Buffalo Retro fit -Non Return Valve to fit 6 inch (150mm) Sewerage Pipe. Rodent and Water Stop.

I fitted this unit to prevent odours from the sewer entering our bathroom,It works perfectly and the odours have gone.

Brilliant item.Easy to install and stopped drain smell backing up the pipe.

It worked fine. I had bad smell in 2 of my bath rooms when air blows outside the house and finds it way into the drainage pipe network. But since I fitted it in the main drain, it perfectly blocked the air flow and stopped the smell ..Nevertheless, toooo expansive for what it is.

Worked perfectly to stop a rat infestation

Don’t buy this! We did and after 2 weeks the rats had chewed around the plastic edging and managed to get back into our home. We contacted the sellers to ask for a refund and have not even received a response. Disgraceful customer service. We’ve had to buy another one from a different seller (stainless steel) which has done the job. Save your money and the stress by buying a stainless steel one. Rats will get through this and the sellers won’t give you your money back.

Top quality will buy more

Excellent piece of kit, just fits so easily.Just needs oiling when needed.

Easy to fit.up to now all quiet in the loft.