Advantages of the Rainwater Harvesting System:

Economical: Tanks are sized to meet your requirements. Other tank systems with excessive storage cost more to install and result in more stagnant water have the potential to cause health risks.

Fit for purpose: Systems designed for the quality of water you require. Rodent guards supplied as standard. Patented filter technology optimises water quality.

Increased security of supply: Having a reserve of rainwater available can help you mitigate the negative impacts of mains water supply interruptions. Also, the patented pump systems available from JFC come with automatic switch-over to mains supply which gives you reliable back-up.

Easy to assemble: Due to modular components.

Easy to install: The plastic used is robust yet light-weight, making it easier to manoeuvre into position relative to concrete tanks.

Low visual impact: With the underground installations you have more space available for other productive uses whilst also minimising the visual impact of your rainwater harvesting system.

Tank #1         5400 litres / 1200 gallons
                        Ø2.0m X 2.0m high
Ø6.5ft x 6.5ft high

Tank #2         10000 litres / 2200 gallons
                        Ø2.3m X 3.2m high
Ø7.3ft X 10.5ft high

Why Rainwater Harvesting Makes Sense:

Save drinking water: This is the slogan in times of ever increasing water prices and water supply shortages. Rainwater harvesting systems from GRAF are the solution with which you can reduce your need for mains water supply by up to 50 %. Thanks to up-to-date technology and complete systems, which meet all your need in terms of convenience and reliability.

Reduce water charges: Water charges are set to increase substantially in the coming years. Therefore, it makes sense to utilize the rainwater that falls on your roof as it can substitute up to 50% of the water that you use in your home or business and pay for via the meter. Furthermore, businesses can save on the double because they are currently being charged both for water supply and for waste water produced.

Environmentally friendly: Climate change is leading to more violent and erratic rainfall patterns leading to increased flooding on the one-hand and prolonged droughts on the other. Rainwater harvesting helps to mitigate these effects in the following ways:

Minimising stormwater run-off by storing the water on- site for subsequent use which helps to prevent downstream flooding.

During drought periods, rainwater harvesting helps to ease the pressure on mains water supply meaning more effective use of water resources for all.

Preserves groundwater supplies.

Reduces effort and costs for water treatment and transport.

Counters rising water and waste water costs.

Relieves sewage treatment systems, as some rain is retained for use later after heavy rainfall and peak loads are reduced for the sewer network.

Emerging Planning Regulations: Provision for rainwater harvesting is increasingly being considered as a factor in reviewing planning permission applications, especially in areas that have a high flooding risk and areas that are facing increasing water shortages. As mentioned above rainwater harvesting can help to successfully mitigate both these issues whilst helping you to be successfully granted planning permission in the process.

Water Security of Supply issues: There have been increasing instances where the ability of mains water systems to adequately supply the population it serves has come under significant pressure. As a result, one can no longer assume that mains water by itself is going to be able to cater for one’s water needs. Effective water management planning will require an effective back-up system when mains water is under pressure and rainwater harvesting is the most environmentally friendly back-up system available. Furthermore, rainwater harvesting helps to extend the life of wells and other sources of groundwater supply that would otherwise be expended more quickly, thus preserving quality water supply for future generations.

1. Power-Rain: Wall mounted pump with integrated mains backup control Panel

The Power-Rain is a water management control panel consisting of a self priming suction pump, pump controller and mains inlet connection point. The unit uses water in the tank when available, if the tank is running dry it automatically switches to mains water. The controller switches the pump on and off with demand. The mains water feed is in accordance with EN1717 for backflow prevention.

Specifications:

Flow Rate                              20-100 l/min
Max. Operating Pressure    4 Bar
Max. Total Lift                       8 meters
Maximum Ambient Temp  40°C
Temp of Pumped Liquid     -10 to + 40°C
Protection                              IP55
Self Priming                          Yes
Expansion vessel                50 litres
Minimum Mains FLow Rate 12 L/Min

2. Eco-Rain: Floor mounted pump with independent mains top-up in tank


The Eco-Rain is a water management solution consisting of a self priming suction pump with pressure controller and expansion vessel. The unit always pumps directly from the tank, if the tank is running dry it automatically tops the tank up mains water. The top up level can be adjusted as required. The top up valve is mounted in the tank and incorporates backflow prevention.

Specifications:

Flow Rate                              20-70 l/min
Max. Operating Pressure    5 Bar
Max. Total Lift                       8 meters
Maximum Ambient Temp  40°C
Temp of Pumped Liquid     -10 to + 40°C
Protection                              IP55
Self Priming                          Yes
Expansion vessel                50 litres
Minimum Mains FLow Rate 8 PSI