; it can be replaced. When selecting the extended type, limit measures should also be considered. If limit measures are required, please specify them during the design.

Product features of SD341X flanged telescopic butterfly valve

The sealing parts can be adjusted and replaced, and the sealing performance is reliable.

2. It features a reasonable structure, flexible design, light weight, labor-saving and quick opening and closing.

3. The telescopic butterfly valve not only compensates for the thermal expansion and contraction caused by the temperature difference in the pipeline, but also provides convenience for the maintenance, installation and replacement of the valve.


The SD341X flanged telescopic butterfly valve features automatic compensation for the thermal expansion and contraction of pipelines and convenient installation and removal. It is an ideal device for regulating flow and cutting off fluid in industrial pipelines with temperatures below 120℃ and nominal pressures below 1.6MPa, such as those in the petroleum, chemical, power, papermaking, water supply and drainage, and municipal construction industries.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.




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