Bayne Revolution HD 1999-0520, Operation And Parts Manual, Page: 17 / 52

Issued June 2017
Revision No: 001
Printed in U.S.A.
Copyright 2017, Bayne Premium Lift Systems
Diverter Valve Information
13
OPERATION AND INSTALLATION INFORMATION
WI-0026
The Bayne diverter valve establishes priority flow to the lifter circuit “P1” and “P2” ports and bypasses oil to the “OUT” port,
which typically supplies flow to the remainder of the truck’s hydraulic circuit. This bypass occurs only after the lifter circuit
is satisfied. The priority flow is controlled by the flow regulator cartridge (FR1) (and FR2 in dual applications) in
combination with the differential pressure sensing valve (DPS). This allows the valve to maintain constant flow regardless
of changes in load pressure or volume flow rate. Since both the lifter circuit and bypass flow can be utilized in the
operation of the truck regardless of which pressure is greater, a single pump can be used to supply two circuits or
operations.
The lifter circuit flow is regulated and maintained by the flow regulator cartridge (FR1) (and FR2 in dual applications). The
differential pressure sensing valve (DPS), rated for 75 gpm of flow and 3000 psi of pressure, is operated by an internal
spring and dampening orifice (OR) which establishes a pressure drop across the block sufficient to ensure the correct
operation of the flow regulator (FR1). For a dual diverter valve, a second flow regulator cartridge (FR2) is installed in the
“FR2” cavity and a shuttle valve (DSV) is installed in place of the SAE plug in the “DSV” cavity. Once the pressure drop is
established, a precision metered flow is provided to the tipper circuit(s) with additional flow being bypassed to the “OUT”
port.
The operation of the diverter valve does not require the use of a tank line to be run to the “T” port. However, the efficiency
of the block will be significantly increased if a tank line is installed. The logic circuit of the block will manage the flow of oil
returning from the tipper circuit to ensure optimum performance. This is primarily controlled with the sequence valve (PSV)
which is factory set and should not be adjusted. All oil returning from the tipper circuit will normally be regenerated into the
outgoing flow to ensure that the downstream functions are not slowed in any way. When the downstream backpressure
rises to a predetermined pressure, the block will redirect the flow to the “T” port to increase the overall efficiency of the
block and reduce the pressure drop through the block. If the “T” port is connected to a tank line, the oil will be dumped
through the block at a lower pressure. This allows downstream functions to operate at the highest possible pressure when
pressure is being required. If the “T” port is blocked, the oil will be redirected back into the outgoing flow through the check
valve (CV).
A relief circuit for the tipper function is controlled by a relief valve (RV), which is preset to 2300 psi. This can be adjusted to
limit pressure to the tipper(s). This relief valve is more efficient than the relief in the hand valve and will operate with less
noise. It is recommended that it be adjusted to relieve before the hand valve relief. It may also be used to limit the weight
the lifter can dump. This may be beneficial in avoiding damage to cans resulting from overloading. This should be the only
adjustment that the block may require. Any other adjustments should only be made after close consultation with Bayne’s
Engineering Department to ensure proper operation.