TFP,
I would like to know what part this is (highlighted in orange but not the valve) on my pool and what it does. It appears to be on the suction side of the piping before it gets to the pumps. I am wondering about it because I am tracking down the air getting into the my main pump. I do have a suction powered vacuum with the pool and I feel like it MAY be associated to that. The lid on it is pretty rough and I would like to look at replacing it. The majority of the equipment is Jandy and I have tried to look through their product line however I haven't had much success.

The reason I'm looking into this is because I just replaced the two lids on the pumps after trying to work with new seals and gobs of lube. The new lids work much better without any lube needed however there is still some air bubbles getting into the main pump basket. I have a feeling this may be another cause of the air and want to keep working backwards in the system.
Thank You
I would like to know what part this is (highlighted in orange but not the valve) on my pool and what it does. It appears to be on the suction side of the piping before it gets to the pumps. I am wondering about it because I am tracking down the air getting into the my main pump. I do have a suction powered vacuum with the pool and I feel like it MAY be associated to that. The lid on it is pretty rough and I would like to look at replacing it. The majority of the equipment is Jandy and I have tried to look through their product line however I haven't had much success.

The reason I'm looking into this is because I just replaced the two lids on the pumps after trying to work with new seals and gobs of lube. The new lids work much better without any lube needed however there is still some air bubbles getting into the main pump basket. I have a feeling this may be another cause of the air and want to keep working backwards in the system.
Thank You