CNC machine tools ,large vertical lathes, drill press, milling lathe grinding machine , Welding machine , separate metal working workshops and many general machine tool etc.
Material analysis, PMI Material analysis. Chemical analysis. Low temperature test, Tensile Test ,Impact test, Hardness test. Wall thickness test, roughness test. Torque test. NDT Inspection (MT,PT,UT,RT). HIC test ,SSC test . Intercrystalline corrosion Test ,Uniform corrosion Test.
The company is the first one to pass ISO 9001(2008),ISO 14001 ,OHAS 18001 international quality system certificate, China pressure pipe safety registration certificate (AZ), European Union safety registration certificate (CE0036), and American Petroleum Institute Certificate (API 6D) and (API607) .
We are one of the member unit of China Valve Association as well as China Gas Association, member unit of first class supplying network of CNPC and member unit of fittings supplying network of State Power Corporation.
EDVC VALVE CO.,LTD.is a specialized in valve manufacturing enterprise with more than 15 years of history.We main produce Top Entry Ball Valve, Fully Welded Ball Valve, Arc Valve, Aluminum Bronze Valve, Automatic Recirculation Valve, Orbit Ball Valve, Safety Valve, Globe Valve, Tilting Disc Check Valve and Rising Stem Ball Valve etc.
The products have been exported to Austria, France, Germany, United Kingdom ,America, Middle East and Asia, Africa . areas and countries. Moreover, the products are widely used in the fields of oil & gas, Oil refinery, Petrochemical,power station ,Sewage treatment, pharmacy, Paper mills, pipeline industry , mining industry , chemical industry and environmental protection.
We are a professional manufacturer of valves in China, with the aim of "providing the first class products and services". On behalf of all of the members at EDVC Valve, we thank you for the opportunity to earn your business.
There are two major groups in the Aluminum Bronze family. Aluminum Bronze contains approximately 9-14% aluminum and 4% iron while Nickel Aluminum Bronze contains approximately 9-11% aluminum, 4% iron and 5% nickel. That addition of nickel in the latter further improves the corrosion resistance of a material that is already strong in this area.
the temperature scale the attribute of not becoming embrittled at very low temperatures, possessed by most copper alloys, has led to bronzes being widely used for cryogenic services such as liquid oxygen and nitrogen where temperatures below 180°C prevail.
The aluminum bronze gate valve is made of high-grade nodular cast iron, and its weight is about 20%~30% lighter than the traditional aluminum bronze gate valve. It is easy to install and maintain. The gate adopts high-quality rubber for the overall inner and outer rubber. The European first-class rubber vulcanization technology enables the vulcanized gate to ensure accurate geometric dimensions, and the rubber and the ductile cast gate are firmly connected, not easy to fall off, and have good elastic memory. The aluminum bronze gate valve body is made of precision casting, and the precise geometric dimensions make the inside of the valve body without any fine processing to ensure the sealing of the valve.
The opening and closing part of the aluminum bronze gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The aluminum bronze gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used model gate valve form a wedge. The wedge angle varies with valve parameters, usually 5°, and 2°52' when the medium temperature is not high. The gate of the wedge-type aluminum bronze gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce slight deformation to improve its manufacturability and compensate for the deviation of the sealing surface angle during the processing. This kind of gate is called an elastic gate. When the aluminum bronze gate valve is closed, the sealing surface can only rely on the medium pressure to seal, that is, rely on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing.
The ball valves operate with a ball inside the valve body. The ball is moved as to open and close the valve. Ball valves are some of the most common designs used in valve manufacturing.
The aluminium bronze gate valves use a gate to operate the valve. The gate opens or closes the valve and is connected to the valve stem. The valve stem is fitted with a handle which moves the stem in up or down and the gate opens and closes the valve.
Nickel Aluminium Bronze Hydrant Valves Why Use NAB Valves ? The advantages of NAB valvesare significant. They are particularly suitable and useful for seawater servicewhere corrosion performance, particularly where its resistance to chloride pitting is excellent.