Clayton-Power-Plant-Presentation

BACK PRESSURE REGULATING VALVE

When steam loads fluctuate rapidly or when a sudden high steam demand occurs on any steam system, instability due to low steam pressure can be the result. The Clayton Back Pressure Regulator is designed to prevent this by ensuring that the pressure in the steam generator does not fall below a preset limit.

The Clayton Back Pressure Regulating Valve is a self-operated steam pressure regulator which is mounted in the steam outlet line from the Clayton Steam Generator. The valve taps it’s actuating energy directly from the steam itself and ensures that a minimum upstream pressure is maintained. If the upstream pressure falls below the set point the valve will starts to close until the minimum desired pressure is achieved. The Clayton Back Pressure Regulating Valve is extremely reliable and versatile. ADVANTAGES A sudden drop in steam pressure is undesirable for several reason. In particular it can produce ‘flash steam’ and water carryover. However by controlling the minimum pressure, the steam generator system is maintained in a balanced condition at all times. An added benefit of using the regulator is that it allows faster heat up after initial start and faster recovery following a period of overload. By providing stable operation of the steam system the Clayton Back Pressure Regulating Valve also gives additional protection to the helical water coil. AUTOMATIC START The Clayton Back Pressure Regulator is indispensable where the steam generator

Back Pressure Regulating Valve

(models may vary from the one shown)

is started automatically by means of a timer or by a manual switch. During automatic start-up the regulator will gradually open and allow steam into the main only when the pressure is at the correct set point. This avoids the need for operator intervention to manually open valves at the correct time. MULTIPLE STEAM GENERATORS On multiple steam generator installations the Clayton Back Pressure Regulator will provide stable operation on start-up and during operation and will maintain the system in balance. On multiple installations separate regulators are required on each steam generator.

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