Orbital plug valve

Orbital plug valve, also known as bevel gear drive general valve, is suitable for aviation kerosene, crude oil, light oil, natural gas, liquefied gas, pipeline gas, chemical medium and other pipelines, as an ideal device to cut off the medium. The key to the working principle of the valve with double shutoff, double shutoff and relief function is the action of the two sealing slides installed on the cock.

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Plus type fully equipped

CNC machine tools ,large vertical lathes, drill press, milling lathe grinding machine , Welding machine , separate metal working workshops and many general machine tool etc.

Multiple tests

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.

Passed ISO certification

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) .

Industry Association Member

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.

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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.

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With relief device and function

The overpressure relief function of the valve cavity is in accordance with API 6D. All double-sealed valves must have relief devices and functions. The vented pressure difference is caused by changes in ambient temperature. When the double-sealed valve is closed, the volume of the medium accumulated in the valve cavity expands with the increase of ambient temperature, and the pressure gradually rises. If the pressure difference is not released in time, it will have a serious impact on the operation of the valve, or even appear The expansion of the valve causes serious hidden dangers to the safety of the system.

Three pressure relief systems for orbital plug valves

Orbital plug valves usually have three pressure relief systems.
a. Manual pressure relief system (used for manual operation of valves).
b. Differential pressure relief system (used for manual and electric operation valves).
c. Automatic pressure relief system (used for electrically operated valves).

Orbital cock key parts processing

The special process of key parts and components is processed (grinding) and hard chromium plating of the inner cavity of the valve, so that the inner cavity of the valve has rust resistance, erosion resistance, abrasion resistance and corrosion resistance. After the slider is machined (before pressing the fluorine rubber), it is treated with hard chromium plating to make the metal sealing surface of the slider have rust resistance, erosion resistance, abrasion resistance and corrosion resistance. After mechanical processing, the cock is nickel-plated, and the cock and the upper and lower shafts are resistant to rust and corrosion.

Unique L-shaped groove structure of orbital plug valve

The operating mechanism of the valve and the operating mechanism (screw sleeve) of the self-locking orbital plug valve adopt a unique L-shaped groove structure. Separate the axial linear movement of the cock from the 90° rotation movement, which makes the valve operation flexible and light. The gear transmission mechanism used is self-locking, and the trapezoidal thread is a heavy-duty trapezoidal thread, which can bear a greater load.

Frequently Asked Question

Do you have any question?

Usually available in cylindrical or conical shapes, plug valves are quarter-turn manual motion valves used for stopping or starting the flow of fluid. They offer on-off, diverting, as well as basic moderate throttling services.

Plug valves offer better performance in the term of cutting than ball valves, but that doesn't show obviously. The sealing surface of the plug valve is much larger than the ball valve and supplies a better sealing effect, but a greater torque and small diameter.

When an ORBIT valve begins to open, the core tilts away from the seat and line flow passes uniformly around the core face. This eliminates the localized high-velocity flow that typically creates uneven seat wear in ordinary ball, gate and plug valves. The core then rotates to the fully open position.

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