Ridart model 55B is a Safety Device in according with Directive 2014/34/EU and harmonized standard EN ISO 13617-2. The valve is designed to prevent siphoning of liquid from an aboveground tank to the suction pipe installed at a lower level. The valve is also provided with a pressure relief valve which opens at around 1,5 bar in case of pressure rising in the pipeline.
Body: brass/aluminium, **PTFE
Poppet material: brass
Gasket: O-ring Viton®, (PTFE on request)
Spring material: stainless steel
Thread: BSP ISO 228-1
1" to 2" F
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