Vetus Valve non return in-line (rotatable hose connections should be ordered separately)

Plastic in-line non-return valve, without hose connections
YNRE

The waste water connector line-up consists of a three-way valve, an Y-connector, a non-return valve and the additional hose connectors. 
These hose connectors are fully rotatable and are ordered separately to fit your existing hoses. 
Made entirely out of Delrin®, these products are strong and durable. 
With connectors variations from 19 mm up to 38 mm, it’s plug-and-play on every boat.