Hi guys,
I am looking at getting a Grundfos Scala 2 for my 4 bedroom home running off tank water.
It has 2 bathrooms and garden will be running off a separate pump.
Will the Scala 2 give me enough pressure for my home?
Browse Forums General Discussion Re: Water pump size for no town water? 2Jan 18, 2017 8:27 pm The Harder You Try - the Luckier You Get ! Web site http://www.anewhouse.com.au Informative, Amusing, and Opinionated Blog - Over 600 posts on all aspects of building a new house. Re: Water pump size for no town water? 3Jan 19, 2017 7:53 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 5Jan 19, 2017 2:39 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 7Jan 19, 2017 8:21 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 10Jan 22, 2017 5:22 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 12Jan 22, 2017 10:48 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 15Jan 23, 2017 4:44 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 17Jan 23, 2017 8:55 pm It really depends on the pump. EDIT: Have a look at the video that I have linked below. It is well explained by keeping it uncomplicated by assuming a dead straight run of pipe. If you also pause on the pipe's friction loss chart, you will notice ID and OD as well as the type of pipe. Note that they are also correctly stating ID. https://www.youtube.com/watch?v=KTPKpJg6PsM 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 18Jan 24, 2017 11:00 am Getting very confused about all this now.. Re: Water pump size for no town water? 19Jan 24, 2017 11:43 am Just understand what is in the video I linked. The 3 different poly pipes have different IDs and pressure ratings but the Blue Stripe is available in several different pressure ratings...and IDs. You size the pipe plus some other allowances expressed as additional pipe length to the pump. It is easy to significantly decrease friction loss by choosing a pipe that has a larger ID. It requires X4 the head to double the flow rate through the same size pipe, it is much cheaper to buy a bigger pipe. The pump's pressure should not exceed the pipe's pressure rating. You also have the choice of using (the more expensive) uPVC pressure pipe. A class 9 (900 kPa) 32mm pressure pipe has an ID of 38.5mm and even the class 9 25mm pressure pipe has an ID of 30.5mm. Pressure pipe is commonly used for irrigation systems and its straight run has less friction loss than undulating poly pipe but flow rate calculators cannot factor this. If you look at this option, the irrigation outlets usually have cheaper pipe than the big green shed and buying 6 metre lengths is the most economical option. Class 9 pressure pipe is cheaper than class 12. You also have to compare the cost of the rolls of the poly pipes and their fittings, Blue Stripe is sold in shorter lengths cut off a roll but you will pay a premium per metre. You will find most irrigation outlets helpful and there is also a lot of information available online. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Water pump size for no town water? 20Jan 25, 2017 8:27 pm Chris, re your current house water pressure; If you will be there for a while yet, you could (possibly) have the Scala2 hooked up to the mains water at the house for use as a booster pump. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Dear Members I have to decide the Facade column size. My custom builder standard is 350mm with rendering, but i asked for 470mm plus stone or tiles and yet to get… 0 7570 |