We suggest a hierarchical approach to choosing your mains NRVS.

  • Always fit a dual flap NRV if space exists for a new manhole between the existing manhole and the house
  • If there is no space for a manhole but a Duck Bill NRV will fit choose this option next
  • Next choice is a push fit NRV into your existing manhole
  • If all else fails then you will have to resort to a PANSEAL that fits into your WC when needed

REDI-Non Return Valve

FEATURES:

  • Mains sewage backflow prevention valve
  • Dual flaps for added security
  • Fits in-line with sewage pipe in new manhole
  • Automatic operation with manual lock if required

Push-Fit Non-Return Valve

FEATURES:

  • Mains sewage backflow prevention valve
  • Fits into existing manhole
  • DIY solution
  • Single flap valve can be manually locked shut

Duckbill Non-Return Valve

Features:

  • Mains sewage backflow prevention valve
  • Fits in-line with sewage pipe but new manhole not required

Appliance Non-Return Valve

Features:

  • Backflow protection for washing machines and dishwashers
  • Fitted internally (preferable) or externally
  • Must be installed horizontally

They were very professional, followed all our safety rules, avoided areas where meetings were on going, kept me well informed with progress and cleared up thoroughly when finished. They should be congratulated – you have a good team there.

Trish Barclay

They were very professional, followed all our safety rules, avoided areas where meetings were on going, kept me well informed with progress and cleared up thoroughly when finished. They should be congratulated – you have a good team there.

Trish Barclay