What does a submersible pump torque arrestor do?

The main function of a torque arrestor is to prevent the motor start-up torque from banging the pump against the side of the well casing. Sometimes submersible pumps rotate in a direction that could cause the drop pipe to unscrew.

Where do you put a check valve on a submersible pump?

In submersible pump applications, the first check valve should be installed directly on the discharge head of the pump or maximum one pipe length (20 feet) above pump. Water pumped and flowing through a piping system has a certain amount of energy (weight x velocity).

How far from the bottom of the well should a submersible pump be?

10 to 20 feet
Pumps should never be set directly at the bottom of a well. It is usually best to place the pump 10 to 20 feet up from the bottom of the well.

Where do you put torque arrestors?

The torque arrestor is used to prevent motor start up torque from thrusting the pump against the side of the well casing. Think of it as a shock absorber for your well system. Placement: The torque arrestor should be placed 1′ or 2′ above the pump. .

Do I need a check valve on my submersible pump?

The check valve will help your water system maintain pressure when the pump shuts off and also prevent backspin, upthrust, and water hammer. It is recommended that at least one check be installed in all submersible well pump installations. Many well pumps have built-in check valves.

Does a submersible well pump need a foot valve?

Nearly all well pumping systems, one line jet pump, two line jet pump, or submersible well pump, require a foot valve installed at the bottom of the well piping. The foot valve prevents water from flowing backwards out of the jet pump and well piping back into the well when the jet pump stops operating.

How deep do you put a submersible pump?

Submersible pumps are long, thin, cylindrical in shape and sit as deep as four or five feet above the bottom of a water well.

How do you use expandable torque arrestors?

Installation: Place the torque arrestor around the drop pipe so that each half is spaced evenly.

Install the lower pipe clamp and tighten.
Install the upper pipe clamp (leave loose) and then push down on the torque arrestor to spread the center portion so it fits the inside of the casing.

Where to install a torque arrestor in a submersible pump?

Torque arrestors are a water-well component that prevents wear and tear that start up torque can cause in a submersible pump application. The first torque arrestor is typically installed 18″-24″ above the submersible pump. Installation practices can vary depending on the depth, type of pipe and the pump horsepower.

How often do you need to install a torque arrestor?

Some installers will install one at the pump while other installers may prefer to use three or four spaced at 75-100 ft intervals. For more information about submersible pumps and the parts required in a submersible pump application, check out our blog, Components of a Typical Submersible Pump Application.

Why do you need a torque arrestor for PVC drop pipe?

“Torque arrestors are recommended for installations that use PVC drop pipe for three reasons. The first is that most pumps rotate in a direction that will cause the drop pipe to unscrew. A torque arrestor keeps the pump snug in the well casing reducing the possibility that the pump starting torque will result in any right hand thread loosening.

Where is the safety rope on a submersible pump?

Safety rope can be found connected directly to the submersible pump and secured at the well head. The main function is to prevent the pipes from separating which could result in the pump being lost at the bottom of the well. Safety rope can also provide a backup to enable the installer to pull the pump from the well if the riser pipe fails.