CN HDFM - Valve Information, Valve Technology

Abstract: In some rely on self-closing valve hammer the station, butterfly operation a few years later, appeared in the closing process less than fully closed position of valve related failures. For this analysis, a reliable valve automatically close the program, the program not only ensures the normal valve closure on the station’s maintenance, operation provides security, and better protect the valve spindle and bearing, extend the butterfly valve of use.

Key words: butterfly valve; off failure; cause analysis; treatment

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Posted in Technical Literature | Tagged Butterfly valve

Abstract: Installation, classification and characteristics of common pipeline valves were discussed. Selection and installation steps of common pipeline valves were emphatically introduced.

Key words: Valve; Installation; Classification; Characteristics

Valve is used to control the flow of fluids in pipes, pressure and flow of the basic components. Valve at the pipeline fluid conveying system control unit, which is used to change the channel section and flow direction of medium, with the diversion, cut-off, adjustment, throttle, just back, diversion or overflow relief functions. For fluid control valves, from the simplest cut-off valve Dao Ji Wei complex of automatic control systems used in a variety of valves, their types and specifications range, the valve nominal diameter instrument valves Da from tiny to Path up to 10m of industrial pipeline valves.

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Posted in Technical Literature | Tagged Valve • Valve selection

Project Name: High Temperature Electric Butterfly
Date: September 17, 2010
Tender No.: DYKKJ-HT-SB-2010-069
1. Hubei large yukou Chemical Co. Ltd. (tender) to make big yukou Hubei Chemical Co., Ltd. sulfuric acid plant expansion project the necessary transformation of part of the equipment and related services to domestic public tender. The use of non-electronic tender bidding, qualified bidders are invited to participate in the bidding.
2. Tendering product name, quantity, and main technical parameters: Name: High Temperature Electric Butterfly Quantity: 17 sets Delivery: 150 days. Main technical data see the fourth part of the tender documents.
3. Tender documents Price: 500.00 yuan, refundable after the sale tender; an extra domestic postage 100.00 yuan. Bidding will promptly tender documents by express mail, but mail will not be responsible for the file late or missing.
4. Buying Bidding Documents: September 17, 2010 ~ October 8, 2010
5. Bidding Documents: Hubei Province, Hu Jizhen Zhongxiang City, Hubei large yukou Chemical Co., Ltd.
6. Tender closing time and opening time: at 10 o’clock on the October 8, 2010 (Beijing time)
7. Bid Opening Location: City, Hubei Province, Hu Jizhen Zhongxiang the Hubei Chemical Co., Ltd. Meiyukou Conference Room
Tender by: Hubei large yukou Chemical Co., Ltd.
Address: Zhongxiang City, Hubei Province, Hu Jizhen
Zip Code: 431910
Contact: Wu Xiaoming / LIU Lu
Tel :0724-4890678 / 010-84527311
Fax :0724-4890124 / 010-84527313
Account: 42001667236059168988
Tax Number: 42088177758069X
Bank Name: Phosphorus Chemical Engineering Branch of China Construction Bank Jingxiang
Bank Address: Zhongxiang City Hu Jizhen Jingxiang East living area

Posted in Industry News | Tagged China • Electric butterfly • High temperature valve • Valve tender

Abstract: The current technology for valve defects in the insulation, sealing materials and sealing of its structure is improved so that in the high temperature operating conditions to ensure the sealing performance, and greatly increase their service life.

Key words: thermal insulation ball valve; seal structure; seal material; temperature

With the continuous development of domestic industry, the use of insulation on the pipeline have increased the demand for ball valve, ball valve on the insulation requirements have become more sophisticated, users choose insulation ball valve, the valve has no special attention to the good sealing properties to prevent media leaks. Since the reliability of imported ball better insulation, so the user of important parts of many imported insulation ball valve, ball valve, but disheartened by the import protection is expensive, long lead time, service is not convenient, seriously affect the operation of the entire pipeline. In order to reduce the pipeline cost, to achieve domestic production of thermal insulation ball valve, domestic manufacturers have been in the quality of domestic insulation ball valve, seal reliability excellence, seeks to replace imported insulation valve. This paper to address the issue of holding ball in the high-temperature analysis and improvement measures.

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Posted in Technical Literature | Tagged Ball valve • Seal structure • Sealing material • Temperature