Hand Pump Faucet Priming and Holding Prime? - Fiberglass RV


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Old 06-11-2010, 09:57 PM   #1
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Trailer: 1975 Trillium 13 ft / 2002 Honda Odyssey
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Hi all,

Our trillium (circa 1975) has a hand pump faucet at the sink that is connected to a 12 gal storage tank that we haven't used before. The pump is chrome with a round black plastic ball on the end of the pump handle and the sticker on the underside has a coleman logo on it.

I am trying to get everything up and running and have a few questions for anyone that uses this setup: 1. what is the best way to prime the hand pump or should it be self priming? 2. once primed ( i had to suck the water up into the valve body to get it working) how long should i expect the pump to hold its prime? I have already trimmed and re-attached the 3/8" water line going to the tank (it is PE plastic and had little stress cracks in it at the barb fittings that were letting in some air) but I am now tempted to replace the line altogether with something that isn't 35 years old.

I want to make sure my expectations for how this pump should work are realistic.

thanks,
we are trying to get everything ready for a 3 week trip through new brunswick leaving next thursday but the past few days things are coming apart faster than I can get things together.

Kevin
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Old 06-11-2010, 10:10 PM   #2
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Trailer: 13 ft Scamp / Silver Ford 150
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I was sufficiently annoyed with the new pump that came with my new Scamp - wouldn't hold its prime at all - that I bought something called the Rocket Hand Pump from Amazon - under $30, that seems to hold its prime for days. It's also self priming. I like it a lot.
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Old 06-11-2010, 10:30 PM   #3
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New River AZ
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Quote:
I was sufficiently annoyed with the new pump that came with my new Scamp - wouldn't hold its prime at all - that I bought something called the Rocket Hand Pump from Amazon - under $30, that seems to hold its prime for days. It's also self priming. I like it a lot.
That's a nice hand pump and it got good reviews;

http://www.amazon.com/Valterra-Products-RP...3187&sr=8-1
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Old 06-12-2010, 01:54 PM   #4
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Name: Larry H
Trailer: Trillium
Arizona
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Hello Kevin,
The new hand pump I installed on my Trillium would not hold a prime... water kept draining back to the tank.
The cure was a small 'check valve' installed in the supply line just below the hand pump. Now the hand pump
pumps on the first stroke every time. Here is the valve I used:

http://www.usplastic.com/catalog/item.aspx...9&catid=489

Good Luck,
Larry H
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Old 06-12-2010, 09:11 PM   #5
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Trailer: 1975 Trillium 13 ft / 2002 Honda Odyssey
Posts: 57
Quote:
Hello Kevin,
The new hand pump I installed on my Trillium would not hold a prime... water kept draining back to the tank.
The cure was a small 'check valve' installed in the supply line just below the hand pump. Now the hand pump
pumps on the first stroke every time. Here is the valve I used:

http://www.usplastic.com/catalog/item.aspx...9&catid=489

Good Luck,
Larry H
Thanks Larry, that'll be the ticket.

that looks cheap and easy to install, I'll keep my eye out for one and I think I might install it where the line connects to the holding tank (easier to get at).

great advice.
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Old 06-13-2010, 08:37 AM   #6
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Name: Larry H
Trailer: Trillium
Arizona
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You are welcome.
I ordered two valves directly from the company. As I recall the shipping was reasonable and quick.
Larry H
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