Marine Fire Suppression System >> Parts >> Foam Equipments >> Portable Foam EquipmentsPortable Handy Foam Unit
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| For the Around-the-Pump proportioners variable proportioning is achieved by using a metering valve which allows a range of foam concentrate flow rates to be selected, or the units may be made with a preset flow rate. These proportioners have a check valve in the foam concentrate line. All around the pump proportioners are designed for a pressure of less than 50 kPa at the outlet. As with line proportioners this type of proportioner has restrictions to its use. They must be used in systems where the flow rate is known so that the foam concentrate flow rate can be calculated. Construction Body and fittings: 316 stainless steel Jet: High-density polyethylene |
