[Public-list] Original gatevalve sizes

[John Birch]

Plus there are machine roll/round cut threads and sharp cut threads - you 
need threads that match both male and female - best to buy from the same 
supplier.
Did all out through hulls a while ago - Crittenden won't fit with Grocco, 
etc.
Tapered with straight and on and on ...
Always a joy like Whitworth with Imperial or Imperial with Metric or Metric 
with Whitworth - such fun.
Is plot me thinks ; )

Cheers,
John

----- Original Message ----- 
From: "George Dinwiddie" <gdinwiddie at alberg30.org>
To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
Sent: Sunday, April 03, 2005 10:19 PM
Subject: Re: [Public-list] Original gatevalve sizes


> sousa, stephen (ENG) wrote:
>> Jack,
>>
>> Back on topic, could one mate a bronze thru-hull with a brass ball-valve 
>> with some semblance of expectations of safety/durability?
>>
>> I am not sure of the thread in Canada, in the US the answer is no. The
>> threads are different and do not mate exactly.
>
> Are you speaking of the difference between tapered pipe threads and 
> straight threads?  Plumbing fittings have tapered threads. Through-hulls 
> and seacocks have straight threads.
>
>  - George
>
> -- 
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