Product Description Powerful and durable water supply for home and garden The GARDENA pressure tank unit 3700/4 is a durable and powerful solution for automated water supply in the home and garden. After a simple installation, the domestic pressure tank unit becomes an integral part of the piping system and allows you to use rainwater or well water for watering the garden or as service water in your household, for example, for toilets. The water collected in wells, cisterns or rain barrels is transported by the powerful electric pump to where it is needed in the house and garden. The pressure tank unit 3700/4 delivers an impressive output of 4.1 bar at 800 W and can pump up to 3700 litres of water per hour from a depth of 7 metres. It has a 19-litre water tank with a low-maintenance EPDM membrane and can be easily filled or emptied manually. A drain plug ensures that the water can be quickly drained from the tank, for example, when frost is predicted.