What is rising stem gate valve?

What is rising stem gate valve?

The opening and closing part of the gate valve is the gate. The movement direction of the gate is perpendicular to the direction of the fluid. The 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 50, and 2°52' when the medium temperature is not high. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a small amount of deformation to improve its manufacturability and make up for the deviation of the sealing surface angle during the processing. The plate is called an elastic gate.

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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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Metal to metal sealing.No weak parts (such as springs) are required in order to obtain perfect sealing. Sealing is obtained mechanically - independent on line pressure.


Peculiarity of Rising Stem Ball Valve

Peculiarity of Rising Stem Ball Valve is that when the ball is in close position, the tight sealing between the ball and the single fixed seat is granted in both directions. Rising Stem Ball Valves can be operated with manual gear or with electric, pneumatic or hydraulic actuators. 

Peculiarity of Rising Stem Ball Valve

Rising stem ball valve

Main features: With rising stem and mechanical cam design to achieve the tilt and turn action, eliminates friction and abrasion between body seat and ball surface. Single seat design can eliminate the problem of excessive pressure trapped in the body cavity. Rising stem ball valves are widely used in those plants where are with high temperature, high pressure, frequent operation, zero leakage, emergency shutoff, hazardous medium isolation, etc. Some typical applications such as molecular sieves exchange valve, hydrogen dispenser inlet and outlet valve, emergency shutoff valve, measuring pipeline shutoff valve,etc.

Rising stem ball valve

Features of rising stem gate valve

Light weight: The body is made of high-grade nodular cast iron, which is about 20% to 30% lighter than traditional gate valves, and is easy to install and maintain.
Flat-bottomed gate seat: The traditional gate valve often deposits in the groove at the bottom of the valve due to foreign objects such as stones, wood, cement, iron filings, sundries, etc. after the pipe is washed with water, which can easily cause water leakage. The bottom of the elastic seat-sealed gate valve adopts the same flat-bottom design as the water pipe machine, which is not easy to cause debris siltation and makes the fluid flow unimpeded.
Integral encapsulation: The gate adopts high-quality rubber for the overall inner and outer rubber. European first-class rubber vulcanization technology enables the vulcanized gate to ensure accurate geometric dimensions, and the rubber and ductile cast gate are firmly connected, and are not easy to fall off. Good elastic memory.
Precision casting valve body: The valve body adopts precision casting, and the precise geometric dimensions make the inside of the valve body without any fine machining to ensure the sealing of the valve.

Features of rising stem gate valve
Frequently Asked Question

Do you have any question?

Rising Stem Ball Valve – RSBV. Valbart RSBV Rising Stem Ball Valves are the oil and gas industry’s choice for applications requiring a mechanically energized metal or soft seat to prevent losses from process contamination or material leakage.

ORBIT rising stem ball valve incorporate a proven tilt-and-turn operation that eliminates seal rubbing, which is the primary cause of valve failure. The absence of seal rubbing during both opening and closing means easy, low-torque valve operation and long-term reliable performance.

When an ORBIT rising stem ball valve is closed, the core is mechanically wedged tightly against the seat, ensuring positive shutoff. When a valve begins to open, the core tilts away from the seat and line flow passes uniformly around the core face.

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