Q:I heard that there is a special production valve stem equipment, automation, production accuracy and production efficiency are high equipment

Horizontal lathe, stem processing accuracy is not high, the general machine tool on the line

Q:Natural gas, oil or steam suitable for valves, valve stem, respectively, what is the material?

See medium type, acid or alkaline, corrosion resistance, suitable for natural gas, oil or steam applicable valves, many kinds of ah, 2Cr13 304, 316, and so on,

Q:Hello, the valve material is 3Gr13, stem 3Gr12, I would like to ask, this valve against sulfur?

3Cr13 martensitic stainless steel, C content is relatively high, if the S is dry, corrosion resistance is relatively small, with 3Cr13 not what big problem, if the water is single, cannot use 3Cr13,

Q:Sea poles, stem what is the difference between the general water reservoir play, 3 meters or so, what pole is better, please advise

The sea rod called cast rod or pole. It has a winding wheel at the handle of the fishing rod. It is covered with fishing lines, so that when it is thrown, it can throw the bait hook into the far water and throw it very far away.

Q:What exactly is the stem nut, please

Sometimes it is not possible to use copper alloy stem nuts for production and operation. Because some products or environment will corrode copper medium, the material of the stem nut can not be made of copper. On the basis of the electric valve, the stem nut has a melon clutch, which requires a certain amount of heat treatment to achieve more surface hardness and maximum hardness. When using the steel stem nut, we should pay attention to the thread, and the steel stem nut is easy to bite. But the stem nut is only suitable for low pressure and small bore valves. The strength of the stem nut of this material is less than that of the metal stem nut

Q:When the butterfly valve is installed, can the stem be downward? What are the criteria?

Not only can the transmission device at or above the level of 90 degrees, the transmission device is not allowed to download is in the valve below, it's too dangerous. This does not require any standard.

Q:What's the difference between the stem and the pole?

The biggest difference is throwing, the same hardness, road can play farther. And the road and pole waist and sensitivity is better, and the great advantage in stickleback fish pump. Sensitivity: a good pole, even if the bait touches a branch or a trunk, can feel it. The stem was originally a fishing boat, not thrown.

Q:The ball valve in the valve is in what state is open

Therefore, the location of the stem can not directly determine the switch status of the ball valve, such as the handle has a switch sign, you can observe the mark near the slot, at this time the valve switch with the mark.

Q:Valve stem at the water seepage, how to repair?

4, take protective measures to prevent rust, corrosion has to be replaced;5, stem bending should be straightened or updated;6, the use of filler after a certain period of time to be replaced;

Q:River fishing rod or sea pole?

I think night fishing, I personally prefer raft, multi-point, easy to operate, but the tonality is slightly hard