| Description | Unit |
| Face to face dimensions | Refer to valve dimensions and schematics |
| Body design | Angle pattern |
| Design Specification | ASME B16.34 |
| Size | 80NB | 100 NB | ||
| Working pressure (max) | 150 bar | 150 bar | ||
| Flow rate (max) | 22 ℓ/sec | 40 ℓ/sec |
To divert the flow of backfill material from one point of placement to another. Furthermore, to ensure that the placed backfill material is not diluted or washed away by the flush water, the valve can be switched to divert flushing water away from the placement point at the end of a backfill placement cycle.
| Description | Unit |
| Face to face dimensions | Refer to valve dimensions and schematics |
| Body design | Angle pattern |
| Design Specification | ASME B16.34 |
| Size | 80NB | 100 NB | ||
| Working pressure (max) | 150 bar | 150 bar | ||
| Flow rate (max) | 22 ℓ/sec | 40 ℓ/sec |

Pressure Ratio Valves accurately maintain a set ratio between upstream and downstream pressures. Pressure Regulating Valves accurately maintain a constant preset downstream pressure, regardless of changing upstream pressures or flow rates, with controlled response designed to ensure stability and minimal line surging when the downstream flow changes rapidly.

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.

To achieve rapid closure followed by slow shut off on turbine nozzle pipelines. This minimizes pressure surges (i.e. water hammer) and prevents pelton wheel turbines from over speeding in the event of electrical load loss.
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