Medium operated isolation and relief valves for compact
design in nuclear power stations
Steam block unit (SVU)
- Combines several functions with one main steam
isolation valve (SIG series), two pilot operated safety valves (GVG
series), and one isolation check valve (CVG series)
- System medium operated quick closing steam isolation valves: SIG
series
- System medium operated isolation check valves: CVG series
Click an image to enlarge
applications
- Suitable for all types of nuclear reactors (PWR, BWR, CANDU,
PHWR, RBMK, LWGR, HTGR)
- High and low pressure live steam pipeline leading to the
turbine
- Main steam isolation valves
- Main steam relief isolation valves
features
- Guaranteed leak tightness due to system operated
principle
- Customised to special operational logic
- Possibility of redundancy of the actuator
- Low or high pressure in-situ test during operation for
preventative maintenance
- Reduced maintenance
- Low power consumption of the actuator
- K1 - 1 E qualified for applications within the containment of
nuclear plants
- Compact design reduces size and weight
- Customised interfaces (upstream and downstream pipes)
design standard
- ASME class 600# - 900# or customised
pressure
- From 70 to 2900 Psi (0.5 to 20 Mpa)
temperature
- High temperature applications to 600 degrees Celcius (1112
degrees Farenheit)
sizes
- 4 to 34 inch (DN 100 to 800)
materials
- Forged carbon steel body - special material on request
