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For domestic water heating applications
optimum performance (±4°F) is achieved when the steam pressure in the heat exchanger shell is 15psi or less. Therefore, if the steam supply pressure is greater than 15psi a pressure reducing valve is used to reduce the steam pressure in the heat exchanger shell to a maximum of 15psi.
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For typical process or general applications with less stringent temperature control requirements
(±8°F) upto 35psi steam pressure in the heat exchanger shell may be utilized. If incoming steam supply pressure is greater than 35psi a pressure reducing valve is used to reduce the steam pressure in the heat exchanger shell to a maximum of 35psi.
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