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Water Pressure Switch

A reliable source for Water Pressure Switch information and leading Water Pressure Switch Companies & Manufacturers.

Electronic water pressure switches are used to start and stop the electric water pump automatically based on preset pressures. The water pressure switches not only automate the pumps but also prevent dry running. Most often used in connection with pumps, water pressure switches are capable of monitoring and regulating water pressure systems by engaging the pump unit when the pressure is too low and stopping the pump when the pressure is optimal. Read More…

Water Pressure Switch A water pressure switch is a type of hydraulic pressure switch that measures and helps regulate changes in water pressure.
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Leading Manufacturers

Mentor, OH  |  440-205-7600

Tecmark is a designer and manufacturer of remotely actuated controls used by OEMs worldwide. We offer an extensive line of high pressure switches, and our customer service representatives will help you find the perfect model for your application. Whether you are looking for an in-house solution, or an industry need, we continue to develop technological advancements.

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Tecmark Corporation $$$

Lenexa, KS  |  800-676-6794

SOR pressure switches have earned a long-time reputation for their high quality, rugged construction and reliable performance under the most demanding applications. We offer explosion proof, hermetically sealed, and weatherproof switches. We design our pressure switches with high performance in mind, crafting custom, durable pressure switches with the approval of multiple agencies. Our products are designed to be long-lasting, cost effective, and easy to use.

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SOR Inc. $$$

Pompano Beach, FL  |  888-386-4270

For over 35 years, MPL has specialized in unique miniature pressure switch solutions to the world’s leading manufacturers. MPL pressure sensors and switches can be found in the most demanding environments from automotive to health care where long-life, reliable solutions are required. Visit our website for details.

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MPL (Micro Pneumatic Logic, Inc) $$$

Racine, WI  |  262-639-9035

Our incredible pressure switches are capable of monitoring the most hazardous of materials. These affordable products require low maintenance. We have a whole assortment of special switches. If your application demands extra attention then just let us know and we can work with you to determine the best possible solutions for your situation. Give us a call today and our reliable staff will assist you

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Air Logic $$$
placeholder image Tecmark Corporation SOR Inc. MPL (Micro Pneumatic Logic, Inc) Air Logic

How Water Pressure Switches Operate

Water pressure switches work similarly to most other pressure switches: a small pressure-sensitive force collector, such as a piston, diaphragm, Bourdon tube, or bellows, receives strain from the pressurized water and serves as a transducer, producing a signal as a function of the applied pressure.

pressure switches

To control the pressure system as described, the switch is programmed to react at specific actuation locations along the pressure spectrum. Depending on the exact type and use, pressure switches can be produced from a variety of materials, such as acetal, brass, silicon, bonded metal foil, ceramic, polycarbonate, plated steel, glass-reinforced polyester, polyvinyl chloride, or cast aluminum. They are excellent for filters, wastewater applications, water treatment, hydraulics, pipelines, sumps, pumps, swimming pools, and other water-based applications since they are made to handle a variety of water-based circumstances.

Water pressure switches work well in any situation where measuring and controlling water flow is necessary since they are specifically made for alert, shutdown, and control of numerous different processes and types of equipment. Water pressure switches are now a crucial component in ensuring the safety and dependability of processes involving pressurized water thanks to advancements in pressure switch technology. Accuracy, pressure range, electrical output, gauge type, temperature adjustment, temperature output, and field adjustability are a few factors to think about when shopping for a water pressure switch.

Parts of a Pressure Switch

Inlet Port: The component that joins the pressure switch assembly to the process unit is the inlet port. Pressure switches are fitted on the nozzles that are attached to a tank or pipe. Threaded fittings are the standard for connections. Bolted or welded connectors are only occasionally employed. It is critical that the type of fitting and its pressure rating match the fluid pressure.

threaded inlet port

Pressure-Sensing Element: The type of pressure sensor component used in mechanical pressure switches determines its classification. This is the major component of the switch that is mechanically activated by the fluid pressure. The piston or diaphragm's area on the fluid side is made to transfer enough force from the anticipated fluid pressure. The actuating force and spring force need to increase with an increased area.

Spring: The spring balances the fluid's force. It is preloaded to correspond to the fluid's operational pressure. Only when the spring-applied force is greater than the force generated by the fluid pressure does the switch turn on.

pressure switch spring

Differential: This is used to expand or contract the switch's operating pressure range. A set of springs and adjustment screws that are obviously smaller than the setpoint adjustment is a typical design used in pumping systems. Only one end (higher or lower end) of the pressure range is changed by tightening or loosening this screw; the other end stays unchanged.

Setpoint Screw: The setpoint adjustment screw is built inside the spring. The activation pressure can be changed by turning the setpoint adjustment screw.

Switch Housing: The switch and other internal components are shielded from the environment by the switch housing. The protection rating of the switch casing is a crucial characteristic. IP, NEMA, and ATEX ratings are common enclosure criteria. The amount of protection against the intrusion of solid and liquid foreign objects is described by IP and NEMA ratings. Environments having a danger of fire and explosion are those with an ATEX classification.

Diaphragm: The switch's internals are shielded from the process fluid by the diaphragm and other sealing components. It is a flexible substance typically consisting of metal alloys, polymers, or elastomers. The kind of fluid and its temperature must be taken into consideration when choosing the diaphragm material.

Contacts: One of the switch's conducting components are the contacts. The electrical circuit can be energized or de-energized by separating or connecting the contacts. Materials having excellent electrical conductivity and corrosion resistance, such as copper, silver, gold, or brass, are used to make switch contacts. Contacts might be NO, NC, or CO in terms of its connections. NO is for circuits that are initially de-energized and cut in at the setpoint. Because it is originally electrified, NC behaves in the opposite way. One open and one closed connections or circuits are served by CO switches, which are frequently utilized for control interlocking or more complex circuits. NO or NC will do for basic control activation.

Water Pressure Switches Informational Video


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