Series ST6151/6152
Features:
- Approved by German Technical Inspectorate DIN EN 14597:2005-12 as safety functional device for steam and water in heating systems. (Valid only in combination with ST 6151-5)
- Valve closes on loss of power
- Closes smoothly even at large differential pressures
- Adjustable closing time for ST 6152-1
- Automatic return to normal operation possible
