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Quieter zone valves than Taco Zone Sentry
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jeff4444
Member Posts: 40
I currently have zone sentry Z075P2–2 two way valves installed. My house is very open and quiet. When these valves open or close, the winding noise is loud.
Can any quieter actuators be installed on these bodies or would a new valve be required all together? Are the Taco 571 valves much quieter? Any other suggestions?
Can any quieter actuators be installed on these bodies or would a new valve be required all together? Are the Taco 571 valves much quieter? Any other suggestions?
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Comments
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Thermal actuator type valves will be silent. Any motorized or spring return type ZV will make some noise.
Most all of the newer designed thermal actuators are low current draw type, 250 mA, 3W holding current.
Here is an option. It has a unique Twistop actuator for manual opening and green indicator when open. Various connection types and sizes available.
https://s3.amazonaws.com/s3.supplyhouse.com/product_files/656354 - Product Overview - Caleffi.pdfBob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Thanks Bob. That does look good. It looks like the three-quarter inch 656314 would work well in my case. Any problem with mounting it such that the actuator is horizontal? That would fit in the spaces I have.0
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Any position for mounting. Try to avoid the actuator hanging below, in case of a leak it would run into the electrics. You can run 7 or so of these on a 40Va transformer.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
That should work, thanks, Bob. I think I’ll try one and just make sure it all works out and then do the rest of them.0
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Are you sure you have the newer actuator? They're pretty quiet.
8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab
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It has a date code of June 20 20 it looks like. 06/20.0
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Looks like your picture, too, I should have said.0
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OK, then. You've got the updated actuator.
Among zone valves, Taco's are the loudest of this design.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab0 -
I guess I’m going to try a thermal actuator then and make sure that works OK. The taco works great, it’s just a noise.0
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I have 13 taco zone sentry valves installed in my home, and they are very quiet. I know I might sound biased, but really don't think they are noisy at all. Taco does offer the 571 valve heat motor design which is virtually silent. you can certainly try them. they are very robust, and will las for many quiet years:)Joe Mattiello
N. E. Regional Manger, Commercial Products
Taco Comfort Solutions
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thanks. Every time they open here, in the basement, you hear the winding sound on floor 1. Unfortunately 2 were installed in a bedroom closet and this is the bigger problem. Two zones opening and closing will drive a light sleeper somewhat crazy!
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I am considering the 571 as well, thanks. The install doc says they should only be mounted vertically however which might be a space problem. Existing ones are mounted horizontally and that would be the better replacement plan.0
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It comes down to how much you like a silent home
My 70 year old ears can barely hear that valve closing on my shop bench. Others with better or normal hearing could probably hear it across the room. If the piping touches any framing or sheetrock, that seems to magnify / transmit the noise
Thermal actuators are used on radiant manifolds, sometimes mounted in closets next to a sleeping area, and they are completely quiet.
The Belimo ball type zone valve is very quiet. I just compared both.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
would be really nice if there was a quiet actuator I could install on the existing, and plumbed, taco valves.
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@hot_rod How does Belimo compare to Caleffi soundwise?8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab0 -
I credit Belimo with giving you a lot of data on their components. I also applaud SupplyHouse for adding that tech and submittal info on most of the products they sell.
In this case they show the noise level of that Belimo actuator.
35 dB That is about the level of a persons whisper.
Personally I cannot hear it open a close at all. But I am in the hearing aid years now
I have a decibel ap on my phone, I could record both. I think the Taco Sentry is still a spring return, hence the fast close. When you wind a gear train fast, a 7 sec close, that is where you hear spring return valves.
I thought Taco mentioned slowing down that close off, that would reduce noise I suspect.
https://s3.amazonaws.com/s3.supplyhouse.com/product_files/Belimo-Z2075Q-K-CQKB24-RR-Submittal-Sheet.pdfBob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
The original Taco ESP (Energy Saving Principle) zone valves were noisy, even behind access panels, insulation and closet doors. You could even hear them far away in the mechanical room. It sounded like gears grinding for about 10 seconds. If it's a quiet house, it was very annoying.
The new Zone Sentry's make a much more muted sound than the ESP's; opening and closing. Not a grinding sound; more like a motor. You still hear them, especially in a quiet house.
My wife is always talking to me, but I'm unable to repeat anything she's told me. She had me take an audiology test two weeks ago and it came back normal. I told her I would remember more of what she told me if she only told me about the important things. That went over well.8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour
Two btu per sq ft for degree difference for a slab
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Just to wrap this up, I did install the valves that hot rod recommended. It totally solved my noise problem, they are silent and have been running now for a few years with no problems. Thank you, Bob very much!
https://s3.amazonaws.com/s3.supplyhouse.com/product_files/656354%20-%20Product%20Overview%20-%20Caleffi.pdf3 -
reading through this, maybe in hindsight you could have just got a piece of large, thick foam pipe insulation and slipped it over the valve.
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but then it would be TOO quiet! 😁
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why do you say that? These two valves were in the closet of a bedroom. The house is very quiet at night. These wind up a mechanical gear and it makes a worming noise as it springs closed I guess.
I tried to put Styrofoam board around it, but no good, it is an obnoxious sound.
In fact, I can hear one of these valves that’s in the basement from the second floor of the house.
If noise is going to be an issue, the valves hot rod suggested are silent and I don’t imagine they cost much more than the taco costs.
I don’t remember the exact cost, but I bought them from supply house and I wasn’t shocked at the cost! I soldered them in and problem solved.
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a valve with any type if actuator will have a maximum ambient temperate. If you insulate over an actuator they may may over heat
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream1 -
They may but what is happening with the fluid in the system will have a lot more effect on their temp than if they are insulated or not.
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