Hebei Huahui Valve Co., Ltd

BS5163 Resilient Seated Gate Valve Big Size Gate Valve   Features The ductile iron core is fully vulcanized with EPDM rubber, no iron parts are exposed to the medium and the excellent rubber vulcanization prevents creeping corrosion underneath the rubber. Guides in the wedge and on the valve body ensure a uniform closure, safe operation ensured as the guides prevent overloading of the stem. Stainless steel stem with rolled threads for high strength. The valve can replace stem seals under pressure. Full bore. Body inside and outside fusion bonded epoxy coating with excellent corrosion resistant performance. Big Size Gate Valve Standard Design standard BS5163, EN1171 Flange drilling standard EN1092-2 PN10/PN16 Face to face standard EN558-1 Series 3 Hydraulic test standard EN1074-1 and 2 /EN12266   Seat:1.1*PN(in bar), Body:1.5*PN(in bar)

Flanged Gate Valv e Gate Valve Parts Main gate valve parts: body, seat, gate, stem, bonnet and actuator. The main operation mechanism is very simple. When the handwheel is turned, it rotates the stem, which is translated into the vertical movement of a gate via threads. Types of Gate Valves The working principle of manual gate valve: turning the hand wheel, through the thread of the hand wheel and the valve stem, raise or lower the valve plate connected with the valve stem to open and close. Classified by shell/body material, gate valves can be divided into: Metal material valves: such as carbon steel valves, alloy steel valves, stainless steel valves, cast iron valves, titanium alloy valves, Monel valves, copper alloy valves, lead alloy valves, etc. Metal valve body lining valves: such as rubber-lined valves, fluorine-lined valves, lead-lined valves, plastic-lined valves, and enamel-lined valves. Non-metallic materials valves: such as ceramic valves, glass valves, plastic valves. How ...

As a   Ball Check Valve Leading Supplier , share with you. Multi-function Check Valve (1) Quality control of the main body blank. All parts of this valve are forgings. The forging process is carried out in strict accordance with the forging process regulations and process cards, and the initial forging temperature, final forging temperature, deformation degree and deformation speed are strictly controlled. The cooling method performs cooling. Chemical composition analysis, mechanical property test, intergranular corrosion test, metallographic analysis of the forged product, after analysis, test and determination, all meet the corresponding standards. The quality of forgings is guaranteed by ultrasonic inspection and liquid penetration inspection. Forgings are 100% ultrasonically inspected and evaluated in accordance with RCC-M requirements, and liquid penetration inspections and evaluations are performed on all surfaces of the forgings. (2) Welding In order to improve the quality o...

As a   Ball Check Valve Leading Supplier , share with you. Multi-function Check Valve (1) Quality control of the main body blank. All parts of this valve are forgings. The forging process is carried out in strict accordance with the forging process regulations and process cards, and the initial forging temperature, final forging temperature, deformation degree and deformation speed are strictly controlled. The cooling method performs cooling. Chemical composition analysis, mechanical property test, intergranular corrosion test, metallographic analysis of the forged product, after analysis, test and determination, all meet the corresponding standards. The quality of forgings is guaranteed by ultrasonic inspection and liquid penetration inspection. Forgings are 100% ultrasonically inspected and evaluated in accordance with RCC-M requirements, and liquid penetration inspections and evaluations are performed on all surfaces of the forgings. (2) Welding In order to improve the quality o...

As a   Gate Valve Supplier , share it with you. If you don't pay attention to these problems when installing the butterfly valve, it will cause big troubles in the future use. Today, the butterfly valve manufacturer will tell you what are the precautions. DIN F4 Gate Valve Butterfly valve is nothing more than adjusting flow and pressure. The adjustment of the valve is achieved through the loss of pressure. The relationship curve between the flow rate and the rotation angle of the butterfly valve is like an integral symbol, which belongs to the parabolic shape. When the angle of rotation is increased under the special circumstances where the opening of the butterfly plate is greater than 60°, the change in flow rate is small. Similarly, there is a similar situation when the disc rotation angle is less than 15°. In order to achieve a good adjustment effect, the following points should be paid attention to: A. The loss of the regulating valve accounts for at least 1/3 of the system. B...

Generally, in the daily processing of butterfly valves, processing errors are inevitable, and what we have to do is to minimize the processing errors in this process to minimize the impact on the quality of the finished product. So, how to reduce errors during processing? As a   Butterfly Valve Supplier , share with you. Double Eccentric Butterfly Valve 1. In the process of production and processing, scientific processing technology and advanced processing equipment are used to reduce or eliminate errors generated during processing. 2. Transfer the machining error, that is, transfer the error to the direction and other parts that have little or no impact on the machining accuracy. 3. The errors in the processing can be evenly distributed to the entire processed surface, so as to ensure that the error in a certain part is too large. 4. A new error can be created artificially to offset the original error. For example, if the original error is negative, a new positive error can be cre...

As a   Butterfly Valve Supplier , share with you. Butterfly valve is a device often used in daily life and production, especially in the petroleum industry, it has played an important role. With the continuous development of the petrochemical industry, there is now an increasing demand for butterfly valves in the market. In fact, it is not only used in the petrochemical industry, but also in many other industries. Therefore, the market demand is very large and the development prospects are also very good. Butterfly Valve Nowadays, domestic butterfly valve production technology has become more and more advanced, with more and more product models and specifications, and the quality and appearance of products have been greatly improved. Although the production cost is relatively high, with the continuous expansion of the market and the continuous expansion of application areas, the demand for butterfly valves is only increasing. Nowadays, butterfly valves are mainly used in the indust...