[modeleng] Re: automatic draincocks

That's pretty much all they are, well, a reverse check valve on its 
side. Very simple device that works well.

Kenneth Swales wrote:
> Hi All
>
> A friend of mine has a Massie fitted with automatic draincocks.  I thought of 
> replacing my own draincocks with automatic ones so took one off his engine to 
> examine it.
>   
> To me it just looks like acheck valve on its side.  Is this right or am I 
> being too simplistic.
>
> Any thoughts.
>
> Ken
>
>
>       
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