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Brews & Views Bulletin Board Service * Brews and Views Archive 2003 * April 1, 2003 * Pump help - leaking < Previous Next >

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Milan Bartolec (135.214.42.162)
Posted on Wednesday, March 05, 2003 - 01:58 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I have a Shurflo pump that I purchased less than a year ago. As I was putting my system back together this weekend and did a test run with hot water and PBW. Noticed it leaked a little so I attempted to tighten the fitting - which went easy, and although I didn't think I cranked too hard it began to leak more, and there was a crack on the output fitting of the pump. It runs accross the length of the thread, perpendicularly.

Before buying a new pump I was going to try and seal it some how with a Food Grade High temp silicon sealer. Can anyone suggest a brand or where I can find such a sealer?

I have a brass nipple fitting that I screw into the OUTPUT side of the pump so I was thinking that I could screw that in and then put the sealer on. In effect making a short extention to the output side of the pump. Do I have a chance in hell of this working?
 

ELK (66.219.192.12)
Posted on Wednesday, March 05, 2003 - 02:25 am:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

probably not...Maybe you can buy a new housing..Thats the bad thing about those NPT threads...they act just like a wedge.
 

Vance Barnes (12.98.224.90)
Posted on Wednesday, March 05, 2003 - 02:56 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

HD/Lowes carries a epoxy called JB Weld that is approved for pottable water. Don't know about it's heat rating but it would probably be OK. I've used it on a leaking jacuzzi fitting before with good results. VB
 

Bill Pierce (12.249.104.53)
Posted on Wednesday, March 05, 2003 - 03:11 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

JB Weld is worth a try. If it doesn't work you will have to replace the pump housing.
 

ELK (66.219.192.12)
Posted on Wednesday, March 05, 2003 - 03:40 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I just read a post on a guys brewery and his housing split at the threads..He had real trouble finding the correct housing and when He found one that worked the tolerances were off and his impellers would rub when hot..Finally replaced with a good March pump..Some other brewery posts made it clear to leave a little flex in your pump plumbing for thermal expansion..Like a short length of hose instead of all hard plumbed.
 

Dan Schultz (63.224.229.248)
Posted on Wednesday, March 05, 2003 - 04:48 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Milan, are you sure that's where the crack is and that it's an actual crack? When molding those fittings, the mold parting line is perpendicular to the threads and leaves a witness mark. It's pretty tough to break a male NPT thread since it's in compression (which is why I advice against female NPT threads for plastic fittings).
 

Milan Bartolec (135.214.150.100)
Posted on Wednesday, March 05, 2003 - 10:09 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

I'm sure its a crack. Water sprays out.

Checked out Moving Brews Web site, but their ordering page says they've been out since Dec 2001. Any one know if they are still in business and taking orders?
 

Bill Pierce (208.57.122.28)
Posted on Wednesday, March 05, 2003 - 10:48 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Bill Stewart has placed Moving Brews on what appears to be a permanent hold. The demands of his real job got to be too much.
 

Milan Bartolec (135.214.150.100)
Posted on Wednesday, March 05, 2003 - 11:13 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Rats!

What do people think of these pumps:

Grainger Little Giant: 2P039 search for this part number
or
March MDXT-MT3
March MDXT-3
or
B3 pump
 

ELK (66.219.192.12)
Posted on Wednesday, March 05, 2003 - 11:39 pm:   Edit Post Delete Post View Post/Check IP    Ban Poster IP (Moderator/Admin only)

Magnetic Drive Pump, Flow @ Total Head 8.3 Gallons per Minute, Power Rating 1/25 HP, Current Rating 1.3 Amperes, Voltage @ 60 hz 115 Volts, Outlet 1/2 MPT Inch, Inlet 1/2 MPT Inch, Maximum little giant is rated for only 200 which is kinda close to what we might be running.....From Grainger..1/25 Hp seems about right to me..What hp was your old one..I cant pull up those march pumps..B3 says all the right stuff in there description and I'm sure they know what it takes.

" Pressure 30 PSI, Pressure 7 PSI, Maximum Head 16.2 Feet, Motor Enclosure OPFC, Motor SP, Maximum Temperature 200 Degrees Fahrenheit, Operating Temperature @ Maximum Pressure 135 Degrees Fahrenheit, Water Flow @ 15 Feet of Head 1.7 Gallons per Minute, Water Flow @ 3 Feet of Head 7.6 Gallons per Minute

Your Price: $137.55 Usually
Grainger Item#: 2P039 Ships : Today

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