{"product_id":"clarke-psd1a-1-800w-91lpm-30m-submersible-water-pump-with-float-switch","title":"Clarke PSD1A 1¼\" 800W 91LPM 30M Submersible Water Pump With Float Switch","description":"\u003cp\u003eUse this pump if you know you need some serious pressure. Head height divided by 10 gives you roughly the pressure in bar, so 30m is about 3 bar, or 43 PSI. FloraFlex drippers want 25 to 35, so you would run this behind a \u003ca href=\"\/de\/products\/rain-bird-34-irrigation-pressure-regulator\"\u003epressure regulator\u003c\/a\u003e rather than straight into the ring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOne thing to know before you buy it for a dripper system.\u003c\/strong\u003e Clarke's own manual says this pump is for clean or slightly dirty water and not for corrosive liquids, and it is oil filled. Nutrient solution is mildly corrosive and it sits in your reservoir. Plenty of people run one anyway and get years out of it, but it is outside what the manufacturer signed up to, and if the seal ever goes you have oil in the tank. For a dedicated feed pump we would point you at the \u003ca href=\"\/de\/products\/aquaking-high-pressure-pumps\"\u003eAquaking Q800103\u003c\/a\u003e instead, which is the same 3 bar, built for the job and cheaper to replace. This one earns its place for reservoir transfers, emptying tanks, flood clean-ups and anywhere you want a lot of head from a proper induction motor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFloat switch.\u003c\/strong\u003e Tape it to the top of the pump if you don't want it cutting out as the tank drops. People do this to get closer to the bottom of the reservoir. You are then relying on yourself to not run it dry, so do that at your own risk.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFittings:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e25mm - nothing needed, the pipe goes straight over the included adaptor\u003c\/li\u003e\n\u003cli\u003e16mm - get this \u003ca href=\"https:\/\/www.thehydrobros.com\/products\/coupling-for-aquaking-submersible-pumps-16mm-12ins-od\"\u003eaqua king coupling\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eFloraFlex 16\/17mm pipework - you need this \u003ca href=\"https:\/\/www.thehydrobros.com\/products\/aquaking-pump-to-floraflex-coupling\"\u003efloraflex coupling\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the latter two you may need to chop the barbed nozzle off the adaptor that comes with the pump. That is normal, it is how they are designed.\u003c\/p\u003e\n\u003cp\u003eBe aware that tapering a pump down in size puts pressure on the impeller. Do it and don't expect the pump to last forever. Imagine restricting the opening of a leaf blower, the motor is not going to like it.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMax flow rate 91 l\/min\u003c\/li\u003e\n\u003cli\u003eMax head (lift height) 30m\u003c\/li\u003e\n\u003cli\u003e800W, 230V induction motor with overload protection\u003c\/li\u003e\n\u003cli\u003e1 ¼\" BSP threaded pump outlet\u003c\/li\u003e\n\u003cli\u003eIntegral carry handle for easy transport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSizing a pump for drippers?\u003c\/strong\u003e The number that catches people out is the DNL in most whip kits, which needs 0.8 bar to open. An 8m head pump makes 0.78, so it gives you no water at all rather than just less of it. We wrote the whole thing up in \u003ca href=\"\/de\/blogs\/grow-tips-indoor-hydroponics\/what-pump-for-floraflex-drippers\"\u003ewhat pump for FloraFlex drippers\u003c\/a\u003e, and the free \u003ca href=\"\/de\/pages\/floraflex-drip-system-calculator\"\u003eFloraFlex drip system builder\u003c\/a\u003e picks the pump, the right whip kit and the right flush arrangement from your room size and plant count.\u003c\/p\u003e","brand":"Clarke","offers":[{"title":"Default Title","offer_id":45245638410455,"sku":"10406","price":130.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/files\/clarke-water-pump-clarke-psd1a-1-800w-91lpm-30m-submersible-water-pump-with-float-1254950426.jpg?v=1787216953","url":"https:\/\/www.thehydrobros.com\/de\/products\/clarke-psd1a-1-800w-91lpm-30m-submersible-water-pump-with-float-switch","provider":"The Hydro Bros","version":"1.0","type":"link"}