Sorry, I should have posted this in the tank and pump section but dont see a way to move it.
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I did some searching/reading but haven’t been able to find a solution.
I've been using a submersible pump plumbed vertical in a 1700 gal poly tank for over a decade. The tank is above ground being feed by gravity spring water used for irrigation. The pump is suspended by 1 1/4" sch 80 PVC and 2 lines tied to a stainless eye-bolt. The 1 1/4" exits the tank through the tank sidewall near its top rim.
I have zero complaints about the water system except... A few years ago I replaced the old tired 3/4 HP pump with a new 1 HP pump. I'm happy with the increased uphill water pressure but now there is a chronic problem with the motor torque deforming/cracking the PVC pipe/fittings near the pump. This will be my 3rd repair in the past 3 years!
I currently have about 4 feet of submerged PVC pipe above the pump with a check valve and a union, then the PVC elbow that exits the tank. The torque caused damage has always occurred between the pump and the union. The first failure was a section of the PVC pipe deformed and split. Last time a male fitting split at the treads. This time it looks like the damage is to where the pipe enters the union. I wouldn't mind having to do the repairs if they weren't so frequent.
I could use some ideas here.
Maybe black poly pipe could handle the torque better than the more rigid schedule 80?
I'm not sure about the slip fitting.
I am aware of torque arrestors but don’t see the application with this setup.
I've consider using steel pipe near the pump but fear the torque will simply cause problems further up the line.
_______________________________________________________________
I did some searching/reading but haven’t been able to find a solution.
I've been using a submersible pump plumbed vertical in a 1700 gal poly tank for over a decade. The tank is above ground being feed by gravity spring water used for irrigation. The pump is suspended by 1 1/4" sch 80 PVC and 2 lines tied to a stainless eye-bolt. The 1 1/4" exits the tank through the tank sidewall near its top rim.
I have zero complaints about the water system except... A few years ago I replaced the old tired 3/4 HP pump with a new 1 HP pump. I'm happy with the increased uphill water pressure but now there is a chronic problem with the motor torque deforming/cracking the PVC pipe/fittings near the pump. This will be my 3rd repair in the past 3 years!
I currently have about 4 feet of submerged PVC pipe above the pump with a check valve and a union, then the PVC elbow that exits the tank. The torque caused damage has always occurred between the pump and the union. The first failure was a section of the PVC pipe deformed and split. Last time a male fitting split at the treads. This time it looks like the damage is to where the pipe enters the union. I wouldn't mind having to do the repairs if they weren't so frequent.
I could use some ideas here.
Maybe black poly pipe could handle the torque better than the more rigid schedule 80?
I'm not sure about the slip fitting.
I am aware of torque arrestors but don’t see the application with this setup.
I've consider using steel pipe near the pump but fear the torque will simply cause problems further up the line.
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