Head Pressure Control Valves 7/8s ODF, US $33.99 – Picture 0

Head Pressure Control Valves 7/8s ODF, US $33.99 – Picture 1

Head Pressure Control Valves 7/8s ODF, US $33.99 – Picture 2

Head Pressure Control Valves 7/8s ODF, US $33.99 – Picture 3

Head Pressure Control Valves 7/8s Odf

US $33.99

Sussex, New Jersey, United States
Jun 9th

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INSTALLATION INSTRUCTIONS To ensure proper performance, head pressure control valves must be selected and applied correctly. This is covered thoroughly in Bulletin 90-30. However, proper installation procedures are equally important. VALVE LOCATION/PIPING a— The OROA, ORI and ORD valves can be installed in horizontal or vertical lines – whichever best suits the application, and permits easy accessibility of all valves. Consideration should be given to locating these valves so they do not act as an oil trap and so solder cannot run into the internal parts during brazing. Precautions should also be taken to install the valves with the flow in the proper direction. The ORI valve CANNOT be installed in the discharge line for any reason. Figures 1 and 2 are piping schematics only to illustrate the general location of the OROA, ORI, and ORD valves in the system. Sporlan recommends that recognized piping references be consulted for assistance in piping procedures. Sporlan is not responsible for system design, or for misapplication of its products. If these valves are applied in any manner other than described in this bulletin, the Sporlan warranty is void. In most cases, the valves are located at the condensing unit. When the condenser is remote from the compressor, the usual location is near the compressor. In all cases, it is important that some precautions be taken in mounting the valves. It is suggested that they be adequately supported to prevent excessive stress on the connections. Discharge lines are a possible source of vibrations and gas pulsations, which may result in fatigue in tubing, fittings, and connections. The severity of discharge gas pulses differs with each system. On some applications it may be necessary to dampen the pulses to protect the ORD-4 internal parts. Pulsations are best handled by a good muffler placed as close to the compressor as possible. Vibrations from moving parts of the compressor are best isolated by flexible loops or coils (discharge lines 1/2" or smaller), or flexible metal hoses for larger lines. For best results, the hoses should be installed as close to the compressor shut-off valves as possible, and mounted horizontal and parallel to the crankshaft or vertically upward. The hoses should never be mounted horizontal and 90° from the crankshaft. A rigid brace should be placed on the outlet end of the hose to prevent vibrations beyond the hose. The inlet connections on the OROA-5, ORI-6 and ORI-10 valves should be sized the same as the outlet of the condenser where possible. The ORD-4 is available with 5/8" ODF and 7/8" ODF solder connections. Reducing couplings or bushings may be used to install the ORD-4 in systems with discharge and bypass lines smaller than 5/8" ODF. Sporlan Head Pressure Control Valves may be applied in parallel to provide higher refrigerant flow for large systems with requirements greater than any single valve’s capacity. CAUTION: When the head pressure control valves are factory installed and capped for future hook-up in the field, any holding charge in the condensing unit and valve assembly should be bled off from all sides of the valves before removing the caps. This will prevent the caps from blowing off due to any trapped refrigerant. VALVE STRAINERS – Catch-All ® filter-driers – See·All ® moisture and liquid indicator — Just as with any refrigerant flow control device, the need for an inlet strainer is a function of system cleanliness and proper installation procedures. When the strainer is used with the ORI, the tubing is inserted in the valve connection until the tubing and strainer flange ring are up against the tubing stop, thus locking the strainer in place. See Figure 3. In order for the strainer to seat properly against the tubing stop of the OROA condenser connection, the strainer is inserted into the tubing. The tubing is then inserted into the valve connection, thus locking the strainer in place. See Figure 4.