Thermostatic Expansion Valve The thermostatic expansion valve has an external equalizer and a fixed
superheat setting. This valve acts as a metering device for the flow of liquid refrigerant into the evaporator to
the suction line and an external equalizer which senses pressure in the suction line at the thermal bulb location
giving an accurately controlled superheat. See Drawing 1156-002.
Superheat is the heating of the refrigerant vapor above its vaporizing temperature.
3.2.10 Water Piping and Connections Do not reduce any pipe sizes from the factory connections on the unit. Both the
water inlet and outlet of the condensing package should be equipped with gate valves. This is needed for shut-
down of water supply during long periods of unit shut-down and/or condenser removal. It is important that both
condensate pan drain connections be piped. This is necessary to compensate for the ships pitch and roll. The
condensate drain line should be pitched downward from the unit to a sump or open drain.