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Post by DIYDafty on Nov 22, 2020 22:21:20 GMT
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Post by jcplumb on Nov 23, 2020 13:58:49 GMT
Hi Dafty  The link for the tech drawing isn't working. Those Bristan easyfit have a bad rep for the tap blowing off and creating a bespoke water feature in your kitchen. I refuse to fit them. There's a grub screw that works loose over time and allows it to come apart. Choose another tap mate. |
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Post by woodbine66 on Nov 23, 2020 14:19:10 GMT
- the main downside being that bloody Bisby is involved in flogging them. Dodgy roger.  |
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Post by woodbine66 on Nov 23, 2020 14:24:32 GMT
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Post by DIYDafty on Nov 23, 2020 18:26:04 GMT
Bloody hell thanks for the warning. Shame. How am I to get a reasonably low/mid priced decent tap that can handle as low pressure as possible ? A lot of the cheap stuff on amazon seems for the euro market and high pressure only. This link of the tap dimensions should work but probably not relevant now although that Hamish bloke did say they've corrected the fault? Hmmmm www.bristan.com/product-files/549253/tech-drawing.jpg |
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Post by DIYDafty on Nov 23, 2020 18:29:51 GMT
Also interesting Bristan's own video from 2019 (after the Hamish warnings) seem to imply the solution is simply to tighten the grub screws more using a lever. I'd have thought loctite or similar would be good too but all looks a bit amateurish to me.
FAQs at the bottom of that page are interesting too.
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Post by cluelesskarl on Nov 23, 2020 19:44:39 GMT
A bit of Loctite would do the trick on the grub scew, but I am concerned the heat cycle/vibration would wear the mating of screw to base. Unlikely, but over time...
HOWEVER, if the idea is to change the tap easily, good luck not "camming out" those fragile heads. They would need to be drilled out. It might be slightly quicker, but for peace of mind,I would absolutely go with "traditional" ones.
As is well known... I am not a (water) plumber, but I have worked on high pressure systems, 700bar, lifts, cranes, JCBs' etc, so a lot less in domestic! Still, a mess is a mess!!   Even worse if you have to fly back from abroad/get your "emergency" plumber in. |
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Post by rocketmanbkk on Nov 23, 2020 19:50:09 GMT
Hi Dafty The link for the tech drawing isn't working. Those Bristan easyfit have a bad rep for the tap blowing off and creating a bespoke water feature in your kitchen. I refuse to fit them. There's a grub screw that works loose over time and allows it to come apart. Choose another tap mate. Totally agree They’re shite |
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Post by DIYDafty on Nov 23, 2020 21:37:41 GMT
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Post by jcplumb on Nov 24, 2020 14:11:57 GMT
If it says a check valve must be fitted to the hot then yes, it's to stop higher pressure cold forcing its way up the hot feed to the cylinder.
To be sure you need to get a tap that is dual flow, loads come up when you google it.
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Post by jcplumb on Nov 24, 2020 14:15:53 GMT
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Post by DIYDafty on Nov 24, 2020 21:18:52 GMT
Thanks a lot JC that makes sense and I know what to look for now.
That TS tap seems ideal except its the wrong shape for the wife (and the estate agent) haha
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Post by DIYDafty on Nov 24, 2020 21:25:37 GMT
Right so thanks to your spot on advice, I started reading about single/dual flow. support.tapsuk.com/hc/en-us/articles/204386727-What-is-single-or-dual-flow-tap-Its not a big deal I suppose but this shop seems to think single flow has a reduced flow (everything else being equal) so maybe I should fit check valves....bloody hell....off to check the space....hmmm not a huge amount of space and the valves are quite long plus I wanted all compression fittings visible. Maybe dual flow it is. |
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Post by DIYDafty on Nov 24, 2020 21:38:17 GMT
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Post by woodbine66 on Nov 24, 2020 21:39:04 GMT
Right so thanks to your spot on advice, I started reading about single/dual flow. support.tapsuk.com/hc/en-us/articles/204386727-What-is-single-or-dual-flow-tap-Its not a big deal I suppose but this shop seems to think single flow has a reduced flow (everything else being equal) so maybe I should fit check valves....bloody hell....off to check the space....hmmm not a huge amount of space and the valves are quite long plus I wanted all compression fittings visible. Maybe dual flow it is.
JC's recommendation for dual flow is a good one. I wouldn't fit a check valve unless you really need to. CVs, isolation valves and flexis with narrow bore all restrict flow. If you have low to average hot flow to the kitchen tap, I would fit as little of those things as possible. OK, you may not be able to avoid flexis on some taps, but leaving off the CV and iso valves can help hot flow.
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