|
|
Post by dodge359 on May 11, 2020 21:47:05 GMT -5
Hi just picked up this pump. looks just like Xl pump. but without aux fuel tank. Can they be run with marine tank ? any idea what year it was made. Attachments:
|
|
|
|
Post by rowdy235 on May 11, 2020 22:09:07 GMT -5
That’s a new one for me. How long does it run on the built in tank? I can’t imagine you’d get a very long runtime.
I’m sure you could rig up a fitting to attach a marine tank, but I’m not sure how much “umph” the diaphragm in the carburetor has to pull fuel from an external tank. I’d keep the hose as short as possible and put in a squeeze bulb so you can prime the system.
|
|
|
|
Post by 5terrysupersaws on May 11, 2020 22:31:34 GMT -5
Hi just picked up this pump. looks just like Xl pump. but without aux fuel tank. Can they be run with marine tank ? any idea what year it was made. Welcome to the House of Homelite ! +UT:50011 ( XLS 1-1/2 ) SN:T7800193 .. Date of Manufacture: 1978
It's a Terry XL-12 engine , 54cc . Auxiliary 2-3/4 quart fuel tank kit: A-121772 |
|
|
|
Post by dodge359 on May 11, 2020 22:51:02 GMT -5
thanks for info greatly appreciated. have not even run it yet.
|
|
|
|
Post by sweepleader on May 12, 2020 8:23:05 GMT -5
My XLA-115 generator has provisions for drawing fuel from an aux tank. I would think that the factory expectations were that the aux tank sat on the ground next to the gen and the suction requirements on the fuel pump were very small.
The aux tank is connected via a small 3 way valve in the fuel line, nothing special. As long as the fuel line is small and does not contain a lot of air, I don't think anything else would be needed. In this case the end of the aux fuel line is just dropped in the aux tank which probably was expected to be a 5 gallon military can.
|
|
|
|
Post by dodge359 on May 12, 2020 12:37:10 GMT -5
thanks will try it. i just found an aux strap on tank on ebay too. but for bigger jobs a bigger tank would be nice, what kind of nozzlw should i get for this pump. i have 1 1/2 inch firehose already. would those red nylon nozzles work ok ?  |
|
|
|
Post by rowdy235 on May 12, 2020 13:11:20 GMT -5
The nozzle itself will work fine but you will want to keep a close eye on the pressure. The pump is not built for high pressures like a firefighting pump and it will likely damage the seals if the pressure gets too high. I’d recommend either a pressure gauge or some type of failsafe pressure relief valve. I installed a gauge on my xl 1-1/2 pump that I monitor while running, I prefer to keep the pressure below 50psi. Here’s a link to a fire tank I made that utilizes my xl pump houseofhomelite.proboards.com/thread/6791/water-tank-project |
|
|
|
Post by dodge359 on May 12, 2020 15:20:09 GMT -5
good ideas thanks
|
|
|
|
Post by sweepleader on May 12, 2020 16:51:17 GMT -5
Just noticed that you called it a T78 pump, that means Terry 1978, it is not a model.
Like 5terrysupersaws mentioned it is an XLS 1-1/2. Nice pump.
|
|
|
|
Post by Clasec on May 12, 2020 22:00:14 GMT -5
|
|
|
|
Post by sweepleader on May 13, 2020 9:14:20 GMT -5
Beware of the threads on the various hose fittings you use. Some will be NPT others may be NH or other fire hose threads. NH is the most common fire fitting thread but there are MANY others that are not compatible. NH and NPT will not engage properly, they will damage each other. Most hardware store stuff is NPT but ordering on line can result in just about anything you might name.
Pressure will not hurt the pump but if you close off the outlet by shutting the nozzle, do not let the pump run for long. All the horsepower the engine is making is absorbed in the water in the pump, the pump may quickly overheat. I am not certain how big a problem that is with a small pump but it can cause damage in a very few minutes to a fire truck pump. It would be my opinion that it is a question best not answered due to the costs involved.
Anyone have the pressure vs flow ratings for the 1 1/2 pump?
|
|
|
|
Post by rowdy235 on May 13, 2020 11:37:48 GMT -5
Anyone have the pressure vs flow ratings for the 1 1/2 pump? When I first got my XL1-1/2 I found a brochure on Leon's website that listed as 4300gph, which I assume is at no restriction. The same brochure lists total head lift as 145 feet. I located an equation to calculate pressure, p = 0.433 h SG, where p is pressure, h is head lift (in feet and PSI respectively), and SG is specific gravity of the fluid being pumped (1 for fresh water). This works out to a maximum pressure of roughly 63 psi. If anybody has any different numbers, I would be interested to see them  |
|
|
|
Post by sweepleader on May 14, 2020 7:37:40 GMT -5
Those numbers sound about right from what I have seen in the past, generally, not specific to that pump. Thanks.
I use 2:1 as the ratio between head in feet and pressure in psi. Close enough for normal guesses. 4300 gph is about 71 gpm so 70/70 for maximums I guess. That is pretty good output for such a compact and lightweight pump.
I am sure your assumption that the output rating is a no restriction number is correct. When I tested pumps at work, the height of the tank feeding the pump and receiving the output was subtracted from the numbers so only the pump's contribution was included. It would be very interesting to see a performance curve for this pump, with pressure and flow graphed over the range the pump would run. Sorry for the nerdiness, many years testing pumps is hard to get away from.
|
|
