Q:O ball as general regulation of opening extent

According to the actual demand, turn 90 degrees from the closed state to the maximum opening.

Q:Electric ball valve installation need to pay attention to what?

8, electric and pneumatic valve in order that no special contract allows only vertically installed in the indoor use. 9, after the completion of the pipeline construction, all the valves on the pipeline line shall be opened and the residual dirt shall be removed.

Q:What does the sealing surface of the ball valve stand for HF?

HF is the abbreviation of two English words: "Hard Face", which means surface hardening. Usually surfacing is made of Tailai alloy (Alloy 6). Other surface hardening methods include hard chromium plating. This method is used more in the ball valve. But hard chromium plating is prone to small cracks, which reduces its corrosion resistance.

Q:PPR ball valve which face is open, which face is closed, there is a o, there is a s, which is off, ah, which is open, well intentioned people told me that the original finished by forget

Hello, I am glad to answer for you. O is on, s is off. I hope I can help you.

Q:Stainless steel ball valve Q11F-10P 16P each letter meaning?

Q ball valve, the first 1 representatives of second representatives of 1 screw connection, ball valve floating ball (ball valve floating ball and fixed ball, 7 ball, F fixed on behalf of) on behalf of PTFE- PTFE seal (PTFE PTFE), representing 10 of the nominal pressure valve is 10 kg (1Mpa), P represents the ball body material is 304 stainless steel.Shanghai blue forest control valve Co., Ltd.

Q:How can a steel ball in a steel ball valve be put in?

This kind of ball valve usually has an external direction of compression, an arrow. Usually, the ball is filled from the direction of the arrow tail and inserted or tightened into the circlip.

Q:A connection wire for 21mm the other end is connected to 4 points inside the pipe joint ball valve

Four is 1/2=DN15, 21mm data is not accurate, if it is metric thread, provide tooth pitch and thread diameter.

Q:Why is there a water or oil in the new ball valve?

When the product goes out of the factory, we should do the closed water pressure test. There are two ways to check the spot and follow the pieces.

Q:Structure design principle of fire ball valve

5 ball valve seat structure typical fire abroad professional production company common pipeline ball valve seat structure design of typical figure 9 - 12 shows, each seat structure fireproof structure design is reasonable, to ensure the seat piston effect of the sealing ring and the valve seat seal failure, valve seat leakage way at least. Figure 9 rubber sealing seat 1 to the left to the right in Figure 10 | rubber sealing seat 2 to the left to the right | Figure 11 rubber and plastic combined sealing seat to the left to the right in Figure 12 | plastic seat to the left to the right seat | fireproof structure design reasonable, can guarantee the way upstream pressure medium through the valve seat leakage at least fire, the best performance. In the design of fireproof structure of pipeline ball valve, the fire protection structure design of valve seat should be paid more attention to. The seat of fire with reasonable structure is the fundamental guarantee of fire safety in the pipeline valve in practical engineering, reasonable assessment of structural fire protection should be strictly in accordance with the API6FA/API607 standard fire test, test samples should not be sample makers, should be the verification institution with sampling, so as to ensure the rationality of the third party authentication and notarization of.

Q:What is retractable hemispherical valve? What's the area with the manual hemisphere valve?

It has the telescopic deformation caused by heating and absorbing the axial, transverse and angle of the absorption pipeline. Absorb the vibration of equipment and reduce the influence of equipment vibration on pipeline.