ORI-10 - 65/225 PSI - 1-3/8" ODS

Product Code	900882
Description	ORI-10 - 65/225 PSI - 1-3/8" ODS
Unit	Each
Notes	The ORI head pressure control valve is an inlet pressure regulating valve and responds to changes in condensing pressure only. The valve designation stands for on Rise of Inlet pressure. As shown in Figure 5, the outlet pressure is exerted on the underside of the bellows and on top of the seat disc. Since the effective area of the bellows is equal to the area of the port, the outlet pressure is cancelled and the inlet pressure acting on the bottom of the seat disc opposes the adjusting spring force. These two forces are the operating forces of the ORI. When the outdoor ambient temperature changes, the ORI opens or closes in response to the change in condensing pressure. An increase in inlet pressure above the valve setting tends to open the valve. If the ambient temperature drops, the condenser capacity is increased and the condensing pressure falls, causing the ORI to modulate toward the closed position. The ORI valve is used in conjunction with the ORD valve. Connections - 1-3/8" ODS Maximum working pressure - 31 bar Pressure range - 65 to 225 psi ( 4.5 to 15.5 bar) ORD valve sold separately.
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Documents	Head pressure control valve bulletin