How stainless steel ball valves winterizing

How stainless steel ball valves winterizing
1. First need to pipeline materials and equipment within the row of clean, then there are good insulation for stainless steel ball, if there is steam, it is best to be a steam heating pipe
2. If the winter is not used, the valve removed, the liquid material inside the pipe, put a clean, for later use.
3. If not removed, it is recommended that the lowest point of the Ball valves made thermal insulation.
4. If you allow it, you can add antifreeze in the liquid material.
5. If you do not drive, first, the ball clean, and secondly it is the best point is oil, or to open the valve parts antifreeze oil, which is not guaranteed under warm conditions to do so.
6. The material inside the tubes put clear, preferably purged with nitrogen, and then the valve is disengaged, this should be no problem at all.

ball valves need to be cleaned quickly

Stainless steel ball valves should be placed in a vertical or horizontal direction of the pipe
In general, water, acid, and natural gas and other media are more suitable for stainless steel ball valves, high-quality stainless steel ball valve also applicable poorer media, such as some corrosive media, and is suitable for a wide range of areas involving many, so the installation process requires be more careful:
1. Before and pipe connections, pipes need to be cleaned quickly the impurities, lest damage to the seat.
2. The check valve logo, check the integrity of the ball valves. Detect if it will work. The flanged end on both sides of the protective cover is removed, and then the valve is fully opened for cleaning.
3. The installation should also be carried out in accordance with the specified criteria ball machine test, tested after installation to on-line.
4. Stainless steel ball valves should be placed in a vertical or horizontal pipes.
5. After and pipe connections, should be with the specified torque to the flange bolts above symmetrical, evenly tighten sequentially.
6. When installed, must not use a stainless steel ball valve mechanism as part of lifting points, as this might damage the actuator and accessories.

Trunnion ball valves belong to pipeline equipment

Trunnion ball valves belong to pipeline equipment. It solves complex valve structure, poor sealing performance, operating torque, short life technical problems. The trunnion ball valve includes a valve stem in the valve body equipped with, at one end is connected with a poppet valve stem, the Instrument valves stem at the other end is connected to a handle, said valve stem and ball joints provided There trunnion, said trunnion diameter greater than the stem diameter and smaller than the cross-sectional diameter of the spherical valve body, said valve body and connected at the stem is provided with a locking structure, said outer poppet connected with ball joints, ball joints at the outer ends with a card sleeve structure. The utility model has the advantage of: rational design, solid structure, high sealing performance, can effectively reduce operating torque and prolong life.

High-pressure valve Advantages

High pressure ball valves Advantages:
1. Fluid resistance, ball full bore little flow resistance.
2. Simple structure, small size and light weight.
3. Compact and reliable. It has two sealing surface, and valve sealing surface material widely used kinds of plastic, sealing, and can be completely sealed. In the vacuum system it has also been widely used.
4. Easy to operate, opening and closing rapidly, from fully open to fully closed as long as the rotation 90 °, to facilitate remote control.
5. Easy maintenance, simple ball check valve, seals are generally activities, the removal replacement is more convenient.
6. In the fully open or fully closed, the sealing surface and the dielectric isolation ball and seat, through the media, will not cause erosion of the valve sealing surface.
7. Wide range of applications, from small to a few millimeters in diameter, large meters, from high vacuum to high pressure can be applied.
8. Because there are wiping ball in opening and closing process, it can be used with suspended solids medium particles.

Stainless steel ball valve principle

Stainless steel ball valves works by rotating the spool to the valve flow or occlusion. Valve switch light, small size, can be made into a large caliber, reliable sealing, simple structure, easy maintenance, with the spherical sealing surface often in the closed state, the media can not easily be eroded, in various sectors has been widely used.
high pressure ball valves and plug chart belong to the same type of valve, only its closure member is a sphere, the sphere rotating around the center line of the valve body to achieve open, and close a valve. Valve in the pipeline is mainly used for cutting, distribution and change the direction of media flow. Ball is a new valve is widely used. Stainless steel ball valve can be used to control the flow of air, water, steam, corrosive media, mud, oil, liquid metals and radioactive fluids and other types of media.

structures of the ball valve

Stainless steel ball valve are generally reduced diameter and channel diameter indented two structures. In either configuration, the ball valve flow resistance coefficient are relatively small. Especially the so-called full-flow type, ie - port ball valves, due to its passage diameter equal to the inner diameter of the pipeline, local resistance loss only if an equal length of the pipe friction, that all the valves, this valve flow resistance is minimized. In the rocket launch and test system requires pipeline resistance as small as possible.
There are two ways to reduce the resistance of the piping system: First, reduce the fluid flow rate, which requires increasing the diameter and the valve size, which often have a negative impact on the economy of the pipeline system, particularly for low-temperature delivery system ( liquid hydrogen) is extremely unfavorable.

State high pressure valve is widely used

State high pressure ball valve is widely used in petroleum refining, long-distance pipelines, chemical, paper, pharmaceuticals, water conservancy, power, municipal, steel and other industries, occupies a pivotal position in the national economy.
High-pressure ball check valve is mainly used for cut off or connected line of medium, it can also be used to adjust and control the fluid, which has a strong V-shaped seal between the hard ball with its V-ball core surfacing carbide metal seat shear force, especially for fiber-containing tiny solid granule and other media. The multi-way valve in the pipe can not only control the confluence flexible medium, diversion, and flow switch, but also to close any channel leaving the other two channels are connected. This type valve in the pipe should generally be installed horizontally.

stainless steel ball valve in the manufacturing process

stainless steel ball valve in the manufacturing process, very easy to contact with other metal iron products. To make stainless steel valves can have no rust, that the easiest way is to do the following process.
First: After rough finished, after pickling must be rinsed clean, if there is sand hole or perforation, should protect its gas TIG welding. Then polished, then solid melting process;
Second: finished processing after the completion of the pressure test. Antirust powder should be added to water to wash.
Third: to make use of wooden packaging during transport, do not touch the metal products.
Fourth: After installing the pipeline, perform periodic maintenance and repair, such as stem out often painted lubricants. Appropriate open and close the Ball valves several times. So that in the ball, the stem, the sealing surface is not easy to assimilate.