Industrial Valves its establishment in 1984, DR Valve Co., Ltd. has developed valves for power plants, valves for ultralow temperature, and valves for high temperature and high pressure through ceaseless R&D and standardized qualitycontrol systems, exporting to over 10 countries around the world, as well as selling in the domestic market. DR Valve supplies the best products to various industrial sites, such as refining and petroleum, chemicals, power plants, gas and LNG industry, desalination plants, ocean industry, environmental plants, etc.


Triple Offset Butterfly Valve (Butterfly Valve)

Butterfly valve has a simple structure, is easy to operate and widely used for flow path blocking and flow/pressure control. However, the disk surface of the valve is wider than that of other valves, and deflection of the disk is generated due to the working pressure. At this time, the disk is press-fitted into the seat ring like a wedge and, as a result, the operating torque is very high, causing a large impact sound and vibration when the valve is opened and closed.
In severe cases, the rotation axis of the valve may be distorted. In order to solve these problems, this product has a triple offset structure in which the shape of the disk is asymmetrical, so that when the valve is closed, the disk and seat ring is of the structure in line contact at the endpoint. Therefore, the airtight performance is excellent and there is hardly abrasion of the seat ring, which is a chronic problem of conventional products. The triple offset structure has drastically reduced noise and vibration resulting from high operating torque, which had been a problem in the conventional products, by dispersing the surface pressure acting on the disk surface in the system requiring high pressure (differential pressure) to the disk.


Easy V-Notch Ball Valve (V-Ball Valve)

The characteristics of the product are the flow control capability, which is an advantage of globe valves, and a simple structure that is a merit of ball valves. This product has solved the shortcomings of globe valves, which are expensive, relatively low flow rate, the cavitation phenomenon caused by the bent pipe and generation of noise and vibration, and the disadvantages of ball valves including sludge inflow between ball and body and seat ring breakage in the fluids containing fiber (paper pulp)-like sludge at the time of valve locking.
The Easy V-Notch Ball Valve has a seat ring installed on one side only, and the ball has a “V”-shaped notch to control the fluid to the EQ%. The shape of the “V” notch is designed to fit for the characteristics of fluids so that the control capacity can be changed according to such characteristics. In addition, due to the offset structure, the seat ring and the ball are in line contact at the closed end. Thus, the airtight performance is excellent and there is almost no abrasion of seat ring. As it is like a sharp cutter, “V” notch displays very favorable performance for use in fibrous piping lines like paper (pulp) line. | Blog Magazine of korean-machinery, brands and Goods

Wafer Style Butterfly Valve with UL, FM coating the disc with EPDM rubber (elastic body), the restitutive power of this wafer style butterfly valve (HPBO-W1) between the valve’s body and rubber helps to maintain air tightness. A disc rotates 90 degrees to control the fluid in motion, maintaining high responsiveness under operations with low friction loss and low torque.
Fast operation is possible thanks to simplified opening/closing processes. This valve is applicable to control of low/high-pressure water. It is mostly used for firefighting pipelines and industrial water lines.
It is designed for use in fire protection systems where a visual indication is required as to whether the valve is open or closed. They are used, for example, as system, sectional and pump water control valves, and are suitable for installation between ANSI Class 125/150 flanges as well as PN10/16 flanges without the need for flange gaskets. The supervisory switches transfer their electrical contacts when there is movement from the normally open or normally closed disc position during the first two turns of the handwheel.

The Fire protection valves of Sam Chang Foundry Company obtained UL and FM certifications back in 1987, for the first time in Asia. Since then, additionally the company has acquired a range of certifications such as ULC, CE, VDS, GOST, EAC, and CCCF.
The company is building a systematically vertical production system from casting, to machining, assembling to inspection for butterfly valves and check valves etc. It is exporting to 20 plus countries around the world under long-term supply contracts with multinational corporations. | Blog Magazine of korean-machinery, brands and Goods

High-performance butterfly valve

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[INQ. NO. 1411M19] MTS specializes in manufacturing of large valve, special valve & damper. Based on rich experience of delivering such very competitive products to domestic conglomerates including POSCO, Hyundai Steel, and their affiliated companies, MTS has also careers of exports to Japanese Sumitomo Metal Industries of Nippon Steel Corporation. As a leading company in Korea, all the company’s executives and employees make their utmost efforts to ensure that the company becomes a leader in this business.

High-performance-butterfly-valve Reflecting the clients’ requirements in the process of design, MTS manufactures topquality valves applying advanced technology. Competitive prices and shorter delivery date over rival companies make it possible for the company to continuously elevate its presence in the global market. Now high-performance butterfly valves (50A-3000A) are leading the company’s advances into overseas markets, with some noticeable features. MTS now can mass-produce them by using casting. It is applicable from room temperature to high temperature (-30°C~350°C). And also it is possible to directly apply an actuator. | Blog Magazine of korean-machinery, brands and Goods