Two-way flow cutting ball valve product advantages:

1, not only can reliably shut off in positive pressure, the reverse pressure or reverse pressure is greater than the positive pressure can also reliably shut off;

2, two-way flow head spin ball valve on the sealing pair two seal can be used according to the different hardness of space plasma spraying, the etheric laser sputtering, vacuum protection permeability after welding and other advanced technology to form martensite stainless steel, austenitic stainless steel, hard alloy, functionally gradient materials such as metal ceramics, artificial diamond;

3, can automatically to align the center (adaptive), and can automatically the process for abrasion;

4, two-way flow cutting ball valve closing make full use of the energy of the medium in the valve, automatic high sealing specific pressure, make the high hard seal deputy to achieve reliable zero leakage;

5, instantly shut down, no friction between instantly open the seal. Projection section head spin ball valve open valve core continuously in condensed and back, opened the initial back faster than the inside shrink. Closing valve core projection section and expanding, closed initial inflation rate is greater than the forward rate, closed end of the forward rate is greater than the inflation rate. With eccentric and ball valve, cut-off valve, the characteristics of wedge gate valve;

6, two-way flow head spin ball valve body structure similar to butterfly valve, has the characteristics of the structure of the butterfly valve is short, small volume, thus can manufacture large diameter, super-large diameter, large caliber valve;

Two-way flow to smash the ball valve and butterfly valve, ball valve, gate valve and globe valve function and advantages, and have their own completely different power and advantages. Small volume, light weight, convenient transportation, installation, maintenance, maintenance, reliable operation and a series of merits, become a major technological revolution of the valve industry.

Three main types, two-way flow head spin ball valve and working principle

1, the main types: the bidirectional flow head spin ball valve of the main types are: worm gear and worm, electric, pneumatic, hydraulic, pneumatic valve and hydraulic valve is suitable for places that have requirements of liquid pressure gas source and the source.

2, how it works: two-way flow head spin ball valve is the most important function of can in a positive pressure seal is good, in a reverse pressure or reverse pressure is greater than positive pressure can also be properly sealed. When positive pressure, medium pressure push valve plate moving forward, deformation of the valve stem, valve plate seal face close to the valve seat sealing surface pressure, steps into the body seat, and good sealing. When reverse pressure, medium pressure push valve plate backward, deformation of the valve stem, medium pressure to push the seat backward at the same time, the valve seat sealing surface close to the valve plate seal face pressure, good seal.

Most of the valve pipe network system, mainly used for medium truncated and adjustment, this part of the head spin ball valves in the system as a whole accounted for more than major, dosage, more durable, cost-effective for valve at the same time should be adjusted when medium positive flow and load break, while the differential transform or maintenance can prevent the backflow medium, which has a two-way cutting function. A few days ago, this part of the head spin ball valve on the pipeline network system, main application of cut-off valve, gate valve, butterfly valve and ball valve. Globe valve and gate valve, two-way cutting function, head spin ball valve with good sealing performance and using life is pretty good, all the valve is one of the first, but stop valve door type structure of congenital restrictions, appearance is big operation torque, production of large diameter, the largest on the market at present only to DN400; Head spin ball valve, no adjustment function to adjust flow exist disc off the big danger, and the appearance of large-diameter gate also to its huge and height, the difficulties in the manufacturing and transportation. Butterfly valve compared with head spin ball valve opening and closing time is short, the operating torque is small, light weight and small installation space features, such as part of the division of labor with butterfly valve gate valve instead. However, has been the butterfly valve sealing performance has not fully meet the market requirements, in addition to the midline rubber lining can be two-way sealing butterfly valve can to a certain pressure range, other basic for uniflow structure. The midline structures restricted by rubber can't popularity. Improved, appear on the market has both elastic piece structure of stainless steel butterfly valve, but its high cost. Now head spin ball valve is mainly used in petroleum, natural gas, coal gas medium such as an important line, in general network, especially water system application.

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