THERMOSTATIC VALVES

ANTI-VACUUM VALVE
Anti-Vacuum Valve, a smart passive device designed to prevent negative pressure inside boilers

Anti-vacuum shape memory thermostatic valve
 

Anti-Vacuum Valve, a smart passive device designed to prevent negative pressure inside boilers

The SV thermostatic valves series are able to restore the atmospheric pressure inside of a biphasic closed system in an extremely precise and reliable way. At the same time they also act as air vent valve during the heating phase.

 

The key element of the project is a new intelligent actuator system made of a shape memory alloy. According to the temperature it is subjected to, the system is capable of reacting to the heat without any further energy source. Compared to the traditional systems it does not require any electrical power and can be installed in any position and orientation. The techno-polymer body, designed to withstand high temperatures, grants repeatability and reliability in a cost-effective package.


FEATURES

  • No power supply
  • High accuracy and reliability
  • Simplified installation also for horizontal axis

Technical information

PRODUCT  
FEATURES
Steam/water mix. temperature - valve closed (no leakage) > 99 °C / > 210 F
Steam/water mix. temperature - valve opened (air can flow in) < 95 °C / < 203 F
Boiler pressure - valve closed (no leakage) 0.2 ± 0.1 bar / 2.9 ± 1.4 psi
Max boiler pressure 2.5 bar / 36 psi
Max temperature 140 °C / 284 F
Nominal stroke 2.2 ± 0.2 mm
Wrench size (for installation) 24 mm
Threaded inlet 1/4
Weight 12 g / 0.03 lb
Materials compliant EC 1935/2004 NSF51
GENERAL DIMENSIONS

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