clack valve position

[michael burton 1Participant @michaelburton1]

So I was wondering clack valves for water inlet on most loco boilers etc are along the centre line of the sides of the boiler tube……. now I read that they can also be put as a top feed along the centre line along the the top of the tube say on a horizontal marine boiler.

Is there any benifit to one way or another as long as there kept away from the firebox end

All explainsons welcome

Thanks mike

[michael burton 1Participant @michaelburton1]

[John BaguleyParticipant @johnbaguley78655]

I doubt it will make much difference in our sizes. In full size, the water issuing from top feeds fell onto perforated trays which gave it time to absorb some heat from the steam before mixing with the water in the boiler. It also helped to deposit some of the minerals out of the feed water onto the trays rather than in the boiler itself.

John

[FMESParticipant @fmes]

Posted by michael burton 1 on 14/01/2015 16:22:59:

Is there any benifit to one way or another as long as there kept away from the firebox end

All explainsons welcome

Thanks mike

Mine are on the backhead of my Sweetpea for ease of access, never any problems .

[Author]

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