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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The working principle of the orbital plug valve

When the orbital plug valve is fully opened, the passage of the plug is aligned with the passage of the valve body, which can ensure the ideal lowest pressure drop. Turn the handwheel plug to turn toward the valve, and at the same time drive the valve plate to rotate 90 degrees. When you continue to turn the handwheel, the plug will press down to open the valve to both sides, and the valve plate will tightly press on the valve seat. Close the valve; when the handwheel rotates in the opposite direction, first move the plug upwards to disengage the valve plate from the valve seat, continue to turn the handwheel, make the plug drive the valve plate to rotate 90 degrees, and finally the passage of the plug is the passage of the valve body Align so that the valve is in a fully open state.

Orbital cock integral casting structure

Integral cock structure The cock of the orbital cock valve adopts an integral casting structure. The cock is integrated with the upper and lower shafts. When one-way compression is applied, the upper and lower shafts have sufficient rigidity, strength and bending resistance. The upper and lower shafts of the cock and the bottom cover and the valve cover are equipped with bearings. The machining accuracy and the hardness of the bearing ensure the accurate positioning of the upper and lower shafts, and prevent the upper and lower shafts from friction and wear caused by the pressure of the medium. , Reduced friction.

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.

Double sealing structure of middle flange

Orbital plug valves are mostly used for aviation kerosene, natural gas, liquefied petroleum gas, refined oil, etc. Because aviation kerosene and other media have strong permeability and are flammable and explosive, in order to prevent external leakage of the medium, they are used at the middle flange. Double sealing structure with O-ring and spiral wound gasket

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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