Constant-Pressure Tests

Constant-pressure controller for artesian wells

The solution for a comfortable shower and a steady water flow in your home in the Laurentians and Lanaudière regions.

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Is your water pressure fluctuating? There’s a solution.

A constant-pressure system automatically adjusts the speed of your well pump based on water demand to maintain a more stable pressure throughout your home. Have a constant-pressure controller installed.
(450) 275-1304

Local expertise in pumping systems

As RBQ-certified pumping system specialists in the Laurentians and Lanaudière regions, we at Pompe M.D.G. Inc. understand the geology and specific characteristics of your artesian wells. Installing a constant-pressure controller is a smart upgrade to protect your pump and maximize your comfort.

We provide installation, troubleshooting, and repair services for high-performance Pentair Pentek Intellidrive and Franklin Electric SubDrive Connect systems.

Characteristic Conventional System Constant-Pressure System
Pressure Variable (On/Off) Stable and constant
Technology Mechanical pressure switch Electronic controller (VFD)
Comfort Noticeable fluctuations Steady pressure
Service Life Increased mechanical wear Protected soft start

Frequently asked questions about constant pressure controllers

A constant-pressure controller automatically adjusts the speed of the well pump based on water demand to maintain a more stable water pressure in the home. Unlike a conventional system that starts and stops the pump between two pressure thresholds, a variable-speed controller adapts the pump’s operation to the system’s needs.

A conventional system typically uses a pressure switch to start and stop the pump between two pressure levels, such as 40 and 60 psi. A constant-pressure system, on the other hand, uses a pressure sensor and a variable-speed controller to automatically adjust the pump speed. This keeps the water pressure much more stable as demand fluctuates.

In some cases, it is possible to add a constant-pressure controller to an existing system without replacing the pump. However, compatibility depends on the type of pump, the motor, its power rating, the electrical voltage, and the system’s specifications. We recommend that our experts perform a technical evaluation.

A constant-pressure system provides a more stable water pressure, especially when multiple faucets or appliances are using water at the same time. The controller automatically adjusts the pump speed based on demand, which improves comfort and allows the system to operate according to actual water needs.

A VFD, or variable frequency drive, is an electronic device that allows you to adjust the speed of the pump motor. In a constant-pressure system, the VFD adjusts the pump speed based on water demand to maintain a more stable pressure.

A variable-speed drive can reduce the power consumed by the pump when water demand is low. However, actual electricity consumption depends on the pump, the system, the depth of the well, and usage patterns. Therefore, energy savings should not be considered guaranteed in all installations.

Maintenance depends on the controller model and the entire pumping system. It may include, among other things, checking the controller’s operation, electrical connections, tank pressure, and system settings. Any electrical work must be performed safely and in accordance with the manufacturer’s recommendations.

In some cases, a controller can be diagnosed and repaired, while certain malfunctions may require replacement of the unit. The diagnosis depends on the model, the error code, the condition of the motor, and other components of the pumping system.

The operating pressure depends on the controller model, the pump, the available flow rate, and the system specifications. The target pressure must be determined based on the home’s needs and the equipment’s limitations.

A constant-pressure system may be beneficial when water pressure fluctuates significantly, when multiple people are using water at the same time, or when you want to improve the comfort of a home supplied by a well. An assessment of your system will help determine whether this technology is suitable for your setup.

Professional installation by our qualified technicians includes our labor warranty. For products purchased over the counter from our online store without installation, a limited manufacturer’s warranty applies.

Ready to stabilize your water pressure?

Call on the RBQ-certified team at Pompe M.D.G. Inc. for a long-lasting installation in the Laurentians and Lanaudière regions.

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