With more than 30 years of casting history, Wenzhou Longzhu Industrial Co., Ltd. has a large number of experienced casting engineers and technicians. We can produce castings of various sizes, shapes and materials according to the drawings provided by customers, especially in the field of valve castings. Cooperate with Fortune 500 companies for many years.
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Resin sand casting, etc.
Sales manager： Mrs.peng E-mail: firstname.lastname@example.org
Tel： 0086-0577-86621768 Fax： 0086-0577-86621935
Address ： No.19 Longyong Road.Xiongxin Village. Longwan,Wenzhou,Zhejiang,China
The butterfly valve, also known as the flap valve, is a simple regulating valve. The butterfly valve that can be used for the switching control of the low-pressure pipeline medium means that the closing member (valve or disc) is a disc that rotates around the valve shaft to achieve opening and closing a kind of valve.
Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Mainly cut and throttle on the pipeline. The butterfly valve opening and closing member is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjusting.
1. The use pressure and working temperature range are small.
2. Poor sealing.
The butterfly valve can be divided into a bias plate type, a vertical plate type, a slant plate type and a lever type according to the structure.
Available in sealed form, both soft and hard. The soft seal type is generally sealed with a rubber ring, and the hard seal type is usually sealed with a metal ring.
According to the connection type, it can be divided into flange connection and clip type connection; according to the transmission mode, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
Wenzhou Longzhu Industrial Co., Ltd. (Longzhu) is located in Wenzhou Xiongxin Industrial Zone, next to Yaoxi Scenic Zone in the south, 5km away from Wenzhou Airport, 12km away from Wenzhou Railway Station and 3km away from Wenzhou Longwan Wan-ton Wharf, enjoying beautiful sceneries and convenient transportation. Founded in 1986, Longzhu has gone through thirty years of winds and rains and developed into one of Wenzhou's largest professional casting enterprises integrating the R&D, casting, machining and marketing of valve castings and machine parts. Moreover, the company has been awarded "Model Integrity Enterprise", "Honest Private Business", "Zhejiang AAA-grade Credit Enterprise", and "Enterprise with Harmonious Labor Relation in Longwan District", Wenzhou Well-known Trademark and Zhejiang Well-known Trade Name. Moreover, the company was rated as National High-tech Enterprise in 2015.