Page 147 - Water_Controls_for_Healthcare

Solutions for cistern-less WC flush systems /

DIRECT FLUSH SYSTEMS FOR HEALTHCARE FACILITIES:
7 REASONS TO SAY GOODBYE TO CISTERNS

Not suitable for intensive use, WCs with cisterns were designed Limited and simplified maintenance
for domestic use and are a source of recurring problems in public Designed for domestic use, cisterns have fragile mechanisms.
buildings. Susceptible to scale build-up, they encourage Conversely, direct flush systems are specifically designed for public
the proliferation of bacteria and pose a permanent risk of leaks and commercial places. Perfectly able to withstand intensive use as
when used in public and commercial environments. well as vandalism, they are essential for public washrooms.
DELABIE mechanisms are extremely robust. Subjected to
Hygiene endurance tests, they are able to withstand over 500,000
Connected directly to the water system, direct flush operates operations. The battery lifespan, for battery-operated versions,
without a cistern. Therefore there is no water stagnation which also is 3 to 6 years depending on the frequency of use, i.e. approximately
prevents impurity deposits and bacterial development. Direct flush 350,000 uses.
guarantees total hygiene. Maintenance on DELABIE products is, therefore, infrequent
DELABIE's electronic flush systems for WCs prevent the spread of and is also easy to undertake. Maintenance access is from the front.
germs by hand thanks to their touch-free control. Also equipped
with a hygienic duty flush programme, they renew the water in the Space saving
pipework if not used for long periods to limit bacterial development. Thanks to the absence of a cistern, direct flush allows significant
space saving. DELABIE's frame systems are also very compact,
Available immediately which is a real advantage for buildings seeking to optimise space.
With direct flush there is no need to wait for the cistern to refill
before flushing again. Efficiency
Directly connected to the water system, the flush is always available, Connected directly to the water system, direct flush uses the
even for successive flushes. It is, therefore, particularly suited to system's water pressure to flush the WC pan. As a result, the flush is
intensive use in public places. more powerful and more effective than a cistern flush. Direct flush
guarantees optimal cleanliness.
Water savings: no more waste
DELABIE's direct flush WC valves optimise water consumption. Wide, design-led range
This system reduces the risk of leaks considerably, unlike cisterns At DELABIE, aesthetics play a major role in product development.
which are the largest source of wasted water and which result in The design must be able to adapt to any type of environment, as
significant water bills. well as being both durable and reliable. This is why DELABIE offers
For example, a small leak from a cistern can lead to a loss of 220m³ a wide range of WC valves: electronic, time flow, recessed, cross
of water which equates to a total cost of £675 per year (cost per m for wall and with or without a frame system.
3
cold water: £3.08, source: Thames Water website thameswater.co.uk). Developed specifically for use in public places, and adapted to new
Therefore, direct flush prevents this unnecessary consumption. environmental regulations, the direct flush system provides
Some DELABIE direct flush systems have a 3L/6L dual flush the best balance between quality, durability and price for this type
which can be adjusted to 2L/4L, to meet the requirements of of environment.
environmental labels.
DELABIE has developed an "automatic intelligent flush" programme Environmental labels
which determines the need for a smaller or larger flush volume Aware that new consumption trends linked to eco-responsibility
depending on use. This allows the correct consumption of water issues have a major impact on public places, such as the service
according to need and prevents waste while guaranteeing optimal sector, DELABIE has designed a range of direct flush systems
cleanliness. which allow optimised water consumption and which are also
eligible for the highest levels of ecological accreditation such as
BREEAM, LEED and HQE.
By removing the cistern, the primary source of leaks in WCs,
WCs - FRAMES
direct flush also reduces the waste of cold water. BED PAN CLEANERS

SIZING HORIZONTAL FINAL PIPEWORK
DTU update (August 2013)

Simultaneous use
The DTU (Unified Technical Document) provides the special The DTU recommends the following method for direct flush
calculation method for direct flush valves. valves:
The operating time is very short (a few seconds long) and there is Number of valves Number of valves used
no refill time. installed simultaneously
3 valves 1 valve
So, the calculations for pipe diameters for direct flush systems
are not made in the same way as for cistern flush systems. 4 - 12 valves 2 valves
13 - 24 valves 3 valves
25 - 50 valves 4 valves
> 50 valves 5 valves

WCs / Frame systems 145