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Old 26-04-2012, 19:50   #1
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Shot Watermaker feed pump - HELP!

I have a Italian made feed pump on a 140 Aqua-Set watermaker that has seen it's better day. I am have trouble translating the l/min and coming up with a replacement pump with the same pump curve.

Can anybody translate this ID card from the pump or have a suitible replacement option for this pump? I can purchased the same pump in Florida for about $1300 but was hoping to save money. The shaft seal is bad plus the moter is cooked. I was hoping to find a pump that will work with either 50/60hz.

Wil

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Old 27-04-2012, 03:29   #2
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From the name plate the pump is / was rated at 30 liters per minute at 19 meters head or 100 liters per minute at 13 meters head. Motor was 0.75 kilowatt or 1 hp and worked at 2900 rev per minute. I presume this was the low pressure feed pump.
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Old 27-04-2012, 04:40   #3
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Re: Shot Watermaker feed pump - HELP!

Thank you, I was having the a hard time with the 19/13. Now, I need to find a pump with these specs.

Wil

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Old 27-04-2012, 06:09   #4
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Re: Shot Watermaker feed pump - HELP!

If your shaft is corroded and the seal will not hold the water pressure, fix it with a stainless sleeve. I bought the kit at miller bearing and it works like a charm. Total cost was $30 per sleeve. My Jabsco pump had two seals.

Wear sleeves - SKF.com / Products / Interactive Engineering Catalogue/Industrial shaft seals
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Old 14-06-2012, 08:34   #5
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Re: Shot Watermaker feed pump - HELP!

1HP for a feed pump??? I drove my 40GPH high pressure pump with 1HP DC motor. This sounds like an overkill for a feed pump to me, unless your watermaker is gigantic. Wasn't able to find anything on 140 Aqua-Set. Could you list your brine and product ratings, and the HP of your high pressure pump?
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Old 18-06-2012, 09:13   #6
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Re: Shot Watermaker feed pump - HELP!

You should be able to calculate what you require. Try

HP = (flow in gallon/min)*(pressure in #/in^2)/1450

The number 1450 is about right, I forgot the exact number, it might be 1465 but 1450 is close.
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