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DN20 Pipe Interrupter - Backflow prevention device - Fluid Category 5

DC Pipe Interrupters provide Fluid Category 5 backsiphonage protection (vacuum on the supply). DC Pipe Interrupters are intended for open outlet appliactions (e.g. urinal flushing) and must not be used for washing machines, upstream of hose union taps or any appliance that has a control valve or restriction. Negligible restriction should exist downstream - otherwise water would ultimately discharge through the vent holes.
Product Code: DC20FM257
Postcode

Availability: In stock

£67.00

Additional Information

Fluid Category 5 / Booster Pumps - Max. Flow Rate No
Fluid Category 5 / Booster Pumps - Outlet Pressure No
Fluid Category 5 / Booster Pumps - Inlet Size DN20
Fluid Category 5 / Booster Pumps - Outlet Size DN20
Fluid Category 5 / Booster Pumps - Voltage No
Fluid Category 5 / Booster Pumps - Number of Pumps No
Fluid Category 5 / Booster Pumps - Cistern Size No
Fluid Category 5 / Booster Pumps - Powered No

Application

Rinsing effluent containers: screw to outlet of outside tap. A short, unrestricted hose may be fitted.

Downloads & Resources

Specification Clauses

Every Hose Union Tap shall be fitted with a DC Pipe Interrupter, suitable for Fluid Category 5 backsiphonage protection – model DC20FM257 - as manufactured and distributed by Arrow Valves Ltd – Tel 01442 823123 www.arrowvalves.co.uk. The device shall be fitted with a short unrestricted hose (600 mm max) and shall be installed at least 150 mm above the outlet. No valves or restrictions shall be fitted downstream of the device. Allowance should be made for some discharge to occur from the Pipe Interrupter’s vent hole. The installation shall be tested and adjustments made as necessary to avoid discharge from the vent hole.