Mark 53/54 Series Differential Back Pressure Regulators
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The Mark 53 maintains a constant differential between the inlet pressure and the pressure loaded on top of the diaphragm. It can be used for both differential and remotely adjusted applications. The Mark 54 provides the same flow capacity as the mark 53 but with less offset in controlled pressure due to larger diaphragm. The valve is normally closed. The inlet pressure acts beneath the diaphragm and is opposed by the force of the adjusting spring plus the pressure of the loading fluid. As the inlet pressure overcomes the set point (the combined force on top of the diaphragm), the valve moves toward the open position, relieving the necessary pressure to maintain the set point. |
