Goodall valve
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Winn,
I suppose the delivery tube, when pressure is applied, expands just a wee bit to provide a seal. Looks so simple that even I can do it! What type of plastic or silicone tubing do you prefer for the delivery tube???
Once I get my work done I'll have to do some designing and get some hex stock.
THANKS!!!
Jack
I suppose the delivery tube, when pressure is applied, expands just a wee bit to provide a seal. Looks so simple that even I can do it! What type of plastic or silicone tubing do you prefer for the delivery tube???
Once I get my work done I'll have to do some designing and get some hex stock.
THANKS!!!
Jack
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1,544 Posts
Jack, I'm not sure what the tube is, it is what came with the squirt bottle I bought from Sulpher Springs. Don't know if they are still operating but they do still have a web site.
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339 Posts
Winn,
Thanks, no problem. I am guessing that any tubing will work.
Jack
Thanks, no problem. I am guessing that any tubing will work.
Jack
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1,544 Posts
I should have mentioned that the delivery tube is a clear plastic abuot 1/8 inch in dia. and quite stiff, not soft like the little piece on the end of the valve.
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339 Posts
Winn,
Thanks! That clarifies what it is a lot. I think it is the clear plastic fuel tubing I see in the hobby shop rather than the cloudy silicone tubing.
Jack
Thanks! That clarifies what it is a lot. I think it is the clear plastic fuel tubing I see in the hobby shop rather than the cloudy silicone tubing.
Jack
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7,276 Posts
for the delivery tube
Jack,
My squirt bottle has a brass nozzle, so both my filler valves (a Goodall and a Reppingen check valve) have a hole into which the nozzle tightly fits. It's possible the nozzle is tapered - I'll measure it if you want? Not sure where I got my squrirter. I recall that Home Depot had some that produced enough pressure without caving in.
Jack,
My squirt bottle has a brass nozzle, so both my filler valves (a Goodall and a Reppingen check valve) have a hole into which the nozzle tightly fits. It's possible the nozzle is tapered - I'll measure it if you want? Not sure where I got my squrirter. I recall that Home Depot had some that produced enough pressure without caving in.
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339 Posts
Pete,
Thanks! I am thinking that some have the taper brass nozzle and some may just use the tubing. I got some plastic tubing for the squirt bottle and some silicone tubing for the valve. I would appreciate knowing the taper if you understand how to measure it. In the mean time I'm going to try the tubing only method.
Jack
Thanks! I am thinking that some have the taper brass nozzle and some may just use the tubing. I got some plastic tubing for the squirt bottle and some silicone tubing for the valve. I would appreciate knowing the taper if you understand how to measure it. In the mean time I'm going to try the tubing only method.
Jack
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339 Posts
H,
I'm going to first try the no taper method first as you posted. Just got the tubing and plan on making the first valve tonight.
Jack
I'm going to first try the no taper method first as you posted. Just got the tubing and plan on making the first valve tonight.
Jack
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1,002 Posts
Jack,
if you make the squirt nozzle e.g. 1/8" OD and the valve opening 5/32" and use a thin tubing it will contract to less than 5/32" if you let it extend over the squirt nozzle, sealing against the chamfer. This was how I used it at first. Then I ran out of the thin tubing and replaced it by the thicker one. Now the seal is made by kind of a longitudinal compression of the tube. This seems to work also. An O-ring may also be an alternative.
Regards
if you make the squirt nozzle e.g. 1/8" OD and the valve opening 5/32" and use a thin tubing it will contract to less than 5/32" if you let it extend over the squirt nozzle, sealing against the chamfer. This was how I used it at first. Then I ran out of the thin tubing and replaced it by the thicker one. Now the seal is made by kind of a longitudinal compression of the tube. This seems to work also. An O-ring may also be an alternative.
Regards
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339 Posts
I just made the squirt bottle fitting and hooked up the tube. Now I will try for a dummy Goodall valve to test the simple plastic tube in the hole connection.
J
J
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339 Posts
I made a simple hole in a bit of brass. A #2 drill was used for the tubing I have. I eased the sharp edge a bit with a counter sink. Stuck the tube in the hole and it worked as advertised. Plain tube in the preciesly fitted hole wins as being functional and easy! On to make an actual valve later. Thanks for all the chatter on goodall valves!
Jack
Jack
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7,276 Posts
I would appreciate knowing the taper
Jack,
I got the bottle out of my steam carrying case, and noted it says Delta Industries on the bottom.
The brass nozzle has a short piece fitted into the clear plastic delivery tube. The exposed spraying end is 0.45" long, 0.19"in at its widest (where it plugs into the delivery tube) and 0.16" at the tip. Looks like it will fit snugly in a 3/16 hole or smaller? Certainly works for me.
Jack,
I got the bottle out of my steam carrying case, and noted it says Delta Industries on the bottom.
The brass nozzle has a short piece fitted into the clear plastic delivery tube. The exposed spraying end is 0.45" long, 0.19"in at its widest (where it plugs into the delivery tube) and 0.16" at the tip. Looks like it will fit snugly in a 3/16 hole or smaller? Certainly works for me.
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