HDPE,PP hot water ball valve DN20 China manufacture

HDPE,PP hot water ball valve DN20 China manufacture
HDPE,PP hot water ball valve DN20 China manufacture
HDPE,PP hot water ball valve DN20 China manufacture
HDPE,PP hot water ball valve DN20 China manufacture
HDPE,PP hot water ball valve DN20 China manufacture
Name
Ball Valve
Material
HDPE, Copper
Pressure Rating
PN20
Place of Origin
China
Size
DN90
Colors
Black with Yellow
Temperature
under 95 ℃
Payment items
T/T L/C
Port
Qingdao
Payment
30% ADVANCE PAYMENT AND THE 70% BALANCE PAYMENT BEFORE THE SHIPEMNT
The core of the ball valve is a round ball which has a hole in it. When the valve stem is moved by the plate, it is fully open when facing the axis of the pipeline, and fully closed when rotated 90°. The ball valve has a certain adjustment performance and can be closed more tightly.

ball-valve-pn20.png

Introduction of ball valve products and working principle

It evolved from a plug valve. Its opening and closing part is a sphere, and the sphere is rotated 90° around the axis of the valve stem to achieve the purpose of opening and closing. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium on the pipeline. The ball valve designed with a V-shaped opening also has a good flow adjustment function.

Advantages of HAILI ball valve:

① Has flow resistance (actually 0);

②Because it will not get stuck during work (when there is no lubricant), it can be reliably used in corrosive media and low boiling point liquids;

③ In an enormous pressure and temperature range, it can achieve complete sealing;

④ It can realize rapid opening and closing, and the opening and closing time of some structures is only 0.05~0.1s, to ensure that it can be used in the automation system of the test bench. When the valve is opened and closed quickly, the operation has no impact;

⑤The spherical closure can be automatically positioned at the boundary position;

⑥ The working medium is reliably sealed on both sides;

⑦When fully open and fully closed, the sealing surface of the ball and valve seat is isolated from the medium, so the medium passing through the valve at high speed will not cause erosion of the sealing surface;

⑧Compact structure and lightweight, it can be considered the most reasonable valve structure for the low-temperature medium system;

⑨ The valve body is symmetrical, especially the welded valve body structure, which can well withstand the stress from the pipeline;

⑩The closing part can withstfightigh the pressure difference when closing. ⑾ The ball valve with a fully welded valve body can be directly buried in the ground so that the valve internals are not corroded, and the service life can reach 30 years. It is a valve for oil and natural gas pipelines.

ball-valves-hdpe.png

Disadvantages of ball valve products:

①Because the most important valve seat sealing ring material of the ball valve is PTFE, it is inert to almost all chemical substances and has a small friction coefficient, stable performance, is not easy to age, wide temperature range, and excellent sealing performance comprehensive characteristics. But the physical properties of PTFE, including high coefficient of expansion, susceptibility to cold flow, and poor thermal conductivity, require that seat seal designs must blt around these properties. Therefore, when the sealing material becomes hard, the reliability of the sealing is damaged. Moreover, PTFE has a low-temperature resistance grade and can only be used below 180°C. Above this temperature, the sealing material will degrade. In the case of long-term use, it is generally not used at 120 °C.

② Its adjustment performance is worse than that of a globe valve, especially a pneumatic valve (or electric valve).

How to distinguish between a cold water valve and a hot water ball valve?

For household valves, such as globe valves, the valve core sealing material for cold water has rubber, which is used for cold water.

The sealing surface of the ball valve is generally PTFE, which can be used for hot water. A general female thread ball valve can be used for hot water.

ball.png

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