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<blockquote data-quote="som farmer" data-source="post: 7752787" data-attributes="member: 86168"><p>the NZ fast flow ones are good, at £40ish they should be, the ordinary brass high pressure one cope well, and we have some 'cheapie' ones from mvf, fast flow, £15ish, they were bought when we were low pressure, but they work. Leaks do not worry us, on our own supply, if we were mains ..... One of the biggest 'problems' is where manufacturers, in trying to reduce cost, the arm and ball, tend to catch under the smaller boxes.</p><p> On the pressure side, it's all about friction, and size of pipe, the bigger the pipe, the less friction, so the lower the pressure, our pressure on the top fields would be 'low', we compensate by having 500 gallon troughs, bottom fields, 18x18x10 troughs would cope, but we try and use big troughs all round, you then have a 'reserve' in case of problems. Ideally we would be 50mm pipe, all round, but we are not, so have to rely on 32mm and pressure.</p></blockquote><p></p>
[QUOTE="som farmer, post: 7752787, member: 86168"] the NZ fast flow ones are good, at £40ish they should be, the ordinary brass high pressure one cope well, and we have some 'cheapie' ones from mvf, fast flow, £15ish, they were bought when we were low pressure, but they work. Leaks do not worry us, on our own supply, if we were mains ..... One of the biggest 'problems' is where manufacturers, in trying to reduce cost, the arm and ball, tend to catch under the smaller boxes. On the pressure side, it's all about friction, and size of pipe, the bigger the pipe, the less friction, so the lower the pressure, our pressure on the top fields would be 'low', we compensate by having 500 gallon troughs, bottom fields, 18x18x10 troughs would cope, but we try and use big troughs all round, you then have a 'reserve' in case of problems. Ideally we would be 50mm pipe, all round, but we are not, so have to rely on 32mm and pressure. [/QUOTE]
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