Please note that we are currently in the process of redeveloping our websites. Therefore some information may be old or irrelevant. Please contact us directly with any queries while we continue to enhance your online experience with us

Sewage Defence

Sewage Defence Icon
Flood Angel Logo

Sewage back flow causes untold damage, has long-term consequences and means high clean up expenses.

Prevent contamination from sewage and waste water with passive and automatically deployed solutions.


The Flood Angel 160mm/110mm Non-Return Valve

The Flood Angel 160mm/110mm Non-Return Valve is the UK's only adaptable non-return valve that gives the benefit of passive protection due to the integral self-activating flap powered by the flood water.

Under normal operating conditions the Flood Angel 160mm/110mm Non-Return Valve is fully open allowing solids to flow freely and unrestricted through the valve. In flood conditions when water surges back through the drainage system the gate is automatically deployed by the hydraulic pressure of the water. The gate is sealed against a neoprene gasket and this prevents back flow past the gate.

Inspection and maintenance is made easy with a fully rod-able system and a clear inspection lid. Sewage back flow can cause untold damage resulting in long term consequences and high clean up expenses. This can be prevented using this simple yet effective product.

  • The only product to fit both 160mm & 110mm drainage
  • Flexible collars included for adapting 160mm/110mm drainage
  • Clear inspection cover
  • Fully rod-able
  • Low maintenance
  • Quick to clear in the event of blockage
  • Can be installed in main-drain or branch
  • Normal always-open position allows unrestricted free flow
  • 2 year manufacturer's guarantee
160mm/110mm Non-Return Valve 160mm/110mm Non-Return Valve

The Flood Angel Approved* 50mm Backwater Valve

An anti-flooding device protecting interiors from flooding caused by back flow of sewage. Such risk exists most frequently in sanitary drain systems connected to combined and other sewage systems.

The 50mm backwater valve is an ideal anti-flooding device for protecting interiors from flooding caused by back flow of wastewater in all drainage-related systems such as washing basins, kitchen sinks, shower bases and dish washing machines.

  • The Backwater Valve is a passive flood protection solution
  • Operates fully automatically, no external power supply needed
  • Substitutes an inspection chamber, mounted at sewage system outlet from building
  • Resistant to effects chemicals and to hot waste waters
  • Permits temporary blocking of wastewater flow (for overhaul works)
  • Maintains full flow capacity of the sewage system
  • Easy to operate and to maintain
  • 2 year manufacturer's guarantee

More Product Images

sewage-defence-2 Approved* 50mm Backwater Valve Approved* 50mm Backwater Valve

Approved* 50mm Backwater Valve Approved* 50mm Backwater Valve Approved* 50mm Backwater Valve

The Flood Angel Approved* Toilet Bung

This simple, inflatable device can be used to minimise sewage back flow through the toilet under flood conditions.

Designed as a general purpose pipe stopper, when fitted in a toilet U bend, this product has been proven to reduce the risk of sewage back flow significantly.

The bung is a strong rubber bag, attached to a hose with a Schrader valve on the end and it is supplied with a hand pump.

  • Cost effective back flow protection
  • Easy and quick to deploy
  • 2 year Flood Angel warranty applies

* Manufactured by Horobin

More Product Images

Approved* Toilet Bung
Approved* Toilet Bung

Flood Angel Approved Sumps & Pumps

The pump and sump system sits below the ground floor to pump out water which enters through the ground. The pump removes water at a faster rate than it can enter. If the pump and sump is located in a protected zone the outlet is routed to an unprotected zone.

The benefit to this method of external installation removes excessive upheaval to the property owners and the subsequent costs caused by internal installation, which would otherwise require the joist to be cut out and supported. External installation allows easy access via a manhole cover, removing the need for large access space through an internal trapdoor and the associated disruption.

Approved Sumps & Pumps