- Joined
- Oct 7, 2002
- RO Number
- 10399
- Messages
- 303
Vic et. al.,
Late last fall, my almost new Purasan Hold n Treat system "blew up" blowing out the chemical feed line and spraying the bilge with stuff... It took awhile to get everything cleaned out, the unit removed and all lines cleaned out. The Purasan was NOT plugged, nor was any discharge line.
My continuing search turned up a couple of issues: 1. The discharge thru hull was an existing one over 3' below the waterline, which creates some added "back pressure". 2. The thru hull discharge is only 1.25" while the Purasan uses 1.5" discharge. 3. The existing diaphragm pump from the holding tank pumps a LOT of volume very fast... the Purasan unit was flexing some as the pump ran.
A HA! I wanted to put a valve in between the pump and the Purasan unit in case I ever needed to open the system up again... installed a 1.5" ball valve and set it about half open. This reduces the volume the pump was pushing into the Purasan down to a level the discharge side adequately handles. Result is a successful installation!
Thanks to Vic for his telephone assist and council... If the pump had less volume discharge and the thru hull was near the waterline as Raritan recommends, the problem would not have existed. But understanding the system and making adjustments has created a good working system.
Delaware Jim
Late last fall, my almost new Purasan Hold n Treat system "blew up" blowing out the chemical feed line and spraying the bilge with stuff... It took awhile to get everything cleaned out, the unit removed and all lines cleaned out. The Purasan was NOT plugged, nor was any discharge line.
My continuing search turned up a couple of issues: 1. The discharge thru hull was an existing one over 3' below the waterline, which creates some added "back pressure". 2. The thru hull discharge is only 1.25" while the Purasan uses 1.5" discharge. 3. The existing diaphragm pump from the holding tank pumps a LOT of volume very fast... the Purasan unit was flexing some as the pump ran.
A HA! I wanted to put a valve in between the pump and the Purasan unit in case I ever needed to open the system up again... installed a 1.5" ball valve and set it about half open. This reduces the volume the pump was pushing into the Purasan down to a level the discharge side adequately handles. Result is a successful installation!
Thanks to Vic for his telephone assist and council... If the pump had less volume discharge and the thru hull was near the waterline as Raritan recommends, the problem would not have existed. But understanding the system and making adjustments has created a good working system.
Delaware Jim
