Is it necessary to add a drain line between the tubing strainer and the front and rear shut-off valves?
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Experts: Is it necessary to install a drain line between the oil pipe filter and the upstream and downstream shut-off valves?
The filter itself is sufficient, at the lowest point.
On oil pipelines, when is it necessary to install drain lines?
Is it necessary to install a drain line between the oil pipe filter and the upstream and downstream shut-off valves? The main consideration is whether the cleaning of the oil pipe filter can be carried out safely; if not, appropriate safety drain measures must be in place.