Questions & Answers for: Grundfos replace stem Home

...The middle speed has quit. Wondering if it's just a simple fix, change a capacitor or something, or replace the pump. It still works on high speed. It sounds like you might have had a power surge and ...

...stem counter clockwise (loose) with the pump running. Take care not to touch the power line attach to it. Continue the adjustment until the pump stops, at 40 psi. Then, observe - Pump must stop once ...

that the valve has failed? The part number on the valve is 91122852; is the Grundfos Comfort Series Replacement Valve (595926) the proper replacement valve? Thanks, John Yes, you need to replace it

The replacement, replacement, replacement, valve is stuck open again. can your hot water be set too high

My 6-year-old Grundfos hot water recirculator doesn't seem to be working at all. Explain your problem, its likely time to replace

My Grundfos central heating pump is making all sorts of noises since I drained the system to replace a radiator valve. Any suggestions how to fix? Did you bleed all air from the heating system after ...

Why is my water circulator pump making a loud grinding sound ? Should I replace it, or repair it? Replace probably. Clean impeller with white ...

Why does our Grundfos water pump keep kicking on? Mine did that. Little known that the Grundfos MQ pump has a small pressure tank on the end. If the pressure is low and the air volume is therefore low

Pump turns on and off constantly when in use. It didn't use to so this. Shut power off to pump drain system, if you have a tank with a valve stem on it (like your car tires) you need to check to see ...

...replace the stem and the faucet seat. Your bib washer is worn out and you need to turn it extra to open. You could replace the washer and not the stem, but it would be worth it to replace the stem. ...