Tankless water heater and Moen positemp pressure-balanced shower valve - Plumbing Zone - Professional Plumbers Forum
CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!

Go Back   Plumbing Zone - Professional Plumbers Forum > Professional Plumbers Forum > Residential Plumbing


Like Tree4Likes
  • 2 Post By Fatpat
  • 2 Post By Logtec
Reply
 
Thread Tools Display Modes
Old 06-17-2019, 05:35 PM   #1
Junior Member
 
Join Date: Feb 2019
Location: Toronto, Canada
Posts: 29

View VictorPlumber's Photo Album My Photos
Default Tankless water heater and Moen positemp pressure-balanced shower valve

Hello all:

Client called me:
Tankless water heater, Moen positemp pressure-balanced tub/shower valve. When water goes thru bottom spout – temperature is hot enough, when diverter switched to go to top shower head – water coming from shower head is luke warm.

Everywhere else temperature is ok. One shower/tub in a house.

I think hot water pressure is less than cold and cold water overpowers hot water in pressurised shower riser.

What if I take out pressure-balancing spool from 1222 cartridge – would it work without spool? Is it possible to do?
Client doesn’t have small children so scalding is ok.

How would you fix it so it would be possible to take hot shower ?

Would appreciate any ideas.
Thanks.
VictorPlumber is offline   Reply With Quote

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. PlumbingZone.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Sponsored Links
Advertisement
 
Old 06-17-2019, 06:02 PM   #2
Senior Member
 
Fatpat's Avatar
 
Join Date: Nov 2015
Location: Long Beach, CA
Posts: 623

View Fatpat's Photo Album My Photos
Default

Quote:
Originally Posted by VictorPlumber View Post
Hello all:

Client called me:
Tankless water heater, Moen positemp pressure-balanced tub/shower valve. When water goes thru bottom spout – temperature is hot enough, when diverter switched to go to top shower head – water coming from shower head is luke warm.

Everywhere else temperature is ok. One shower/tub in a house.

I think hot water pressure is less than cold and cold water overpowers hot water in pressurised shower riser.

What if I take out pressure-balancing spool from 1222 cartridge – would it work without spool? Is it possible to do?
Client doesn’t have small children so scalding is ok.

How would you fix it so it would be possible to take hot shower ?

Would appreciate any ideas.
Thanks.

I would remove the shower head and see if there is still a temperature issue. If so replace then shower head with a higher flow model or remove the flow restrictor.

If the issue continues(with the shower head removed) then I would replace the balancing spool/cartridge.
VictorPlumber and MASTRPLUMB like this.
Fatpat is offline   Reply With Quote
The Following User Says Thank You to Fatpat For This Useful Post:
VictorPlumber (06-18-2019)
Old 06-18-2019, 12:47 AM   #3
Senior Member
 
Logtec's Avatar
 
Join Date: Jun 2018
Location: Toronto Ontario
Posts: 400

View Logtec's Photo Album My Photos
Default

Replace the cartridge/spool.
While you have the C/S out, flush out the lines.
VictorPlumber and MASTRPLUMB like this.
Logtec is offline   Reply With Quote
The Following 2 Users Say Thank You to Logtec For This Useful Post:
Tommy plumber (06-18-2019), VictorPlumber (06-18-2019)
Reply

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



All times are GMT -4. The time now is 03:24 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | ElectricianTalk.com | HVACSite.com | PaintTalk.com | RoofingTalk.com