Rainwater filter for large roof areas including commercial, agricultural and industrial use. The Twin Filter can be installed in chambers underground or directly on the wall kept frost free. Usually installed in standard 1000mm manholes. The filter could also be pre-installed in chambers prior to delivery to site.Due to its two step cleaning system, it has a high level of filtering efficiency, independent of flow rate. Due to the steep inclination of the filter cartridge the dirt is continuously cleaned away into the sewer. The cleaned water is collected in a tank and directed into the storage. The 3p two step filtration system is a tried and tested proven technology.
Connection capacity for roof areas up to 800m². A bypass-installation can be used to connect to a bigger area.
Rainwater inlet: 2 x DN 100/ DN 150 (110mm/160mm OD)
Tank inlet: 2 x DN 100/DN 150 (110mm/160mm OD)
Outlet into sewer: 2 x DN 100/ DN 150 (110mm/160mm OD)
The filter has to be cleaned depending on the contamination 1 – 2 times during the year.
How it Works
1. Incoming rainwater collects in the inlet weir sump, from which it must weir over onto the 2 filter units (overflow principle) 2. Cleaning takes place over the two cascades. Larger dirt particles are washed directly to waste off the primary cascade.
3. Pre filtered water then flows over the secondary filter sieve (mesh size 0.65 mm). Due to the special mesh structure of the sieve, any dirt washes directly into the sewer.
4. The filter water collects in the central sump and passes via both clean water outlets to collection tanks.
5. The dirt that has been filtered out is washed to waste via the two outlets.
Twinfilter Product Code: 1000650
Twinfilter with Brackets: 1000650BR
Rainwater inlet: 2 x DN 100/ DN 150 (110mm/160mm OD)
Tank inlet: 2 x DN 100/ DN 150 (110mm/160mm OD)
Outlet into sewer: 2 x DN 100/ DN 150 (110mm/160mm OD)Height difference between inlet invert and inverts of
a. outlet into the storage: 350 mm
b. outlet into the sewer: 510 mm
Mesh size: 0.65 mm
Weight: 16 kg
Housing and cascade material: Polyethylene
Filter cartridge: Stainless steel 1.4301
Stainless Steel Wall Brackets: 1000655
See the Commercial Rainwater Harvesting twin filter installed here.
W.C. 6.4.20 Dispatch planned as normal. Delays expected.
W.C. 30.3.20 Dispatch planned as normal. All couriers are observing social distancing. All couriers are working under "Christmas Workload" due to increase in online orders - delays expected.
27.3.20 Dispatch planned as normal.
26.3.20 Dispatch planned as normal.
25.3.20 Dispatch planned as normal.
24.3.20 Dispatch planned as normal.
23.3.20 A number of couriers have suspended delivery time guarantees. If your order is urgent please get in touch before ordering.
20.3.20 Dispatch planned as normal.
19.3.20 Royal Mail Special Delivery Guaranteed by 1pm Announcement:
We will no longer guarantee deliveries by 1pm the next working day for items posted from Thursday 19 March 2020 onwards. As a result, we will not consider a claim for delay for items posted using the Special Delivery Guaranteed by 1pm service from that date. In addition we will not during this period offer our Consequential Loss service and we will not accept any related claims.
18.3.20 Dispatch planned as normal.
17.3.20 Due to the current coronavirus situation Royal Mail are no longer asking recipient’s to sign for items delivered on or after Saturday 14 March 2020.
17.3.20 Daily dispatch (Royal Mail, Hermes, FedEx) will continue as normal.
17.3.20 UK stock affected:
211702 - 500l Terracotta water butt
12.3.20 * Due to the Coronovirus Pandemic a number of our suppliers and couriers have provided indications of potential delay of goods and deliveries. Many of the goods we supply are manufactured in the EU where action is being taken to slow the spread of the virus. This may have an impact on your order. Please get in touch to see if a certain product/order is affected. As it stands this should have no impact on UK stock and deliveries.*
We're a Manchester based company and ship to the UK at our standard rates. Please get in touch if you are based the Highlands or a UK island.
We also ship all small items (<2kg) to the EU at standard rates which can be seen at checkout. For larger items or quotes for other destinations please get in touch.
We ship all small items (<2kg) Worldwide.
Stock items will be dispatched on the day of order, if ordered before 1pm.
The majority of items are shipped with Royal Mail with the following target delivery times.
Standard shipping (2nd class) allows basic tracking (dispatch and delivery).
"1st class signed for" provides full tracking.
A loss/replacement can only be pursued in line with the target delivery times of the courier.
Bulky items (and pallet deliveries) are dispatched within 2 working days. We will request a contact number if this has not been provided at checkout.
Some items are made to order (bespoke) and details are given on the listing for dispatch times. If for any reason we anticipate a delay on our normal dispatch time we will contact you to let you know.
Occasionally there are delays. We shall not be liable for any direct or indirect losses, costs, damages or expenses incurred by you or any other person for any delays in delivery.
We are an environment centric business and as such we try to minimise our waste. Our packaging is usually recycled and we make efficient use of packaging to minimise wastage.