3/4" Zone Sentry Valve  Normally Closed (Threaded) Zoom

3/4" Zone Sentry Valve Normally Closed (Threaded)

SKU:Z075T2-1

Brand: Taco

Taco
Z075T2-1 has been discontinued.
Direct Replacement:
SKU: Z075T2-2
Brand: Taco
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Resources

Specs

Size: 3/4"
Connection Type: Threaded
Application: Zoning
Voltage:
?
24v
Hertz: 60
Amperage:
?
0.48
Max Operating Pressure: 300 psi
Fluid Temperature Range: 20°F to 220°F
Position: Normally Closed

Description for Taco Z075T2-1

Taco Zone Sentry Zone Valves provide on-off, normally open or normally closed control in both open and closed hot or chilled water systems. The valves can be used in a wide variety of heating and cooling applications, primarily designed for use with fan coils, radiators, convectors, air handlers, heat pumps and radiant applications.

The Zone Sentry is the most technologically advanced zone valve ever made. It's also simple to install and operate. The valve can be installed in any direction, in any orientation. Taco then went a step further, allowing the operator to be mounted to the valve body in either direction (see Figure A of the manual in the "Manuals" tab), great for those tight baseboard jobs. Snap-in quick connects on the back of the valve make for a simple, secure and fast wiring hook-up. A green LED light shows full functionality of the valve's operation and thermostat status. Under a no power situation the manual override button located on the top of the valve allows the ball to be rotated up to 90° and is also marked with a slot to indicate the position of the valve.

3/4" Zone Sentry Valve Normally Closed (Threaded)

REVIEW SNAPSHOT®

by PowerReviews
Taco3/4" Zone Sentry Zone Valve Normally Closed (Sweat)
 
4.7

(based on 40 reviews)

Ratings Distribution

  • 5 Stars

     

    (31)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (4)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

97%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Easy install but makes cycling noise

I installed two of these inside an interior 2 x 4 stud wall between the master bedroom and the living room. These replaced two wonderfully silent Dole valves which are no longer available. One...Read complete review

I installed two of these inside an interior 2 x 4 stud wall between the master bedroom and the living room. These replaced two wonderfully silent Dole valves which are no longer available. One was weeping a bit but I replaced both. The two valves both feed off a Tee coming up from the boiler in the basement, one for the master bedroom and one for the living room. The zone valves are compact and easy to install and seem well made. My only complaint is that when they operate they produce the normal muted, whooshing sound followed by a creaking sound as the valve comes to it's fully open or closed position followed by 3 more creaking sounds as it tries 3 more times to make sure the valve has moved fully. Wish the firmware for these valves could be changed to eliminate the extra "tries" at powering the valves. The extra noise wakes us up sometimes. Too bad these can't be relocated in the basement in my installation.

VS

Most Liked Negative Review

 

Cheap Plastic Manual Override

Overall the unit works as it should but the cheap plastic override was a surprise. I pressed in and turned then it twisted off. Obviously I thought the value was turning when in fact...Read complete review

Overall the unit works as it should but the cheap plastic override was a surprise. I pressed in and turned then it twisted off. Obviously I thought the value was turning when in fact it wasn't. The valve is brass why cheap out on small part like this? I'm not sure I'd recommend this brand of zone valve until I've tried others and used this one longer. If it goes past 10 years w/o leaking then I can over look the cheap manual override and bump it to 4 stars since I can take the controller off and turn it with a pliers.

Reviewed by 40 customers

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5.0

Best zone valve available

By Free Heat

from Ravena, NY

Verified Buyer

Comments about 3/4" Zone Sentry Zone Valve Normally Closed (Sweat):

I always use Zone Sentry on new installations and frequently use them to replace old zone valves that are not working.
The flow rate is higher because of the ball valve instead of a flapper.

Frequently I can use just one transformer where formerly there were two.

To keep from breaking the plastic knob that manually changes from open to closed do the following: release the zone valve body from the base, but do not remove it completely. Then turn the body 90 degrees. That will close the zone valve without the danger of breaking the plastic turning knob.

 
4.0

Basically excellent valve

By DanF

from Goldens Bridge, NY

Verified Buyer

Comments about 3/4" Zone Sentry Zone Valve Normally Closed (Sweat):

Replaced a Honeywell zone valve with this unit. This is a much better design, using a ball valve instead of the moveable plastic ball in the Honeywell, BUT the ball is not full port. The actual opening is less than 1/2", though still seems to be less resistance to flow than the Honeywell. Love the LED when the valve is powered up, and the manual control on the top of the valve, which shows where the valve is positioned. Also the way the operator is so easy to remove for service or change-out. Would have given it 5 stars if it was full port.

 
5.0

Great valve

By AppEngineer

from North Aurora, IL

Verified Buyer

Comments about 3/4" Zone Sentry Zone Valve Normally Closed (Sweat):

Just replaced a couple of ancient Eaton Dole Zone valves that I couldn't get replacement heat motors for. I like the ease with which the head can be replaced. The indicator light is a nice feature and the override seems easy enough to turn. So far these are working great.

 
4.0

Easy install but makes cycling noise

By Warm in Vermont

from Vermont

Verified Buyer

Comments about 3/4" Zone Sentry Zone Valve Normally Closed (Sweat):

I installed two of these inside an interior 2 x 4 stud wall between the master bedroom and the living room. These replaced two wonderfully silent Dole valves which are no longer available. One was weeping a bit but I replaced both. The two valves both feed off a Tee coming up from the boiler in the basement, one for the master bedroom and one for the living room. The zone valves are compact and easy to install and seem well made. My only complaint is that when they operate they produce the normal muted, whooshing sound followed by a creaking sound as the valve comes to it's fully open or closed position followed by 3 more creaking sounds as it tries 3 more times to make sure the valve has moved fully. Wish the firmware for these valves could be changed to eliminate the extra "tries" at powering the valves. The extra noise wakes us up sometimes. Too bad these can't be relocated in the basement in my installation.

 
4.0

Great company to buy from.

By highpockets

from Watertown, S.D.

Verified Buyer

Comments about 3/4" Zone Sentry Valve, 3 Way Normally Closed (Threaded):

I have ordered from this company before and they always have great prices, quick shipping and knowledgeable people to talk to. This particular zone valve works great, but there is a manual button on top with a tiny little plastic center shaft that broke 30 seconds after I had it out of the box,,,first time I turned it. That piece should be much heavier, but not the fault of the sellers.

 
3.0

Bypass a little weak

By WyoGrizzly

from Mtn.View Wyoming

Verified Buyer

Comments about 1/2" Zone Sentry Valve (Sweat):

The change from a plug type valve to a ball valve is great. The new latch/ removal system is very good. The only weakness is the plastic bypass.As the valve ages the plastic will probably become more brittle over time.Taco should make the bypass button from metal.

(0 of 1 customers found this review helpful)

 
5.0

Simple, works

By Spike

from RI

Verified Buyer

Comments about 3/4" Zone Sentry Zone Valve Normally Closed (Sweat):

It's a valve.

 
5.0

Excellant service

By Don

from NH

Verified Buyer

Comments about 3/4" Zone Sentry Zone Valve Normally Closed (Sweat):

The in stock selection and prompt shipping is great. My plumber can't believe how quick I can order and receive what he needs and he cannot match the prices locally. Thanks

 
5.0

ZONE VALVES

By JOHN

from MASON CITY IOWA

Verified Buyer

Comments about 3/4" Zone Sentry Valve Normally Closed (Threaded):

THE PERFECT VALVE FOR MY ZONES

 
5.0

Very eazy to get it.

By Lyuda

from Brooklyn, NY

Verified Buyer

Comments about 3/4" Zone Sentry Zone Valve Normally Closed (Sweat):

Quick and professional service. Thanks.

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

13 Questions | 38 Answers
Displaying questions 1-10Previous | Next »
  • 3/4" Zone Sentry Valve Normally Closed (Threaded)

    Q:

    Can this be installed outdoors for irrigation in a foggy area? Will moisture/condensation affect operation?
    Asked on 10/1/2014 by Omar from South San Francisco, CA

    3 answers

    • VERIFIED BUYER

      A:

      I would not install outside. does have a circuit board
      Sent from Windows Mail

      Answered on 10/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      I have not used this valve in a condensing environment, and would not recommend it. It has an electronic circuit board inside which is likely prone to problems with condensate present.

      Answered on 10/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Yes. I'm sure moisture would affect the valve.

      Answered on 10/1/2014 by Anonymous
  • 3/4" Zone Sentry Zone Valve Normally Closed (Sweat)

    Q:

    My new baseboard hydronic heating system has 1/2" Supply and Return lines (increased through the 3/4" Slant Fin Baseboard then reduced). What size Taco Sentry Zone valve should I purchase 1/2" or 3/4"? I was thinking 3/4" to get more flow/pressure.
    Asked on 7/9/2014 by Rick from NYC

    10 answers

    • A:

      The circulator pump dictates flow - All residential hydronic systems run on 12PSI. The only effect the 1/2" has is the amount of gpm that it can carry. What dictates btu/hr? Simply gpm x Delta-T x 500 = Btu/hr delivered.

      Typical residential hydronic systems are designed for a 20 Degree Delta-T, the numnber 500 represents the weight of 1 gallon of water x 60 minutes rounded up. Max flow rate through 1/2" copper is 3gpm

      3 x 20 x 500 = 30,000 Btu/hr

      Does that zone require more then 30,000 btu/hr? The only effect using a 3/4" Zone Valve is the pressure drop across it is less. If the pump is a Taco 007 the difference btwen a 1/2" and 3/4" valve is irrelevant.

      Answered on 12/12/2014 by CMad from New York
    • VERIFIED BUYER

      A:

      Go with the ¾.

      Answered on 7/10/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Hi,
      It doesn't sound like your system designer knows what he is doing. 1/2 inch copper is probably inadequate for heat system distribution. Putting in 3/4 inch zone valve(s) will not make any real difference.
      Good luck!

      Answered on 7/10/2014 by Anonymous
    • VERIFIED BUYER

      A:

      If there is not to much price difference I would go with the 3/4" but I expect the pressure drop on the 1/2" would be very minimal give the low flow rate through each rad.
      Sent from my Android phone using TouchDown (www.nitrodesk.com)

      Answered on 7/9/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Your statement " I was thinking 3/4" to get more flow/pressure." IMO the
      flow/volume and pressure is controlled already by the 1/2" supply and
      return lines. Changing the size of the Taco valve will have little
      impact. I would just match the existing line size (1/2") and avoid the
      additional sweat joints

      Answered on 7/9/2014 by Anonymous
    • VERIFIED BUYER

      A:

      yes do the 3/4 because it is smaller than 3/4 thru the valve
      Sent from Windows Mail

      Answered on 7/9/2014 by Anonymous
    • VERIFIED BUYER

      A:

      1/2" are fine. Your system will be limited by the 1/2" tube so that you
      don't have velocity noise. Up sizing just the valves won't gain ya much.

      Answered on 7/9/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Since the supply and return line is 1/2" there is no advantage to buying
      3/4" valves. Besides the fluid must remain in the finned baseboard unit for
      effective heat transfer so a slow circulation may not be an issue.

      Answered on 7/9/2014 by Anonymous
    • VERIFIED BUYER

      A:

      3/4 will have less pressure drop then the 1/2" will. Cost difference is
      minimal.

      Answered on 7/9/2014 by Anonymous
    • VERIFIED BUYER

      A:

      I am using a 3/4 valve which has a nearly straight through path, so the pressure drop introduced by the valve is minimal. Assuming the construction of the 1/2 valve is similar, it would perform as well as the 3/4 in your application. So you would not likely get more flow with the 3/4 valve.
      Don

      Answered on 7/9/2014 by Anonymous
  • 3/4" Zone Sentry Valve Normally Closed (Threaded)

    Q:

    Can I use this valve to replace a Taco valve model 5101G? Thanks.
    Asked on 6/2/2014 by Jerry from Cary, GA

    1 answer

    • CUSTOMER CARE

      A:

      The 5101G can be used in open systems, while this zone sentry should not. V075C2G2ZA024Q4A1 would be the zone sentry equivalent.

      Answered on 6/3/2014 by SupplyHouse Staff from NY
  • 3/4" Zone Sentry Valve (Threaded)

    Q:

    Is the threaded version of this valve a female NPT or male NPT ?
    Asked on 3/7/2012 by Ken from Mesa, AZ

    11 answers

    • VERIFIED BUYER

      A:

      The valve is female NPT.

      Answered on 3/7/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      It is a female thread. 

      Answered on 3/7/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      It is a female NPT " National Pipe Thread"

      Answered on 3/8/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      Female NPT

      Answered on 3/7/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      female

      Answered on 3/7/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      Sorry I was not on this email last eve, to answer the question the fitting is "female pipe thread".  These valves are wonderful and a major improvement over the old "heat motor" style valves.  They have become the "valve of choice" for all my hydronic and geothermal applications that require a motorized valve.

      Answered on 3/8/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      The valve housing, is "female NPT" it is designed to mate with "male"
      threaded pipe, or other fittings.

      Answered on 3/8/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      female NPT

      Answered on 3/8/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      Female NPT

      Answered on 3/8/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      It's female thread.

      Answered on 3/9/2012 by Another PexSupply Customer
    • VERIFIED BUYER

      A:

      It is female npt.
      .

      Answered on 3/9/2012 by Another PexSupply Customer
  • 3/4" Zone Sentry Valve (Threaded)

    Q:

    Can these valves be configured for either "normally open" or "normally closed"? Or do you need to buy a specific model number to be normally open and a different model number to be normally closed?
    Asked on 1/21/2012 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      You would need to specify at the time of order. This particular zone valve is normally closed.

      Answered on 1/23/2012 by PexSupply Staff from NY
  • 3/4" Zone Sentry Zone Valve Normally Closed (Sweat)

    Q:

    Should I step up a size, need to install cutoff valve on existing 3/4" copper mono loop system and am worried that the opening in the ball valve is only about 3/8"

    Will this restrict the flow too much and if so would it make sense to move up to the 1" or 1 1/4" valve so as not to restrict the flow?

    Thanks
    Asked on 1/17/2012 by Mike

    3 answers

    • A:

      The basic valve on for every pipe size of Zone Sentry is 1/2 inch. You gain nothing by going to a larger pipe size hoping to get more flow. I have used many of these in all sizes. The small sized ball opening does not seem to have any negative affect on water flow or heat capacity. These are the only kind of zone valves I install now.

      The N.O. valves are also very effective in situations where you want to drain a system when there is a loss of power as in a solar draindown system.

      Answered on 8/19/2014 by free heat from Ravena, NY
    • A:

      This valve has one of the highest CV ratings in the market. CV= the amount of 60 degree water in gal/min. flowing through a fully open valve at 1 psi. It is the least resistant to flow than most other zone valves. The flow thru one part of a pipe is the same as the flow thru any other part of the pipe. What happens is the water speed up passing thru the valve. The 3/4" and 1" valve are the same except for the size of the copper pipe that can be soldered to it. You know, the max flow thru 3/4" pipe is about 4 gal/min. (about 3'/sec.). If you need that flow you can always use a bigger pump.

      Answered on 6/16/2012 by Homer from Nevada
    • CUSTOMER CARE

      A:

      The 3/4" valve is equivalent to about 8.4" of pipe when calculating flow, while the 1" valve equals 47.4". Since the bore sizes on these valves are about the same, stepping up a size probably wouldn't be worth it.

      Answered on 2/2/2012 by PexSupply Staff from NY
  • 3/4" Zone Sentry Valve (Threaded)

    Q:

    I am running an open system. Will this valve work for me?
    Asked on 1/10/2012 by Anonymous

    2 answers

    • CUSTOMER CARE

      A:

      This valve is only recommended for closed-loop systems. It will rust in an open system. You may want to take a look at Taco's geothermal zone valves, which are designed for use in open systems.

      Answered on 1/10/2012 by PexSupply Staff from NY
    • A:

      I have one of these setup in a open system, geothermal pump / dump. It has worked flawlessly, positive shut-off between the 60psi well system and 0psi dump.

      Answered on 8/21/2012 by Pete from Vermont
  • 3/4" Zone Sentry Zone Valve Normally Closed (Sweat)

    Q:

    I need to replace the electronic portion of a Taco ESP 075C2 zone control valve. can I buy just this part or do I need to buy the entire valve assembly?
    Asked on 12/6/2011 by Anonymous

    1 answer

    • CUSTOMER CARE

      A:

      The ESP valves are obsolete, having been replaced first by Taco's EBV valves and now by the Zone Sentry. The Zone Sentry head (part ZA024Q4A1) works with both the ESP and EBV valve bodies.

      Answered on 12/6/2011 by PexSupply Staff from NY
  • 3/4" Zone Sentry Zone Valve Normally Closed (Sweat)

    Q:

    What is the capacity (Cv) of this valve?
    Asked on 10/8/2011 by Anonymous

    1 answer

  • 3/4" Zone Sentry Zone Valve Normally Closed (Sweat)

    Q:

    Do these zone heads fit on the older EBV zone valve bodys ?
    Asked on 9/25/2011 by Big E from Adrian Mi

    1 answer

    • CUSTOMER CARE

      A:

      Yes, they do.

      Answered on 9/27/2011 by PexSupply Staff from NY
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