Is there a standard for the distance between the backflow valve and the main pipeline?
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In the device, some drain valves are too close to the main pipe; as a result, they cannot be operated after insulation is applied. Is there any clear standard specifying the distance between the drain valves and the main pipe?
I don’t see any such rule. But the valve should be exposed outside the insulation layer.
I searched for many standards but couldn’t find any specific requirements; it seems I’ll have to check things myself
For this type of backflow system, it’s sufficient to use axonometric drawings during construction; the design agency will provide you with the necessary dimensions, so there are usually no problems
I asked the designers, and they said there’s no standard; generally, it’s required to be less than 15 cm
There aren’t any major problems; it’s just that the thickness of the insulation wasn’t taken into account during design, which causes inconvenience when operating the valve. The operators curse constantly while working: shutup:
It would be best to have insulation; additionally, specifying a minimum length would make it more convenient to use
I haven’t seen specific standards; when installing, the supervisor needs to take into account the thickness of the insulation layer, as well as the distance from the ground. In short, the installation needs to be planned based on the actual operating conditions; otherwise the employees will get angry, haha;P
An experienced colleague once said that the older a design is, the more valuable it becomes. As for today’s designs, well, people start working on them without even finishing reading the manuals. Most of the time, one just carries out tasks as instructed, doing whatever the supervisor says. The disconnect between design and reality is also a serious drawback. P.S. I tried design work on a part-time basis for a couple of days