A, head spin ball valve installation using the matters needing attention

Head spin ball valve storage installation and two-way pressure spherical rotation valve (ZXQF3247HR) and spin ball valve (GWXDF3204Y) these two products are similar.

1, head spin ball valve shall be closed during the process of storage and transportation, seal face daub grease to protect.

2, the valve should be removed before installed chip, oil pollution, sundry.

3, head spin ball valve installation disc should be closed.

4, 1 dn range around the valve does not allow at the same time equipped with butterfly valve and the elbow, reducer, reducing and threaded pipe.

5, head spin ball valve of large diameter valves should not be suspended installation, should be the base or the support.

6, both used for opening and closing valve and control valve, control valve, head spin ball valve working range most of the best for the opening of the valve plate between 25 ° ~ 85 °.

Second, head spin ball valve is so far the only real physical significance in large diameter valves spin ball valve, its main advantages are:

1, head spin ball valve 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, 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, head spin ball valve can automatically to align the center (adaptive), and can automatically the process for abrasion;

4, close 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. Open head spin ball valve core projection section continuous 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, the main 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;

The head spin ball valve at the same time as the 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, the main types: this valve of the main types are: worm gear and worm, electric, pneumatic, hydraulic, among them and the hydraulic valve suitable for places that have requirements of liquid pressure gas source and the source.

Four, how it works: head spin valves two-way flow is the main function of the valve can not only in positive pressure sealing good, when 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 stem, head spin ball valve 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.

Head spin ball valve on the market at present the largest and only to DN400; Gate valve, no adjustment function to adjust flow exist gate off great dangers, and large-diameter gate also with its huge shape and height, the difficulties in the manufacturing and transportation. Compared with the butterfly valve and gate 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.

Four parameters, cutting ball valve products

Structure: the floating ball valves

Head spin ball valve applicable medium: water

Spare parts and accessories: sphere

Purpose: the overflow

Head spin ball valve type (channel) : two general formula

Function: compressor

Head spin ball valve material: carbon steel

Standard: gb

Flow direction: one way

Head spin ball valve connection forms: threads

Nominal diameter: DN15-600 mm (mm)

Environment: high pressure

Working temperature, low temperature ℃

Head spin ball valve drive mode: hydraulic control