7 Explanation of terms Bar Bar is a common unit for water pressure. The pressure in a water pipe is usually expressed in bar and indicates the force with which the water is pressed against a surface (e.g. valve surface). The water pressure can be measured using a pressure gauge. High pressure Various valves designed for high pressure or low pressure in the water line can be installed in water bowls. If the water is coming from a domestic connection or a pump system, you need a water bowl or valve designed for high pressure. KERBL water bowls have a high pressure range of between 1– 5 bar. For pressures over 5 bar we recommend installing a pressure reducer ahead of the water bowl. Low pressure If water is drawn from a pasture barrel or other raised container without a pump or additional pressure booster, a low pressure water bowl or a low pressure valve is required. KERBL water bowls have a low pressure range of between 0.3 - 1 bar. Water flow rate The water flow rate, the volume flow or flow rate is the amount of water that flows through the cross-section of the water pipe or water bowl valve per minute and is expressed in litres per minute (e.g. 8 L/min). Volt Volts are the measurement of electric voltage, expressed in V (Volts). A normal domestic installation socket has a voltage of 230 V. The voltage can be reduced to e.g. 24 V by means of a protective isolating transformers for use with water bowls. Voltages up to 48 V are not dangerous for the human body and animals. Watts Watts are the unit for electric power, expressed in W (watts). A water bowl can be operated at 230 V or 24 V. As the same heating temperature is required to keep both drinking bowls frost-free, the same electric power is required despite the different voltages (24 V = 30 watts; 230 V = 30 watts). Partition systems according to EN 1717 It should be noted that water contaminated by animals falls under category 5 according to EN 1717. If a water bowl is connected to a water line that is connected to the public water supply system and does not itself separate the water surface from the supply system via a free outflow as per EN 1717, then the water bowl installation must be separated from the public and domestic water supply using a system separator with a free outflow as per EN 1717-type AA. The right water bowl type What you should consider when selecting the right water bowl: 1. High pressure or low pressure? • High pressure – is the water bowl going to be connected to the domestic supply? • Low pressure – is the water bowl going to be supplied using a water container without a pressure booster? 2. Species and group or individual housing? • Which animals are you providing water to and how old are they? (see next water bowl valve type evaluation below) • How large is the group? • What are the water needs of each animal? • Min. water flow of the valve? • Size of the tank volume? 3. Does the water bowl have to be frost-proof, i.e. heatable? • Will the heating system for the lines be laid in the browsing area? - 24 V • Is the lines’ heating system going to be laid outside the browsing area or can it be protected from browsing? - 230 V Good to know about drinkers IBC containers – the practical alternative to pasture barrels Another option for ensuring water supply without a water connection is to use an IBC container. We offer yet another fast and easy solution for mounting a feeding bucket using our mounting plate and connector set for IBC containers.
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