Non-Return Valves

Non Return Valves - Retrofit Water & Rodent NRV 150mm / 6 inchNon-return valves allow sewer or surface water materials to freely flow in the direction of the systems mains but block backflow of those materials in the opposite direction in instances,...

Non Return Valves - Retrofit Water & Rodent NRV 110mm/4 inchNon-return valves allow sewer or surface water materials to freely flow in the direction of the systems mains but block backflow of those materials in the opposite direction in instances,...

Non Return Valves - Drain Rat Blocker Single Flap 4" / 100mmThe Mastertrap Single Flap Ratblocker with a 4" / 100mm size is a sturdy tool that can be inserted into your drain to allow rodents to exit safely while preventing them from re-entering due to...

Non Return Valves - Drain Rat Blocker Single Flap 6" / 150mmThe Mastertrap Single Flap Ratblocker with a 6" / 150mm size is a sturdy tool that can be inserted into your drain to allow rodents to exit safely while preventing them from re-entering due to...