Enduramaxx Fluid Category 5 AB Air Gap Break Tank
Enduramaxx 500 Litre Fluid CAT5 Type AB Air Gap Break Tank – 17160501CAT5
- Established 1975
- Trusted by thousands of customers
Enduramaxx 500 litre upright baffled Fluid Category 5 Type AB air gap break tank
Break tank in WRAS approved polymer fitted with a screened overflow and weir giving a Type AB air gap, for Fluid Category 5 backflow protection between the mains and a pumped system.
500 litres, 1100 mm long x 720 mm wide x 1700 mm high, 1.5″ outlet as standard, 455 mm (non vented) lid.
More about this product
Applications
- Booster set and pump break tanks
- Fluid Category 5 backflow protection
- Commercial and industrial water systems
- Wash-down and process water feeds
Specification
| Capacity | 500 litres |
|---|---|
| Part number | 17160501CAT5 |
| Dimensions | 1100 mm long x 720 mm wide x 1700 mm high |
| Outlet | 1.5″ as standard (other options available) |
| Lid | 455 mm (non vented) |
| Material | WRAS approved polymer |
| Backflow | Screened overflow and weir, Type AB air gap (Fluid Category 5) |
| Manufactured | UK |
| Guarantee | 10 years |
Key features
Frequently asked questions
Enduramaxx’s 500 Litre Fluid CAT5 Type AB Air Gap Break Tank is 1200 L x 500 W x 1450 H H mm and constructed from the MDPE polyethene which is UV stabilised. This tank is a one piece, seamless, rotationally moulded tank which guarantees strength, impacts resistance, durability and many years of use. This arrangement of fittings for compliance with the Water Supply (Water Fittings) Regulations 1999 in England and Wales and the technically identical Scottish Water Byelaws 2004.
Enduramaxx’s 500 litre Fluid Category 5 Break Tank is fitted with a Type AB-Air gap weir overflow for complying with the Water Supply (Water Fittings) Regulations 1999. The weir overflow (Fluid 5) which is non-mechanical backflow prevention for inlets up to 32mm. Many water authorities demand that water storage tanks connected to the mains water supply have suitable measures to protect the mains from contamination. The AB Airgap is designed to prevent the inlet to become submerged and stop the water within the tank contaminating the mains water supply should there be a backflow 400 drop in the mains.
These 500 litre break tank is fitted with a cowled screened overflow to prevent the ingress of light into the tank and a stainless steel mesh to prevent the debris getting into the tank. Larger weirs can be specially made for larger inlets. This break tank meets the requirements of WRAS Fluid Category 5 Break Tanks, also known as a Fluid Cat 5 break tank, Fluid Cat 5 tank and Fluid Cat 5 booster set tanks.
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
Frequently Asked Questions
Quick answers to common questions about the Enduramaxx 500 Litre Fluid CAT5 Type AB Air Gap Break Tank – 17160501CAT5. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What are water storage tanks used for?
Water tanks store water for applications including domestic supply, rainwater harvesting, commercial systems and specialist installations.
How do I choose the right water tank capacity?
Consider daily demand, available refill rate, required reserve, installation space and the intended use of the stored water.
Can every water tank be used for drinking water?
No. Drinking-water applications require a tank and fittings suitable for potable water; check the product’s approvals and material specification.

