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Valve
Manifolds |
The diagrams shown opposite presents the valve manifold
arrangement of standard pressure sand filters.
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The diagrams show 5 valves, valve E is used for the rinse phase and should
always be included.
- The diagrams show the valve positions during the Run
phase, Back-wash and Rinse Phase.
- Note.. it is very important to insure that the
manifold in properly supported, do not hang the manifold and valves
from the filter flanges.
- The pipe work used should match the flange sizes.
- Filters should be sequentially back-washed one at a
time. If two or more filters are back-washed at the same time, the
waste discharge pipe size must be increased to accommodate the flow of
water, or a buffer tank is used.
- Maximum back-wash water pressure is 0.5 bar,
do not exceed this pressure
- Waste back-wash water pipe work and manifolds
should drop down below the valve manifold.
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