The non-return valve is an anti-flooding device that closes automatically when a backflow of the sewer system occurs and allows a return to normal drainage when the backflow ceases.
Codice | Colore | ø mm | Bloccaggio | |||
NRO250A | Rosso RAL 8023 | 250 | ✔ | |||
NRO315A | Rosso RAL 8023 | 315 | ✔ |
? The Idrostop anti-return valve is CE marked in compliance with the UNI EN 13564-1 standard ? Equipped with a special PVC anti-rat blade ? The valve must be installed directly on the drain pipe
? Place the valve inside a well to facilitate inspection and maintenance ? Respect the direction of flow indicated on the cover by installing the socket upstream ? The body of the valve must be flat in the direction perpendicular to the flow and with a slope maximum of 2.5 ? ? The pipes and fittings that can be used are those complying with European standards and it is recommended that the normal outlet dimensions are not smaller than the inlet ones ? Inspection of the device should be carried out at least twice a year via the control screw cap, maintenance for restoring the moving part by disassembling, cleaning and replacing parts should be performed by experienced personnel