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Chemguard In-Line Balanced Pressure Proportioners (ILBP’s) are used with positive displacement foam concentrate pumps and atmospheric foam concentrate storage tanks to form an in-line balanced pressure proportioning system.
Chemguard In-Line Balanced Pressure Proportioners (ILBP’s) are used with positive displacement foam concentrate pumps and atmospheric foam concentrate storage tanks to form an in-line balanced pressure proportioning system. The Chemguard ILBP is designed to balance the incoming foam concentrate pressure with the incoming water pressure and meter the correct proportion of foam concentrate into the water stream over a wide range of flows and pressures. These units are suitable for use with all types of foam concentrates. The ILBP is a completely self contained device containing all necessary components including the ratio controller, pressure balancing diaphragm valve and duplex pressure gauge. A check valve and manual ball valve are standard on some styles and offered as an optional assembly on other styles.
An ILBP system uses a positive displacement foam concentrate pump to supply foam concentrate to the ILBP. A pressure sustaining (control) valve, located in the return line back to the foam concentrate tank, is set to maintain a regulated pressure to the ILBP which is higher than the pressure of the water supply. The excess foam concentrate not required by the ILPB is returned to the foam concentrate tank through the pressure-sustaining valve. The balancing diaphragm valve senses the foam concentrate pressure and balances it with the water pressure. Balancing is achieved through two sensing lines, one from the water supply, the other from the foam concentrate line. Both lines connect to the balancing valve and a duplex pressure gauge that provides readings for foam concentrate and water pressure. The foam concentrate is then metered through a fixed orifice in the proportioning controller into the water stream.
Following table lists the nominal flow range for each size ILBP unit. Flow rates for other foam concentrates may vary. Please call for specific application.
To ensure correct operation of the ILBP, Chemguard recommends the pressure of the foam concentrate at the inlet to the ILBP be 20 to 30 psi higher than the water pressure at the ILBP proportioning controller.
The following options are available for the ILBP units.
When ordering a Chemguard ILBP please supply the following information:
IN-LINE BALANCED PRESSURE PROPORTIONER DIMENSION TABLE
Note: A Victaulic elbow can be installed in the field on the straight assembly units at the Victaulic coupling.
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