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1" MVA Zone Valve, four-wire
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MANUALS (1)
Product Highlights
Description
Specs
| Type: | Zone Valve Motorized |
|---|---|
| Application: | Zoning |
| Size: | 1" |
| Connection Type: | Sweat |
| Max Ambient Temp (°F): | 104°F at 239°F water temp |
| Flow Capacity (Cv): | 7 |
| Max Water Temp (°F): | 239°F |
| Voltage: | 24V |
| Max Pressure (PSI): | 125 |
| End Switch: | Yes 24 VAC 5 amps resistive 3 amps inductive |
| Max Close-Off PSI: | 17.5 psi |
| Body Pattern: | 2-Way |
| Material: | Bronze |
| Operating Voltage: | 24 VAC Nominal |
| Operating Current: | 250 mA |
| Time to Close: | 3 to 4 seconds |
| Motor: | Synchronous motor |
| Time to Open: | 10 to 12 seconds |
| Wiring: | 12" Leadwires Four-Wire |
| Position: | Normally Closed |
| Weight (lbs): | 2.4 lbs |
Questions?
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Product Q&A
3 QuestionsQ: Can I buy a replacement head?
Asked by DRC 12 years ago
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Verified Reply- Supplyhouse Staffthese are the new heads, the older style has been discontinued. http://www.supplyhouse.com/Wirsbo-Uponor-A3010522-Thermal-Actuator-Four-Wire-2059000-p
Q: Is this valve normally closed only or can it be switched to normally open? Is this valve for closed loop systems only?
Asked by Karl 14 years ago
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Verified Reply- PexSupply StaffThe MVA is normally closed only. The valve can be used in a closed or open loop system.
It opens the manifold seat with a 24 volt signal with a spring closed return when power is taken away. So power only opens it, power can't close it. The end switch has "dry" normally open/closed terminals. It is wired for normally open. You have to do some soldering if you want to change it. You can use it for closed or open systems. Note: These valves have problems with the end switches malfunctioning over time.
Normally closed. I think it should work with any system. Stephenne
No it can not be switched... It is what it is. Sent from my iPhone
Sorry second question... It is a valve, as far as I know it does not care if the loop is closed or open... It's going to open or close with out being influenced by the design of the system. As long as you have a 24volt control circuit. Sent from my iPhone
Q: how to wire this zone valve? what if it's mounted upside down?
Asked by gedas 16 years ago
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Verified Reply- PexSupply StaffThe wiring diagram for this Zone Valve can be viewed at the link below on page 2: http://s3.pexsupply.com/manuals/1286896758141/40421_PROD_FILE.pdf This unit can not be mounted upside down.