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Pressure |
Regulators |
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| Vacuum
Regulators Mark 55 |
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Air Loaded Back Pressure
Regulators Mark 56 |
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1/2” (DN15) through 2” (DN50) |
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1/2” through 6”(DN15 through DN150) |
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Vacuum Control Ranges: |
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The operation of
the MK56 requires |
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1” Hg to 25” Hg vacuum. |
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no control
spring or pilot. Instead, a |
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They are used to
maintain vacuums |
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static air signal is applied to the top of |
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at predetermined
settings and to |
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the diaphragm to
determine the |
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regulate vacuums on
evaporators, |
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setpoint. |
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cookers,grinding
fixtures, milking |
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Max ∆P 325 PCI --
2" DN50 |
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machines, altitude
chambers and |
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Max ∆P 150 PCI --
6" DN50 |
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other vacuum systems. |
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Max ∆P 550 PCI --
1/2" DN50 |
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Externally Piloted Back
Pressure Regulators |
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Cage Trim Back Pressure
Regulators Mark 58 |
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Mark 57 |
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1/4" through 2" (DN8 through DN50) |
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The inlet pressure passes
through the |
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Maximum Inlet Pressure: 300 psi . |
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inlet pilot
tubing beneath the pilot |
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Maximum
Temperatures:350°F with |
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diaphragm. When the setpoint is |
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Viton seats and Viton or SST |
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reached, the
force of the adjusting |
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diaphragm. |
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spring is overcome and the
pilot valve |
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Minimum Temperatures: -20°F
(-29°C) |
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opens. |
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with Buna-N seats and diaphragm |
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1/2” (DN15) through 6” (DN150) |
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ANSI Flanges — 150#, 300# |
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Max ∆P 325 PCI --
6" DN50 |
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DIN Flanges — PN10/16, PN25/40 |
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