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.
GS-C251.0619,WCB.WCC,LCB,LCC,LC3,4C,4D,WC6,C5,C12, C12A,CA15，CF3,CF8(-196’C),CF3M,CF8M,CF8C,CD4MCu,CK3MC uN,ZG200-400,ZG230-450,ZG270-500,2G40Cr1,ZG20CrM0.2G15C r1Mo1V,ZG35Cr1MO.ZG16CrMOG(1Cr5Mo),ZG1Cr13,ZGOCr18Ni9 Ti.5A.KmTB Cr26.4A
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 is a valve that uses a disc type opening and closing member to reciprocate about 90° to open, close or adjust the flow of the medium. The butterfly valve is not only simple in structure, small in size, light in weight, low in material consumption, small in installation size, small in driving torque, easy to operate and fast, and also has good flow regulating function and closed sealing characteristics. It has been developed in the past ten years. One of the fastest valve varieties. Butterfly valves are used in a wide range of applications. The variety and quantity used are still expanding, and the development of high temperature, high pressure, large diameter, high sealing, long life, excellent regulation characteristics, and one valve multifunction. Its reliability and other performance indicators have reached a high level.
All the time, Longzhu adheres to a quality policy of "Treating People with Sincerity, Seeking for Prosperity with Quality" and a principle of "Reputation First, Quality First", sets up an industry-leading modern quality inspection and test center, and tests outgoing products strictly with direct-reading spectrometer, fluorescent magnetic particle inspection, all-digital ultrasonic fault detectors, screen display hydraulic pressure universal testers, radiographic testing machine, coordinate Measuring Machine, molten steel thermocouple thermometer and other inspection devices. So far, Longzhu has obtained the CE certification of the EU and the ISO9001 Quality Management System certification relying on its reliable product quality.
1. It is convenient, quick, labor-saving, and has low fluid resistance. It can be operated frequently.
2. Simple structure, small size, short structure length, small size, light weight, suitable for large diameter valves.
3. The valve seat channel has a large effective flow area and a small fluid resistance when fully opened.
4. The opening and closing torque is small. Since the butterfly plates on both sides of the rotating shaft are basically equal by the medium, the torque is generated in the opposite direction, so the opening and closing is relatively labor-saving.
5. The sealing surface material is generally made of rubber and plastic, so the low-pressure sealing performance is good.
1. How about your products quality?
This is our advantage, we are one of the best suppliers.
2. Where are you shipping from?
3. What is the custom product process?
1. Help customer to design, making drawing;
2. Providing free samples + dimension inspection report + material report...;
3. Checking raw material, and inform customer before mass production;
4. Informing customer production schedule weekly;
5. Arrange shipment, and Inform customer in advance 7 days before finishing the order.