Cross-over combinations for safety valves
Type SAVA
- safe exchange of safety valves
- pressure release guaranteed during cross-over action
- 100% safety during continuous operation
DN 25E – 600E / PN 10 – 100
NPS 1E – 24E / Class 150 – 600
Cross-over combinations for safety valves
Type SAVA
- safe exchange of safety valves
- pressure release guaranteed during cross-over action
- 100% safety during continuous operation
DN 25E – 600E / PN 10 – 100
NPS 1E – 24E / Class 150 – 600
Sealing systems
Design characteristics
- full-flow, round bore
- sealing surfaces permanently protected
- reliable and tight for years
- tight during the exchange of safety valves
- safe backflow of blow-off capacity
- a minimal flow (protection of the vessel) is always given
Sealing systems
Design characteristics
- full-flow, round bore
- sealing surfaces permanently protected
- reliable and tight for years
- tight during the exchange of safety valves
- safe backflow of blow-off capacity
- a minimal flow (protection of the vessel) is always given
Variants
Type SAVA-R
Example: with backflow of blow-off capacity, flange connections, gearbox
Type SAVA-F
Example: without backflow of blow-off capacity, with plug stem extension (T-wrench), female resp. male threads
Safe exchange of safety valves during plant operation
Principle of the transflow plug
Position 0°
safety valve I
Cross-over phase
(least cross section Amin is guaranteed)
Position 90°
safety valve II
Least cross section Amin during the cross-over phase!
- full round bore
- minimal turbulence
- good drag coefficient (zeta value)
- minimum opening cross section before safety valve
Type SAVA-F
Cross-over single valve without backflow of blow-off capacity, ventilation to atmosphere
Type SAVA-R
Cross-over combination with backflow of blow-off capacity back to the system
