Zone valves

natedean

Can I use Honeywell zone valves with taco controller

ScottSecor

Yes, it's done all the time. However, we prefer Taco and Caleffi zone valves.

SteveSan

They are compatible with our ZVC control. If you need any help or have questions please feel free to call into Taco Tech Support 401-942-8000 Mon-Fri 8am-5pm EST.

hot_rod

Caleffi Z one zone valves connected to Caleffi Relay boxes get you 5 year warranty on both😉

natedean

The caleffi zone valves cost a bunch more and a need like 7 .I'm looking for ten zone controller wat is my best option

EBEBRATT-Ed

They all cost $. Taco zone controls with Honeywell or Erie zone valves ar probably the least $$ you can get. Check the different options on Supply House.com

SuperTech

I would strongly recommend staying away from the Honeywell zone valves. Honeywell makes a lot of great products but the zone valves are not one of them. I see nothing but constant problems with them. I replace a couple every week during heating season. Caleffi Z one or Taco Zone Sentry are much better quality. 

HVACNUT

natedean said:

The caleffi zone valves cost a bunch more and a need like 7 .I'm looking for ten zone controller wat is my best option

Or the Caleffi equivalent. 

HomerJSmith

I had a similar situation with 7 zone with 7 circulators, but Taco only has a six zone controller, so I added to the six controller a single Taco controller. That may work with ZVCs. See, HVACNUT.

mattmia2

the cv of the honewell valves is a lot lower than taco zone sentry valves. The taco valves aren't much more than the honeywell and are a lot easier to install and wire.

hot_rod

mattmia2 said:

the cv of the honewell valves is a lot lower than taco zone sentry valves. The taco valves aren't much more than the honeywell and are a lot easier to install and wire.

HW, Erie, Caleffi spring return valves are all 7.5- 8 Cv. Should be plenty of flow size for 3/4 copper

EBEBRATT-Ed

Some of the Honeywell 3/4" valves are only 3.5 Cv

Alan (California Radiant) Forbes

With a Cv of 3.5, flowing 3.5gpm will create the same pressure drop as 220' of ½" PEX at .5 gpm. Most of the systems you and I design will have no problems handling that with a small pump, no? Of course, that pressure drop gets added in to all the other pressure drops along the way: boiler HX, indirect HX, pipe length, number of fittings, etc. What I'm saying is that it's important to pay attention to the limitations of the devices you install, but keep in mind that it might not come into play with the specific system that you are designing.

However, it could save a watt or two if you're using a ΔP circulator.

hot_rod

EBEBRATT-Ed said:

Some of the Honeywell 3/4" valves are only 3.5 Cv

They also come in a 1, 2.4, and 5 Cv, but unless a supplier mis orders them, the 8 Cv is most common. Maybe not many installers know why there are so many options or how to apply them. Good idea to always look at the box or label on the valve.

Alan (California Radiant) Forbes

Bob: How would you use a zone valve with a Cv rating of 1?

mattmia2

You would use all of them to roughly balance the different zones.