Check valve
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The check valve that can be placed on both flat pipes and risers is H41 or H44. The significance of the reducing check valve model.
I'm also a newbie and just getting into these things. I was just working on a valve specification sheet, so I had some ideas. I suggest you search for information about valve selection. I have seen one, but it is still not clear. There are also some compounds that require valve codes, which is quite complicated. We can learn together * one time! Leave your email and make friends: cheng10mx@sohu.com
Check valves are divided according to structure and can be divided into three types: lift check valve, swing check valve and butterfly check valve. Lift check valves can be divided into two types: vertical and horizontal. Swing check valves are divided into three types: single-disc type, double-disc type and multi-disc type. The butterfly check valve is a straight-through type. The connection forms of the above check valves can be divided into three types: threaded connection, flange connection and welding. The two models of the poster, H41 and H44, are too broad. I checked and found that basically the valves of these two models are both vertical and horizontal.
Swing check valves are recommended for use on horizontal pipelines and can also be used on pipelines where fluid flows from bottom to top.
Because of the city:lol H44
About the code number of check valve: The first number of the type code of the H check valve is the connection form code, and the second number of the 4-finger flange connection is the structural form code. The structural form codes of the check valve are 1 Lift straight type 2 Lift vertical type 3 Lift angle type 4 Swing single-disc type 5 Swing multi-disc type 6 Swing double-disc type 7 Rotary butterfly check type 8 Cut-off check type lift check valve is installed horizontally on the horizontal pipeline, and vertical type is installed on the vertical pipeline. The swing check valve is not suitable for small-diameter valves. It can be installed on horizontal, vertical or inclined pipelines, but when installed on vertical pipelines, the medium should be from bottom to top.