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Post by Phil Sutton on Aug 30, 2004 19:16:48 GMT
In a simliar vein to Keith W.,I would like the lists thought on the following.
The Winson 1400 has 3 feed points,a top feed for the cross head pump,and 2 feeds on the backhead for the injector and the hand pump.
I wish to have a model of a non-top feed boilered 1400,will it be ok to plumb the 2 pumps together through one clack and the injector through the other?
Will this affect steam generation and boiler life?
Tia.Phil
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Post by Tel on Aug 30, 2004 20:38:03 GMT
One practice is to run the delivery line from the cross head or axle pump through the hand pump, the theory being that it keeps the valve boxes working.
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Garry
Active Member
Posts: 45
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Post by Garry on Aug 31, 2004 7:36:24 GMT
I dont know about putting two pipes into one check valve as you might get unwanted back pressure, but, when I needed extra inlets for the boiler on the backhead on my loco I made a small block to screw into one of the bushed holes and on this block screwed 3 check valves which all work okay.
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Post by Deleted on Aug 31, 2004 18:08:58 GMT
Tell, This one has set me grey sells at work, the delivery of the axle feed pump trough the hand pump. I came up with the arrangement of the delivery into the hand pump chamber. When the axle pump delivers the inlet of the hand pump closes and the outlet opens so water passes true. When the pump takes in water it works in the normal way. Now with the axle pump not working the hand pump draws water trough it’s own suction valve and the axle pump delivery and suction valve. Closing the whole lot when delivering and opening the delivery valve. Or am I overlooking something. Regards Wilfried Vermeiren users.skynet.be/modelbouw.wilfried |
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Post by Phil Sutton on Aug 31, 2004 19:06:36 GMT
I had thought of using a "T" piece and extra one way valves in the feed pipes to make sure the water goes where it's supposed to and not back through the pumps and short circuiting the supply back to the water tanks.Take it as read that I will fit a balancing pipe between the tanks.
Phil
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Post by Tel on Aug 31, 2004 21:17:02 GMT
Yeah Wilf, the axle pump will simply push the water thru' the valve box of the hand pump - lifting the balls off the seats in the process. When using the hand pump it is the same - the pump draws water thru' the valve box of the axle pump, again lifting the balls. Ram position on whichever is the idle pump will not affect the operation (unless you have one of those peculiar LBSC pumps with a 'tit' projecting into the passage between the valve chambers).
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JohnP
Hi-poster
Posts: 186
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Post by JohnP on Sept 1, 2004 11:35:27 GMT
Only thing to remember is to close the bypass when you are using the hand pump.
JohnP
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Post by Phil Sutton on Sept 1, 2004 19:32:56 GMT
If I put a one way valve in the hand pump delivery,there should be no need for that should there?
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Post by DaveBeaman on Sept 1, 2004 19:52:57 GMT
My Beyer Peacock works on that principal Tel.
I forgot to tell my mate to close the bypass when I asked him to top the boiler up before lighting up. He had been pumping away for 10 mins without the water coming into sight, he thought the pump was shot!
Dave.
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Post by Tel on Sept 1, 2004 22:22:51 GMT
Ya - it's a trap for young players - you need a stoker to keep feedin' black puddin' into the pump man to keep 'im goin'
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