Orival OR-02-PE, Operation And Maintenance Manual, Page: 13 / 51

ORIVAL, INC. • 213 S. Van Brunt St. • Englewood, NJ 07631 • (201) 568-3311
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MULTIPLE FILTER INSTALLATIONS:
When multiple filters are installed on a common supply line to form a filtration
system, the high & low connections from the DPS are made to the inlet and outlet
of the system as shown on page 19.
1. If each filter inlet has a tee fitting, replace it with a straight or elbow fitting
provided and reconnect the hydraulic tubing to the 3-way mini-valve.
2. If there is a fitting in the lower port on one face of the manifold, remove this
fitting and replace it with a plug.
3. Using supplied hydraulic tubing, connect the DPS high to the system inlet,
and DPS low to the system outlet.
F. Pressure Gauge & 3-way Mini-Valve
A 3-way mini-valve is provided with each ORIVAL filter to assist in
troubleshooting and commissioning of the filter. Normally installed on either the
manifold (Model OR-02-PE) or on the outlet leg (all other models), the 3-way
valve allows for three independent pressure sources to be individually monitored
with the use of a single pressure gauge. The 3-way valve serves as a selector to
three ports located on alternating sides of the 3-way valve, one for inlet pressure,
one for hydraulic motor chamber pressure and one for outlet pressure. There is
a common port equipped with a 1/4" brass elbow, into which a pressure gauge
should be installed. The range of the gauge should be such that it can read the
maximum inlet pressure the filter will experience. All other connections to the
3-way valve should have been completed as supplied.
Prior to reading the three pressures, it is recommended to identify the three ports
by tracing the tubing. Note that one port will be connected directly to the filter
and will normally serve as the outlet pressure source. This should be verified,
however, in case an alternate installation is experienced.
The procedure for reading the three pressures is as follows:
1. To read inlet pressure:
Rotate knob until the arrow points to the port where tubing from the
inlet leg of the filter is connected.