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Introduction of small diameter welded globe valve

2020-11-08 16:26:03
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New small caliber Welded stop valve Is to replace the traditional small diameter welding Globe valve And developed a new type of thermal power plant. The product design has the following characteristics:

New small caliber Welded stainless steel globe valve characteristic

The sealing pair changes the conical surface sealing structure into a spherical sealing system structure, and the sealing pair is well matched in any case;

The sealing surface of valve disc and valve body is made of high hardness gold-plated material by special process. The hardness of valve disc sealing surface can reach HRC60 (generally, the hardness of sealing surface of power station valve is about HRC35-40) Even after the valve is opened and closed frequently, the sealing surface is still intact without any dents, which changes the deep and irregular dent on the sealing surface of valve disc after pressure test of traditional products, which greatly improves the sealing surface and service life of the valve, and greatly improves the anti cavitation ability of the sealing surface;

After the valve is closed, the valve stem enters into a high temperature environment, and the medium will expand slightly due to heat expansion, resulting in the increase of the specific pressure between the sealing surface of the control valve body and valve disc (or even crush the sealing surface), and the opening torque can be increased. New products provide reference to the products of foreign enterprises? (such as Okano high-temperature and high-pressure stop valves) are designed to learn to absorb the thermal expansion of the valve stem by means of compensating the two ribs of the bracket;

 Welded stop valve

The structure of the stem nut is improved. The upper hole of the bracket is directly cast with aluminum bronze gold (the hole in the middle of the copper alloy is cast), and then the trapezoidal thread is directly machined on the upper hole of the bracket, which not only improves the coaxiality (eliminates the accumulated error of coaxiality), but also improves the operation flexibility and greatly reduces the consumption of copper alloy;

The manual valve adopts 3.5 mm steel plate stamping hand wheel (imported from German technology), its weight is reduced, the strength and toughness of the hand wheel are greatly improved compared with the cast iron hand wheel, so as to improve the anti accidental impact ability of the hand wheel in transportation. The cooling area (surface area) of the hand wheel is large, the operating temperature is low and no heating is generated; Stainless steel globe valve ;

The use of packing gland to open the pressure plate is easy to operate; there is a small protuberance at the upper end of the opening, in order to ensure that the upper end of the bolt will not slide and impact force accidentally, the safety and reliability are improved;

The angle of the cone surface (15 ° is changed to 30 ° for the upper part of the packing press plate and the packing sleeve) is increased through the spherical surface, so that the friction cone surface of the pressing plate can be developed when the loose joint bolts and nuts at both ends are not tightened synchronously and unevenly, so as to ensure that the pressing sleeve can not be pressed vertically and evenly Packing, and avoid the students to produce the social phenomenon of sticking the valve stem surface due to the deviation of the pressing sleeve;

A small amount of clearance between the handwheel nut and the lower side of the handwheel can be increased due to the loose nut on the upper side of the handwheel to avoid possible influence of the loose nut on the handwheel body;

The connection of valve body and bracket can adopt thread cold rolling, flexible grinding, drilling and milling of multiple parts and multi cutters, powerful embedded rolling of powder metallurgy, and advanced production technology such as a new finished product method for the design of body and cover, so as to improve the processing efficiency and service quality. Compared with the conventional product market, it can improve the structural performance and service life of the company's products At the same time, it can greatly reduce the manufacturing cost and sales price of financial products.

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Jiangsu Zhonghe Valve Co., Ltd

Service hotline: 0515-87282699

Fax: 0515-87939900

E-MAIL :zhonghe_ valve@163.com

Address: a2202, No. 99, Shehe East Road, Funing County, Jiangsu Province

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