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Pipeline failure and maintenance-2

Pipeline failure and maintenance-2

How to check and diagnose the pipeline?

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2024

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Pipeline failure and maintenance-1

Pipeline failure and maintenance-1

What are the common repair tools for pipeline maintenance? Answer: the tools for repairing pipes include welding tools, lifting tools, installation testing tools, cutting tools, tapping tools, beveling machines and other special tools.

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2024

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03

Valve repair and installation-3

Valve repair and installation-3

What are the components of the valve?

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2024

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03

Valve repair and installation-2

Valve repair and installation-2

What are the general procedures for valve maintenance? Answer: the general procedures for valve maintenance are as follows.

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2024

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03

Valve repair and installation-1

Valve repair and installation-1

How to select valves? Answer: the valve in the pipeline is selected according to medium type, pressure, temperature and flow (or pipe diameter) and other factors. Gate valve and stop valve are only used to fully open and close the medium of various pipelines and equipment. Throttling is not allowed to avoid quick wear of closing parts and seat rings. With the change of temperature, the pressure, concentration and corrosion of the same medium are also changing. Code of maximum working pressure at a certain temperature: the number added at the lower right corner of P word is the integer divided by 10 for medium temperature, and the value in the table is the maximum working pressure at a certain temperature. If the medium temperature is 240 ℃, the maximum working pressure is expressed as P. Carbon steel valves below 200 ℃ can be selected according to the nominal pressure; when the temperature increases, the distance between the maximum working pressure and the nominal pressure becomes larger and larger, to 450 ℃, the maximum working pressure is half or more smaller than the nominal pressure. Such a large gap must cause the attention of valve users. When the temperature is high, do not only look at the nominal pressure, but also understand the maximum working pressure at this temperature. What are the key points of valve selection?

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2024

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What are the selection and application of metal bellows for valves? - 3

What are the selection and application of metal bellows for valves? - 3

Answer: introduce the application, design and selection of metal bellows in stop valve, gate valve, regulating valve, safety valve and ball valve. The solution to the problems in the use of metal bellows for valves is given.

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Add: No.2469，Binhai 6Rd,Binhai Industrial Park ,Wenzhou China 325024    
TEL:  +86-577-5661-4886
FAX: +86-577-8977-3128  
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Skype: samliu123321

Email : sam@samflow.com
Email : sam@samflow.com

SAMSON Flow Equipment(WENZHOU) CO.,LTD. 

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