Go Back   Trawler Forum > Maintenance and Systems > Other Trawler Systems

Thread Tools Display Modes
Old 02-17-2010, 04:39 AM   #1
Keith's Avatar
Vessel Name: Anastasia III
Vessel Model: Krogen 42
Join Date: Oct 2007
Posts: 2,716
VSD pump with accumulator tank?

I'm putting in a VSD (variable speed) FW pump to replace my old diapharagm type. I know it doesn't need an accumulator tank, but would it hurt to leave one in the circuit? I'm worried about expansion in the hot water tank. If I take the accumulator tank out and put in a check valve, the hot water will dribble out the pressure relief valve on the HW heater.

Keith is offline   Reply With Quote
Old 02-17-2010, 03:32 PM   #2
Senior Member
Join Date: Oct 2007
Posts: 138
RE: VSD pump with accumulator tank?

Kinda sounds to me like you need a new relief valve.

LarryW is offline   Reply With Quote
Old 02-18-2010, 07:33 AM   #3
koliver's Avatar
City: Saltspring Island
Country: BC, canada
Vessel Name: Retreat
Vessel Model: C&L 44
Join Date: Nov 2007
Posts: 1,660
RE: VSD pump with accumulator tank?

I changed from diaphragm type to impeller type years ago, without taking out the accumulator tank. when the accumulator failed I got a new one, as the pump cycles so much less with it. Now any overnight water usage (less than an accumulator full) willl not wake other sleepers.
koliver is offline   Reply With Quote
Old 02-19-2010, 03:28 AM   #4
FF's Avatar
Join Date: Oct 2007
Posts: 14,908
RE: VSD pump with accumulator tank?

The accumulator will be useful with the new pump.

The HW heater will stop dribeling with a place for the pressure to go.

The FW pump will also stop "softer" , which will extend its life.

AS an Offshore thinking guy (even tho we don't get there often enough ) I prefer to Hard Mount the FW pump, so I hear it run , esp at night .

Blowing the FW tank doesn't matter much on inshore cruises , but old habits die hard.

FF is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Lehman 120 Part-New RAW WATER PUMP drive for original Jabsco Pump JohnP Classifieds 3 03-18-2012 06:27 PM
Holding tank and water tank=which side for pump out and fill??? Fighterpilot Californian 19 11-22-2011 05:10 PM
Electric Fuel pump Bypass Mechanical Pump MauleOne Power Systems 9 08-01-2011 10:59 AM
Accumulator pressure Piers General Maintenance 12 11-03-2009 04:08 PM
Accumulator pressure Piers Other Trawler Systems 0 10-24-2009 01:32 PM

All times are GMT -5. The time now is 01:15 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012