Bottom blow down valve
Bottom blowdown involves periodically opening valves in the mud drum to allow boiler pressure to force accumulated sludge.
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Blowdown lines will contain bends, check valves and the blowdown valve itself; and these fittings will increase the pressure drop along the blowdown line.
The BBV Bottom Blowdown Valve, is based on the tried and tested Spira-trol™ platform. The BBV is part of our blowdown solutions range, specifically designed .
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Surface and Bottom Blowdown Valves
Description:In all cases, it is important to ensure adequate isolation for maintenance purposes and the prevention of reverse flow. This is particularly important when a boiler is shut down, as the TDS control valve may not be designed to seal against pressure on the downstream side. Good engineering practice will always consider what would happen if the control valve were passing water or steam. At worst, the absence of a non-return valve and isolation valve may endanger personnel working on, or in, the shut down boiler. Section 34 prohibits personnel entering specific boilers unless: