Reliance Worldwide Corporation
(UK) Ltd.
Reliance Worldwide Corporation (UK) Ltd are part of the
Australian based group of companies collectively known as
Reliance Worldwide Corporation, with the UK brand known
as Reliance Water Controls.
Reliance Worldwide Corporation (UK) Ltd is a specialist
in the design, distribution and technical support for
temperature and flow controls.
With group offices and manufacturing plants throughout
the world RWC offers a wealth of knowledge and expertise
which is reflected throughout our products. Being part of
many specialised trade associations and having our own
UKAS accredited laboratory, makes us at the forefront of
any new regulations or changes which impact the industry,
and allows for continuous product development and
innovation, within our specialised product area.
General Function
The 315i pressure reducing valve is predominantly used
in commercial installations for protection against excess
supply pressure. The pressure reducing valve will protect
water systems from fluctuating mains supplies, which can
potentially cause damage to any plumbing system. The
valves are 'drop tight' therefore they will not allow the
pressure to increase (creep) under no flow conditions.
Installation
Please ensure you do not put the valve under any undue
stress in the pipe work.
Install the 315i pressure reducing valve into your pipe work,
it can be installed in any orientation as long as the flow is
in the correct direction, this is indicated by the arrow on the
base of the valve.
The minimum pipe length downstream of the PRV, before
any elbow is fitted must be no less than 5 times the pipe
work size. Eg. DN25 would equal 5" distance. This is to
protect against noise and to ensure a laminar flow.
Maintenance
To service the integral strainer:
1. Isolate the water
upstream and
downstream of the
pressure reducing
valve
2. Use a spanner
on the base of
the cartridge
to unscrew it.
Once loose, you
can remove the
cartridge from the brass body.
3. The strainer can be found at the base of the cartridge,
it can easily be removed by sliding it off the end of the
cartridge
4. Rinse the strainer
under clean
running water, until
any debris has
been washed away
5. Replace the
strainer onto the
end of the cartridge
6. Re-insert the
pressure reducing
valve cartridge into
the brass body
7. Using a spanner, screw the cartridge back into the
valve body.
Commissioning
Please Note: The valve
should only be adjusted when
under no flow conditions.
To adjust and set the
pressure on the valve:
1. Loosen the securing
screw on top of the pressure
reducing valve cartridge
2. Twist the cap anti-
clockwise to decrease
the pressure down to it's
minimum setting
3. Open a tap downstream
of the pressure reducing
valve to relieve the excess
pressure for a couple of
seconds.
4. Twist the cap clockwise
to increase the pressure to
the desired setting
5. The pressure indicator
on the side of the cartridge
will show the set pressure,
but alternatively you may fit
a ¼" pressure gauge to the
test ports on the base of
the valve.
6. Re-tighten the securing
screw on the top of the
cartridge.
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