Discussion
hornetrider said:
Antony Moxey said:
hat's the bit I didn't get - what's stopping water pissing in while you're pushing your umbrella down the hole? And then what stops it pissing through again once you've finished and pull the umbrella back through?
Nothing. But that's what the valve is there for in the first place, and the amount will be minimal.Antony Moxey said:
hornetrider said:
Antony Moxey said:
hat's the bit I didn't get - what's stopping water pissing in while you're pushing your umbrella down the hole? And then what stops it pissing through again once you've finished and pull the umbrella back through?
Nothing. But that's what the valve is there for in the first place, and the amount will be minimal.I can't answer on the decent seal bit, but presumably they have done their tests.
hornetrider said:
Antony Moxey said:
hornetrider said:
Antony Moxey said:
hat's the bit I didn't get - what's stopping water pissing in while you're pushing your umbrella down the hole? And then what stops it pissing through again once you've finished and pull the umbrella back through?
Nothing. But that's what the valve is there for in the first place, and the amount will be minimal.I can't answer on the decent seal bit, but presumably they have done their tests.
You household mains cold tap typically has around 2 to 3 bar of water pressure behind it.
1 bar is 10meters head of plain water (slightly more for salty water), so that's equivalent to opening a tap in the bottom of a boat with a 20m draft! That's a BIG boat!
A small yacht may mave stop cocks that are possibly 1 to 2m "deep" meaning just 0.1 to 0.2 bar pressure behind them! Not much, easily stopped by just putting your finger over the hole!
rubystone said:
I thought the sea cock thingy was genius. Totally understand how it works, but would like to know whether they have tested it when the hull is in motion through the water? Especially on s displacement hull....
Really good presentation - farther & son team - brilliantly simple solution ect... But I (not being an able seaman) would like to have seen a demo rig for their pitch, which might also have shut Duncan up too.
1. If the pressure is so low at these sea cocks and a little bit of water getting in through them and joining other bilge water is OK, why not just quickly screw some sort of temporary cap onto the sea cock while you're working on the more permanent inner pipework/valve. Presumably the hull bit is threaded otherwise how does the more permanent valve usually get attached?
2. How many boats are in practice lost to the problem of these open hull cocks anyway? Enough to mandate every boat having to carry these devices, which seemed to be their ultimate aim? He said if he was on a boat crossing the Atlantic he'd rather have his device than a lifejacket, but I thought a bigger danger to ocean crossing boats was hitting things like semi submerged containers, not a valve popping off.
3. They also claimed it would save money because you would not have to take the boat out of water any more but don't they take boats out of water for other things such as to inspect or clean the hull? As a boat owner would you not try to do the valve work while the boat was being taken out of the water for other reasons anyway, which you'd still need to do, this fancy device or not?
Had to laugh when they showed that massive coverage they'd had in Yachting Monthly yet the website had only shown 300 hits. Wow.
They should definitely have spent a few quid on a decent demo, it was hard to see what he was on about with the valve in his hand, but a small mockup of a section of boat hull with cock in it, all in a tank with one side full of coloured water, would have gone miles towards explaining which bits were permanently attached to the hull and what their device replaced / blocked.
2. How many boats are in practice lost to the problem of these open hull cocks anyway? Enough to mandate every boat having to carry these devices, which seemed to be their ultimate aim? He said if he was on a boat crossing the Atlantic he'd rather have his device than a lifejacket, but I thought a bigger danger to ocean crossing boats was hitting things like semi submerged containers, not a valve popping off.
3. They also claimed it would save money because you would not have to take the boat out of water any more but don't they take boats out of water for other things such as to inspect or clean the hull? As a boat owner would you not try to do the valve work while the boat was being taken out of the water for other reasons anyway, which you'd still need to do, this fancy device or not?
Had to laugh when they showed that massive coverage they'd had in Yachting Monthly yet the website had only shown 300 hits. Wow.
They should definitely have spent a few quid on a decent demo, it was hard to see what he was on about with the valve in his hand, but a small mockup of a section of boat hull with cock in it, all in a tank with one side full of coloured water, would have gone miles towards explaining which bits were permanently attached to the hull and what their device replaced / blocked.
Laurel Green said:
The flange to the right of the cock will be the hull. Disconnect the pipework from the cock, open the cock and push the 'new invention' through the cock - water pressure will then seal against the hull and the cock can then be removed for replacement.
Really liked this solution for replacing a dicky sea cock, don't really understand why they didn't clarify water pressure for Duncan Bannatyne, maybe it was the editing.
Why aren't sea cocks stainless steel ball valves ? With many years experience in chemical plants never had a problem with stainless valves, have seen defective cast steel ball valves on several occasions with catastrophic consequences, stainless cost more say x10 more so £150 vs £15 for a 1" valve, but never had one fail.
Why aren't sea cocks stainless steel ball valves ? With many years experience in chemical plants never had a problem with stainless valves, have seen defective cast steel ball valves on several occasions with catastrophic consequences, stainless cost more say x10 more so £150 vs £15 for a 1" valve, but never had one fail.
He's right on the local council permit issue, wheels or not, they will just say "don't care about the wheels, it's a skip, give us lots of money thanks".
That's assuming they don't all just get nicked or sabotaged (lots of unsavoury characters in the skip industry), there's a reason the companies that put those giant LED temporary roadworks signs out always take the wheels off them.
That's assuming they don't all just get nicked or sabotaged (lots of unsavoury characters in the skip industry), there's a reason the companies that put those giant LED temporary roadworks signs out always take the wheels off them.
Can you really be called an entrepeneur when you're just buying into someone else's suit shop franchise?
edit: looks like the wheels came off some time ago as they've not updated the institchu uk facebook or twitter since middle of last year.
edit: looks like the wheels came off some time ago as they've not updated the institchu uk facebook or twitter since middle of last year.
Edited by kev1974 on Sunday 15th March 21:48
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