If the rate exceeds or drops below what’s required, it can instantly trigger a series of actions such as activating an alarm, powering on a pump, diverting flow, shutting off parts of the system. This can be contrasted with an ‘insertion’ flow switch, which uses a probe or paddle introduced into the process pipe from externally. There are various leading brands and flow switch manufacturers supplying the many different types of switches, accessories and systems they’re widely used in. 1-inch flow switches of all kinds are intended for use in pipes or ducting of 1-inch diameter. An inline water flow switch is one that’s installed more permanently as an integral part of the overall system. By providing a direct conduit ... Switches shall be mounted so as not to interfere with the normal operation of the valve and shall ... With its NEMA 3 rated housing and water-resistant cord, the … Before ordering or installing a flow switch, it’s extremely important to have a clear understanding of which specific type you need for the exact application you have in mind. In the following sections we’ll cover various examples of common air and gas flow switch uses. Figure 4: Trimming Diag ram for the Large Flow Paddle Which actions a switch performs will depend entirely on the type of switch and what it’s been designed for. This will then send a signal back to the fire department that they need to come out and investigate. Install flow sensing device. It is the sensing of this gravity flow that is used to automatically switch on the shower pump. endstream endobj 559 0 obj <> endobj 560 0 obj <> endobj 561 0 obj <>stream The wire is 2m long and needs to connect into the wiring station. This information is read by an electrical sensor, which in turn triggers an action based on the reading. High temperature flow switches are commonly used in industrial or manufacturing systems, where a continuous flow of liquids or gases sometimes needs to be maintained at temperatures up to 350 Celsius and above. Air flow switches can be used for air filtration and supply systems, duct heating, exhaust venting and much more. The Potter VSR is a vane type waterflow switch with non-corrosive insert for use on wet sprinkler systems. Paddle flow switches are a type of mechanical switch that’s activated directly by pressure from the medium - usually liquid - passing through the duct or channel into which the switch is inserted. They’re ideal for automatically protecting equipment and pipeline systems against damage from reduction or loss of flow, and Dwyer flow switches also have a leading reputation for long-term reliability and high life expectancy before requiring maintenance or replacement. There are numerous different types of water flow switches available. They’re usually designed for easy cleaning and maintenance as well as offering good chemical compatibility and anti-corrosive properties. Mechanical flow switches are any type of switch that has one or more moving parts triggered by direct physical contact with the medium being monitored. An air valve will often be set up to bleed pressure from a system if the flow rate falls to too low a level. Over time, shower pump flow switches can degrade due to limescale, heat and other issues, and may eventually need replacing. When the pump is not running, the water comes out of the tank into the household plumbing. z���[��Ղ�&�q�dkȔ�b��|M�&�� �4ubrCؐ��`�Di�o�ۺҬ�ґ�i:I��e�f��TCN�����N�t�)�����q10F����.�!�-������~1�����tG�f���3���۪ޥ�W}j#+. In the sections below, we’ll explore some of the more common ones. Pool pump flow switches perform very similarly to the function outlined above for heat pumps - the switch prevents the pool pump from continuing to run in low/no flow situations, which can cause serious damage to the component, and when the pool isn’t being used. "� �c"b�#F���s�BYeQ�&�WD��kb��!�co��v��]L"�3ks�Y�A8��{���@.1�X��cC��,0eF�o�Щ�:i��"���_F�W���Y�选W��%������s�_)]m�u�~X�f��ږMU����U�WՎ����C�i��t\��^0pʖ�>[��vcd4����JE���,Z������������q4*���|��0݋k΄B_v��D�*�Ci����X���[l�5wD�vt�0�lJ�K:'�fҏ�t�6���j��� Not all flow switches will have a physical paddle as such. endstream endobj startxref The paddle is often a small strip of metal or plastic that hangs inside the pipe and is attached to either a tensioned spring or a series of magnets.