Overflow Siphons
Standard Overflow Siphons
Basic Overflow
Giant Overflow Siphons
Overflow Siphon Duo
Overflow Siphon Mono
Overflow Siphon Uno
Overflow Siphon Uno for Concrete Tanks
Basic Overflow
3P Overflow Siphons – Adequate overflow is essential for optimum tank water quality.
Inadequate overflow is the primary cause of odour in failed rainwater systems.
The Basic Overflow steel Siphon is available with or without Rodent barrier.
Art-no. 4000210 without rodent barrier
Art-no. 4000310 comes with stainless steel spring rodent barrier
Rodent barriers are also available separately.
Connection Size DN100 (110mm OD)
Giant Overflow Siphons
Giant Overflow Siphons are available in 3 different sizes – DN150, DN200 and DN250.
Giant Overflow Siphon with odour trap and optional rodent barrier.
Regular overflowing of rainwater is essential as it prevents the formation of dirt particles which reduce oxygen diffusion at the water surface. This keeps the water fresh by stopping any anaerobic decomposition from taking place.
Also available with high-grade stainless steel rodent barrier.
Ideal for use in large-scale installations.
The 3P Giant Overflow Siphon’s outlet fits any DN150, 200 & 250 pipe.
The overflow siphon must be securely attached to the tank, since it has a substantial weight when filled. The Giant Overflow Siphon has several connection points in order to fasten it inside the tank. A high-temperature resistant (HT) DN 50 pipe can be attached to the bracing point to act as a supporting bracket.
Tanks fitted with 3P Overflow Siphons and 3P Calmed Inlets become eligible for the ECA scheme.
Overflow Siphon Duo
Overflow siphon with dual skimming inlets, designed to skim surface water, removing debris, oils and other floating contaminants to increase water quality.
For installation inside the rainwater tank on the tanks outlet.
Also has a 110mm inlet for connection to the waste outlet of the in-tank rainwater filter, reducing the amount of pipework exiting the tank.
Connection Size DN100 (110mm OD)
Overflow Siphon Mono
Overflow siphon with skimming inlet, designed to skim surface water, removing debris, oils and other floating contaminants to increase water quality.
For installation inside the rainwater tank on the tanks outlet.
Connection Size DN100 (110mm OD)
Overflow Siphon Uno
Overflow siphon with skimming inlet, designed to skim surface water, removing debris, oils and other floating contaminants to increase water quality.
For installation inside the rainwater tank on the tanks outlet.
Attaches with a large backnut, making it suitable for both below ground and above ground tanks.
Connection Size DN100 (110mm OD) – to fit a 130mm hole in the tank wall.
Overflow Siphon Uno for Concrete Tanks
Overflow siphon with skimming inlet, designed to skim surface water, removing debris, oils and other floating contaminants to promote optimal water quality.
For installation inside the rainwater tank on the tanks outlet.
Has long shank or spout, for embedding through tank wall, typically using rubber grommets. Suitable for both below ground and above ground tanks.
Connection Size DN100 (110mm OD) – to fit a 130mm hole in the tank wall.
Overflow Siphons with Backflow Prevention
Basic Overflow with Backflow Prevention
Duo Overflow with Backflow Prevention Valve
Uno Overflow with Backflow Prevention Valve
Basic Overflow with Backflow Prevention
Article Number- 4000920
The Basic Overflow Siphon with Backflow Prevention made from steel is ideal for above ground plastic or concrete Tanks. The Basic Overflow with Backflow Prevention will ensure optimum Tank water quality by preventing contamination and eliminating odour. Using integrated Overflow and Backflow components makes this product easy to install, saving time and money.
Dimensions: 750mm x 400mmDuo Overflow with Backflow Prevention Valve
Article Number – 4000940
3P Overflow Siphon Duo with Backflow Prevention is ideal for a large plastic or concrete Tank. The Duo with Backflow Prevention has a 110mm inlet for accepting dirty water that runs through to an outlet, this feature saves drilling another hole in the Tank.The Overflow Siphon is supported by the wall of the Tank, when the water level is low.
The integrated Backflow Prevention prevents contamination from occurring with overflow. Using an integrated Overflow and Backflow Prevention Valve will saves having to assemble two components together which will save time and money.
Dimensions: 850mm x 480mmUno Overflow with Backflow Prevention Valve
Article Number – 4000930
3P Overflow Siphon Uno with Backflow Prevention is ideal for installation in small plastic and concrete Tanks. Using an integrated Overflow and Backflow Prevention Valve saves having to assemble two components together which will save time and money. The Overflow Siphon Uno with Backflow Prevention is available with 110mm plain ends connection or 110mm with socket end connection.
Dimensions: 850 mm x 260 mm