How Hubbell Pressure switches works? – Emergency Sales & Service

The pressure switch is an important component in most of our electric models. It is the electric counterpart to the assigned unloader valve. In this blog, we will look at how it works, what it is, and how to adjust?

Hubbell pressure switches


Hubbell pressure switches are used in a number of applications, assembly, and operation of an electric air compressor.

Knob/Off level

Auto-off/lever which is also known as the knob is used to manually separate the contacts. It is important to turn it to the off position before pluggin in or unplugging the air compressor

Terminals

The terminals are the points where the incoming and outgoing energy and power leads are connected to the pressure switch.

Contacts

The contacts are made from a conductive material that consists of 90% silver and 10% nickel; it is used to complete the electrical circuit and allow power to the motor. If it gets separates, the circuit is broken and it will turn off.

Diaphragm

This is made of a flexible material that pushes against the block as air pressure increases. If the specified cut-out pressure is reached, then it forces the contacts apart and shuts down the motor.

Pressure switch relief valve

Hubbell pressure switches
Hubbell pressure switches
The Hubbell pressure switch relief valve is located on the base of the switch and is plumbed into the top of the check valve with a copper or nylon tube. Once the pressure switch separates, the lever actuates this valve to relieve the pressure that was trapped between the pump and the check valve.

Adjustment Springs

In Hubbell pressure switches, it is used to increase and decrease the cut-in and cut-out pressure settings. Some pressure switches have a secondary spring that will adjust the cut-out pressure without affecting the cut-in setting.



If you want to know more about Hubbell pressure switches, then visit Emergency Sales & Services’ official website now!
Location: Fenton, MO, USA

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