Please help, is this the seal flushing oil at the outlet of the reciprocating machine shaft head pump?
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As shown in the picture, the small tube of the needle valve.
A gear pump driven by the crankshaft, which lubricates the gears inside.
The content of the image is incomplete. It is recommended to take more comprehensive pictures. In order to provide more accurate help.
This is connected with the oil pipe to the connection between the oil pump shaft head and the crankshaft (male-female matching type) to prevent dry wear. If there is a reciprocator overhaul on site, you can go and have a look, it's very intuitive.
Agree with the fifth floor! At first glance, he looks like an experienced driver.