| Description | Unit |
| Face to face dimensions | Refer to valve dimensions and schematics |
| Body design | In-line |
| Pressure rating | 250 bar (max) working pressure |
| Design specifications | ASME B16.34 |
| Valve Configuration | Globe Type – taper poppet & seat |
Surge Anticipation Valve System
The Surge Anticipation Valve (SAV) is designed to prevent pressure surges above the steady state pumping pressure in the event of a pump trip out, entirely by mechanical means, thus eliminating the need for electrical systems that require a battery UPS back-up.
View this product in action in HPE World
- Soft ‘catch’ action of the valve system minimizes pressure surges due to fluid velocity changes
- Simple mechanical design eliminates the need for instrumentation and back-up electrical power supplies
- The SAV incorporates an isolation valve that allows maintenance of the SRVs without draining the column
- The SAV operation can be tested with no risk of generating pressure surges by simulating a column pressure drop when the pumps are not operating. This allows the opening and closing times and pilot pressure to be set and checked. The SAV will open when the pilot set pressure is reached, the SRVs will dump water and then the SAV will close. This can be done regularly as part of planned maintenance
- Stainless steel and bronze internals
- Cast steel body (galvanised body optional)
- High sealing integrity and dirt tolerance
- Flanges and face dimensions to customer specifications
SIMULATIONS
Simulation of system after a trip – A
The graph above shows how a 34 bar pressure surge, caused by a pump/motor trip out, is reduced. This was conducted with three different charge pressures in the Surge Relief Valve nitrogen chamber. The lowest gas charge pressure (100 bar) produces the lowest peak pressure.
Simulation of system after a trip – B
Simulation of system after a trip – C
