1/2" Zone Sentry Valve Normally Closed (Threaded) Zoom

1/2" Zone Sentry Valve Normally Closed (Threaded)

SKU:Z050T2-2

Brand: Taco

Taco
Qty Price
$79.85
/ each
$305.80 / box (4 units x $76.45)
In Stock! Ships in 24-48 Hours
(23 Available)
0

Resources

Specs

Size: 1/2"
Connection Type: Threaded
Voltage:
?
24v
Flow Capacity (Cv): 4.9
Body Pattern: 2-Way
End Switch: Yes
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 Z050T2-2

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.

1/2" Zone Sentry Valve Normally Closed (Threaded)

REVIEW SNAPSHOT®

by PowerReviews
Taco1" Zone Sentry Valve (Sweat)
 
4.5

(based on 13 reviews)

Ratings Distribution

  • 5 Stars

     

    (8)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

92%

of respondents would recommend this to a friend.

Pros

    Cons

      Best Uses

          • Was this a gift?:
          • No (4)

        Most Liked Positive Review

         

        Easy to install and runs great.

        I have an outdoor wood burner boiler system that heats the house. The system runs hot water through a large radiator in my furnace. I needed some extra heat in the basement. I...Read complete review

        I have an outdoor wood burner boiler system that heats the house. The system runs hot water through a large radiator in my furnace. I needed some extra heat in the basement. I ran some pex pipe, installed a baseboard heater, installed the Sentry valve, connected a transformer and thermostat and it works perfectly. Because the wood burner boiler has a circulating pump I did not have to install another pump. I used a door bell chime transformer to run the Sentry Valve. It all works great.

        VS

        Most Liked Negative Review

         

        I will buy something else next time.

        Deceptive marketing. The 1" version of this product does in fact allow 1" pipe connections, however, the valve port is the size of a non-full port ½"...Read complete review

        Deceptive marketing. The 1" version of this product does in fact allow 1" pipe connections, however, the valve port is the size of a non-full port ½" valve. I didn't expect a full-port valve but I did expect at least a typical 1" valve port size. It is really too bad because this is a good valve, easy to use and swap motors but not worth the high price just to reduce my 1" pipe-run down to less than 3/8" because they cheap'd out on a valve casting. I expected more from Taco… so sad. I will install these anyways and I will just have to eat the temperature drop the added restriction will incur but I will not be using these in my next house.

        Reviewed by 13 customers

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        4.0

        Nice Zone Valve

        By DanPro

        from NJ

        Verified Buyer

        Pros

          Cons

            Best Uses

              Comments about 1" Zone Sentry Valve (Sweat):

              Valve worked without any issues. I like the ball valve design. I do wonder why the size of the ball isn't full port. Doesn't seem hard to do.

              • Was this a gift?:
              • No
               
              5.0

              Great Product

              By MRunner121

              from NY, NY

              Verified Buyer

              Pros

                Cons

                  Best Uses

                    Comments about 1" Zone Sentry Valve (Sweat):

                    Works perfectly, easy to install, used to prevent themosiphoning in my case

                    • Was this a gift?:
                    • No
                     
                    5.0

                    Easy install

                    By NathanVt

                    from Jericho, Vt

                    Verified Buyer

                    Pros

                      Cons

                        Best Uses

                          Comments about 1" Zone Sentry Valve (Threaded):

                          Ordered four Zone Sentry valves and one arrived broken, valve stem was bent and the plastic that holds actuator to valve body was broken. Replaced quickly and easily by PexSupply. Installs quickly and the wiring is simple and easy to access, no problems during installation.

                          • Was this a gift?:
                          • No
                           
                          5.0

                          PEXSupply has it all

                          By T-Man

                          from Manchester, NH

                          Verified Buyer

                          Pros

                            Cons

                              Best Uses

                                Comments about 1" Zone Sentry Valve (Threaded):

                                Needed this product fast and PexSupply had it and the price was better than I could find even at some supply houses locally. You can't ask for more. Fair prices, fast shipping, quality products.

                                • Was this a gift?:
                                • No
                                 
                                2.0

                                I will buy something else next time.

                                By Ryles

                                from North Branch, MN

                                Verified Buyer

                                Comments about 1" Zone Sentry Valve (Threaded):

                                Deceptive marketing. The 1" version of this product does in fact allow 1" pipe connections, however, the valve port is the size of a non-full port ½" valve. I didn't expect a full-port valve but I did expect at least a typical 1" valve port size. It is really too bad because this is a good valve, easy to use and swap motors but not worth the high price just to reduce my 1" pipe-run down to less than 3/8" because they cheap'd out on a valve casting. I expected more from Taco… so sad. I will install these anyways and I will just have to eat the temperature drop the added restriction will incur but I will not be using these in my next house.

                                 
                                4.0

                                easy

                                By frankie

                                from chicago

                                Verified Buyer

                                Comments about 1" Zone Sentry Valve (Sweat):

                                easy to use

                                 
                                4.0

                                Probably the Best

                                By NewportGeo

                                from RI

                                Verified Buyer

                                Comments about 1" Zone Sentry Valve (Threaded):

                                This valve is great. However, I wish valves like this were full port.

                                 
                                5.0

                                Great product would buy again

                                By bob

                                from New Haven, CT

                                Verified Buyer

                                Comments about 1" Zone Sentry Valve (Sweat):

                                We use this valve to control glycol on our fermentors in our brewery. They are driven by temperature controlers that montor the highs and lows of the beer we are ageing. The life span of these units are many years. I have tried other manufacters and these are the best.

                                 
                                5.0

                                "Great Zone Valve"

                                By Brent

                                from Nazareth, Pa.

                                Verified Buyer

                                Comments about 1" Zone Sentry Valve (Threaded):

                                I bought (2) Taco 1" Zone sentry valve (threaded) to zone my hot water heating system. I went 1" because it was the size of my current pipes, I used threaded in case I want to relocate the valve or change out my boiler in the future.

                                In addition I ordered a ZVC 403 controller and Honeywell Pro thermostat(s) TH411 to finish out the project.

                                After all said and done I couldn't be more pleased with the product. The zone valve is ruggedly built and the detachable controller is very easy to remove and reinstall during installation. Wiring was a snap with the controller and everything work as it should when it was turned on.

                                I looked at other zone valves but felt this was a really good product and it is.

                                Thanks Brent.

                                 
                                5.0

                                Great Product

                                By AC

                                from New Jersey

                                Verified Buyer

                                Comments about 1" Zone Sentry Valve (Sweat):

                                Used recently on a boiler replacement project. I eliminated the old flo control valves with this. The overide on this ball valve assembly is way easier to move than the old valve

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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.

                                6 Questions | 25 Answers
                                Displaying questions 1-6
                                • 1" Zone Sentry Valve (Sweat)

                                  Q:

                                  Are your taco zone valves both 3/4 inch and 1 inch a full port valve?
                                  Asked on 11/22/2013 by Bill from NewYork

                                  8 answers

                                  • VERIFIED BUYER

                                    A:

                                    I don't remember if they were 100% full but they had very big openings.
                                    Thanasis

                                    Answered on 11/25/2013 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    They are NOT full port valve. The valve necks down the flow.

                                    Answered on 11/22/2013 by Anonymous from Lexington,MA
                                  • VERIFIED BUYER

                                    A:

                                    The simple answer is, no they are not full port valves. However, the
                                    engineers will tell you the pressure drop, or flow rate loss across
                                    the valve is insignificant. I can't confirm or rebut the statistics,
                                    but I've had no problems in this regard.

                                    Answered on 11/22/2013 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    Yes they are.

                                    Answered on 11/22/2013 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    I used the 1" and I do not believe they are full port. I remember noticing that during installation. Working well though...

                                    Answered on 11/22/2013 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    I don't believe any of the ball type zone valves are full flow valves I
                                    think the Spec sheet will give you flow and friction loss data.

                                    Answered on 11/22/2013 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    No, the port is quite a bit smaller than the pipe size. A 1" Zone Sentry ball valve is about 1/2" through the ball; a 3/4" is about 3/8". Taco's spec sheet shows the 3/4" is equivalent in restriction to 8.4 feet of pipe @ 4' per second, and the 1" to 47'.
                                    Tom Wills

                                    Answered on 11/22/2013 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    No they are reduced port .
                                    Sent from my iPhone

                                    Answered on 11/22/2013 by Anonymous
                                • 1" Zone Sentry Valve (Threaded)

                                  Q:

                                  What's the VA of the 1" model? Thanks.
                                  Steve
                                  Asked on 9/18/2012 by Steve from Manitoulin Island

                                  5 answers

                                  • VERIFIED BUYER

                                    A:

                                    Hi,
                                    The ansure is aprox 11.5 VA See below
                                    How to convert VA to Watts and KVA to Kilowatts
                                    Basics
                                    Since watts is volts times amps, what is VA? VA (or volt-amps) is also volts
                                    times amps, the concept however has been extended to AC power. For DC
                                    current
                                    VA = Watts (DC current).
                                    In AC if the volts and amps are in phase (for example a resistive load) then
                                    the equation is also
                                    VA=Watts (resistive load)
                                    where V is the RMS voltage and A the RMS amperage.
                                    In AC the volts and amps are not always in phase (meaning that the peak of
                                    the voltage curve is does not happen at the peak of the current curve). So
                                    in AC, if the volts and amps are not precisely in phase you have to
                                    calculate the watts by multiplying the volts times the amps at each moment
                                    in time and take the average over time. The ratio between the VA (i.e. rms
                                    volts time rms amps) and Watts is called the power factor PF.
                                    VA·PF = Watts (any load, including inductive loads)
                                    In other words, volt-amps x power factor = watts. Similarly, KVA*PF = KW,
                                    Or kilovolt-amps times power factor equals kilowatts.
                                    Product Specifications:
                                    Maximum Operating Pressure: 300 PSI (2,100 kPa)
                                    Maximum Shutoff Pressure: 125 PSI (875 kPa)
                                    Fluid Temperature Range: 20° to 240°F, (-7° to 115°C) @ 135°F (57°C) ambient
                                    Service: Closed systems
                                    Optional open system configuration
                                    Up to 50% Glycol
                                    Ball Rotation Speed: Full Open to Full Close (90° turn), 5 seconds (after
                                    charge time)
                                    Full Close to Full Open (90° turn), 5 seconds (after charge time)
                                    Seat Leakage: Drop-Tight Close-Off
                                    Electrical Rating: 24 VAC, 60 HZ, 0.48 Amps
                                    Do not use more than 12 zone valves per 40VA transformer.
                                    Power Consumption, Charging: 11.4 Watts, 0.48 Amps
                                    Power Consumption, Power On: 1.44 Watts, 0.06 Amps
                                    Heat Anticipator Setting: 0.5 Amps
                                    End Switch Rating: 1 Amp @ 24 VA
                                    Rgds,
                                    D2

                                    Answered on 9/18/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    Do you mean as far as power draw goes?
                                    From what I remember it is something like 1/10 of regular valves. It is very low because it uses 10 seconds to charge a capacitor inside.

                                    Answered on 9/18/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    40va 24 volt

                                    Answered on 9/18/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    The VA is 11.5.

                                    Answered on 9/18/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    I don't understand your question. If this is any help I trigger and
                                    operate these valves on 16/5 data wire up to 40 feet.

                                    Answered on 9/18/2012 by Anonymous
                                • 1/2" Zone Sentry Valve (Threaded)

                                  Q:

                                  What is the Life Expectancy of these valves?
                                  Asked on 5/31/2012 by nobelb from NE PA

                                  7 answers

                                  • VERIFIED BUYER

                                    A:

                                    very reliable valve, last from 8- 10 years+

                                    Answered on 5/31/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    I installed these last year and have not had a problem.  My installer indicated that he had a lot of success with these in the past.

                                    Answered on 6/1/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    The life expectancy seems to be bound by the ability of these valves to turn off after power is turned off. That means the capacitors storage. The previous generation lasted only 2 years. The new generation has 2x bigger capacitors so I expect it will last well more than 6 years. Even then you can just replace the head in 5 minutes.
                                    I am happy with them because they don't leak when they are off.
                                    Thanasis

                                    Answered on 6/1/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    I have had two installed for six months on hot water storage application. I
                                    havent seen any issues with the operation to date. I did have issues with
                                    the manual operation mode. Depsite following directions, when I intially
                                    operated the valve manually (per instructions) prior to wiring up, an
                                    internal plastic linkage failed. When I attempted to manually operate
                                    the other valve it was obvious that the second linkage would have
                                    broken. The root cause was that the ball valve was sticking when shipped,
                                    once I removed the operator and turned the valve stem once, the break away
                                    torque was a lot less for subsequent operations. Taco replaced the
                                    valve, but indicated that in their opinion, it was my fault.

                                    Answered on 6/1/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    the zone sentry valve actuator (green & black) is an improved model. The original (all black) actuators for ESP and EBV models had a high failure rate in the first few years. I have had no problem with the zone sentry model.

                                    Answered on 6/1/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    We have seen no failures with the new design of the actuator, which is called the Zone Sentry and is what is pictured in the posting of your question. We have been getting these actuators to install on the older model valves when needed.
                                    Tom Wills
                                    Solar Consultants, Inc.

                                    Answered on 6/1/2012 by Anonymous
                                  • VERIFIED BUYER

                                    A:

                                    Check out the product review and Q&A for 3/4" Zone Sentry Zone Valve (Sweat)
                                    People have been using them for 4 years with no problems and the PEXSupply staff says life expectancy is 7-12 years.

                                    Answered on 6/1/2012 by Anonymous
                                • 1" Zone Sentry Valve (Threaded)

                                  Q:

                                  What is the maximum flow rate of this valve?
                                  Asked on 1/24/2012 by Anonymous

                                  1 answer

                                  • CUSTOMER CARE

                                    A:

                                    According to the manufacturer, you would not want to exceed 8 GPM through the 1" valve. Velocity noise could result if you do.

                                    Answered on 1/31/2012 by PexSupply Staff from NY
                                • 1" Zone Sentry Valve (Threaded)

                                  Q:

                                  How do operate this valve as normally open?
                                  Asked on 11/5/2011 by Anonymous

                                  2 answers

                                  • CUSTOMER CARE

                                    A:

                                    If you have this valve and want to operate it as normally open, you would need to use a ZB024Q4A1 valve head. Part V100T2A1ZB024Q4A1 is the 1" threaded normally open valve.

                                    Answered on 11/11/2011 by PexSupply Staff from NY
                                  • VERIFIED BUYER

                                    A:

                                    Order normally open controller

                                    Answered on 11/22/2011 by Brent from Nazareth, Pa.
                                • 1" Zone Sentry Valve (Sweat)

                                  Q:

                                  What is the cycle time to open and close this valve?
                                  Asked on 3/22/2011 by Chuck from Sarasota Florida

                                  2 answers

                                  • CUSTOMER CARE

                                    A:

                                    The cycle time for this valve is about 4 seconds.

                                    Answered on 3/22/2011 by PexSupply Staff from NY
                                  • VERIFIED BUYER

                                    A:

                                    20 seconds. In our setup they are not powered all of the time. It takes that long to carge the caps. in them.

                                    Answered on 1/24/2012 by bob from New Haven, CT
                                Displaying questions 1-6

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