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Replacement Operator for MZV Zone Valves w/ end switch

SKU:MZV520-RP

Brand: Honeywell-Sparco

Replacement Operator for MZV Zone Valves w/ end switch
Qty	Price
	$52.75 / each
	$195.00 / box (4 units x $48.75)

In Stock! Ships in 24-48 Hours

73 Available

Specs

Product Specs
Application:	Replacement Part
Voltage: ? Voltage close Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).	24v
Temperature Range (F):	240°F Max
Hertz:	60
Auxiliary Switch:	SPST
	Yes
Accessory For:	MZV Zone Valves
Max PSI: ? Max PSI close Max PSI is the maximum amount of pressure per square inch that can be tolerated.	125 psi
Amperage: ? Amperage close Amperage, or amps, refers to the amount of electricity flowing through the wires.	.25
Time Cycle:	10-20 Seconds Open 3-6 Seconds Close
Position:	Normally Closed
Wiring:	18" Leads
Material:	Bronze

Description for Honeywell-Sparco MZV520-RP

Specifications

Replacement Operator for MZV524E, MZV525E, MZV526E, MZV527E Zone Valves w/ end switch
Replacement Part for MZV Series Zone Valves
Voltage: 24 Vac
Frequency: 60 Hz
Auxiliary End Switch: SPST
Maximum Ambient Temperature (F): 240F

Replacement Operator for MZV Zone Valves w/ end switch

REVIEW SNAPSHOT®

by PowerReviews

Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch

3.8

(based on 11 reviews)

80%

of respondents would recommend this to a friend.

Pros

Cons

Best Uses

- Primary use:
- Personal (9)

Most Liked Positive Review

product works perfectly.

The product works fine and the design of the zone valve really requires this sort of operator in order to default to the open position. That said, it has the fundamental flaws of being prone to breaking off if bumped into, requiring care with design of hydro boards, by installing the heads parallel to the back plane of the board, and it feels "loose" when it operates, leading uninformed clients to try to correct this by tightening down the calibration nut, unintentionally forcing the valve to remain open continuously. This is easily correctable by client education, so I don't hesitate to use this valve.

Most Liked Negative Review

Junk.Cheap plastic case breaks.

The cheap plastic case isn't strong enough for the actuator of the 3/4" valve. The case breaks leaving the valve open all the time. I've replaced it every couple of years....Read complete review

The cheap plastic case isn't strong enough for the actuator of the 3/4" valve. The case breaks leaving the valve open all the time. I've replaced it every couple of years. It would be more often, but I've reinforced the case with loops of wire that hold for a while but the case eventually breaks at the neck anyway. The only reason I still use the part is the expense of cutting out the valve body is so high.

Reviewed by 11 customers

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Displaying reviews 1-10

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11/14/2011

1.0

Junk.Cheap plastic case breaks.

By suprplumber

from Manassas, VA

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

10/29/2011

4.0

these over the wirsbo ones.

By dunck

from illinios

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

/to early to tell but I switching these out over the wirsbo actuator .mine seem to have to be replaced often and when contacting wrisbo they shroughed me off.

4/13/2011

1.0

Too many failures - looking for alternat

By Joe

from West Point, CA

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

I have three of these acctuators in my system. I have replaced each at least three times. The early ones lasted about a year before falling appart. The more recent seem to hold together, but the end switch fails after a year or so. I will try to find an alternative.

3/9/2011

4.0

product works perfectly.

By Randy

from Chapel Hill, NC

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

2/11/2011

4.0

Easy to install

By Steve

from New Mexcio

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

My home heating system uses four of these operators. They are very easy to install, which is a good attribute, since about one a year fails. So for ease of installation I give it 5 stars, but for durability a two star.[...]Now I keep two spares on hand all the time, and it cost me only $55 - $60 and 5 minutes of my time when one fails.

1/26/2011

5.0

...

By usdoc1

from Suwanee GA

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

My zone valve broke a year ago. I ordered a part which was originally replaced for another one which I thought was the right one. Unfortunately this also was a wrong one(my mistake)[...]The unused part was returned and my account was credited[...]We are considering installing radiant floor heating system for a friend.Pex supply will be the first one we will consider.

1/5/2011

4.0

Replacement Operator Honeywell-Sparco

By Tallfrenchman

from WI

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

Easy fix, saved me a service call and $$$

12/30/2010

4.0

Zone valve replacement

By Jeff

from Portland OR

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

On my old zone valve (Sparco) the outer housing (thin sheet metal) came off the base of the valve. When it tried to open the valve it just pushed the housing up instead of pushing the valve down. The replacement seems to be a little stronger, so hopefully Honeywell has corrected this problem.

12/10/2010

5.0

Zone valve replacement head

By John

from Staten island ny

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

Easy to install great price

11/26/2010

5.0

Perfect Product for radiant heating

By RTW Construction

from Bumpass, Virginia

Pros

Cons

Best Uses

Comments about Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch:

Ordered this product to replace one that had been in my system for years. Put the new part on in a mater of seconds.

Displaying reviews 1-10

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Q&A: Ask the Questions, share answers

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1 Question | 4 Answers

Displaying question 1

Honeywell-Sparco Replacement Operator for MZV Zone Valves w/ end switch
Q:
What is an end switch
Asked on 12/31/2010 by Joe
Know the answer? Answer this question
4 answers
- CUSTOMER CARE
  
  A:
  An 'End Switch' is an electric switch mounted on the motor linkage that will stop the motor movement when it reaches limit by opening the electrical circuit to the motor.
  Answered on 1/7/2011 by PexSupply Staff from NY
- VERIFIED BUYER
  
  A:
  There are two varieties of this operator. This one has a switch (end switch) the closes when the valve opens. In my system that is used to tell the controller that it is ok to turn on the pump. This operator has 4 wires, two yellow which power the operator and two red wires which is the end switch. The other version w/o the switch has only two yellow wires.
  Answered on 2/11/2011 by Steve from New Mexcio
- VERIFIED BUYER
  
  A:
  An end switch is a normally open or closed switch that reverses it's normal state when the primary operation of the control is complete. In this case, the motor drive of this device opens the zone valve to allow water to flow, and the end switch closes, completing a control circuit that turns on a pump or pump and boiler to supply water and heat to a zone.
  Answered on 3/9/2011 by Randy from Chapel Hill, NC
- A:
  The end switch sends a signal to the system that the valve has opened.
  Answered on 4/13/2011 by Joe from West Point, CA

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Size:	1/2"
Size:	3/4"
Application:	Replacement Part
Voltage:	24v
Temperature Range (F):	240°F Max
Hertz:	60
Accessory For:	MZV Zone Valves
Max PSI:	125 psi
Amperage:	.25

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Replacement Operator for MZV Zone Valves w/ end switch

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Description for Honeywell-Sparco MZV520-RP

Replacement Operator for MZV Zone Valves w/ end switch

Q&A: Ask the Questions, share answers

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