Water, Waste and Grey Water Tanks 
BETTER BY DESIGN
Over the past years TEK-TANKS designers and engineers have developed
a tank construction system using high strength, advanced polyethylene
materials that overcomes the persistent corrosion and weight problems
of stainless steel and the mechanical failure of flexible bag
style tanks. Over 40% of our current work is building replacement
tanks for boats previously fitted with mechanically unreliable
flexible bags or stainless and aluminium tanks with electrolysis
problems.
TASTE FREE WATER
The particular specification of polyethylene (food grade quality)
which TEK-TANKS use will not corrode and provides clean, taste
free water for the galley.
COMPUTER AIDED DESIGN
After being computer designed on our CAD system, components for
each tank are cut to exact shape and size. These panels are then
fitted together and welded in place using the latest hot gas extrusion
welding systems.
PRESSURE TESTING FOR RELIABILITY
As part of our commitment to quality and reliability, every TEK-TANK
water tank, (built from 10 - 12 mm Polyethylene), is pressure
tested to 4 p.s.i. ( 8' hydraulic head)
BAFFLES FOR STRENGTH AND SECURITY
TEK-TANKS standard specification includes baffles placed approximate
every 300 mm. On larger tanks these are locked into position by
means of an interlocking pin and ribs situated under the top panel.
This design feature prevents the top of the tank from lifting
when under pressure.
These carefully planned internal baffles also perform two additional
important functions. Firstly, they introduce immense rigidity
to the design of the tank, and secondly, they cleverly limit the
dynamic movement of contents, thus minimising the destructive
pounding forces against the tank body.
INSPECTION HATCHES 
These are high quality proprietary hatches with a large O ring
seal. Where height is a problem then a 10mm thick hatch cover
with a rubber neoprene seal would be used. All hatches can be
supplied as an optional extra. Where cross baffles are adjacent
to an inspection hatch, the baffles have on average eight inch
diameter cut-outs to facilitate cleaning and maintenance.
CUSTOM DESIGN AND PRODUCTION
Water and waste holding tanks built from rigid polyethylene lend
themselves to one-off production because there are no expensive
mould tools to build. Tanks are of all welded construction and
built to the customers own design, but to TEK-TANKS demanding
and proven specifications. Polyethylene cannot be easily curved,
but multifaceted shapes normally solve most design problems. Please
bear in mind when designing your tank that the more complicated
the shape, the more expensive the tank.
TRADE CUSTOMERS
TEK-TANKS offers the custom and production boat builder the ideal
solution to providing tanks for storing potable water and all
grades of waste. We will be pleased to help with any design problems
and offer a fast and efficient service from our workshop in Upper
Froyle near Alton in Hampshire.
