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PRODUCT
INFORMATION
INTAKE STRAINER
Designed and made in New Zealand, Tru-Design Intake Strainers are the superior composite
strainer solution.
The Scoop Strainer is designed to divert large objects away from water intakes while the vessel is
moving. This helps eliminate problems with seaweed/seagrass, sticks or rubbish being sucked
into engine intakes and blocking or clogging intake filters. The strainer acts as a course first stage
filter that is cleaned by water movement.
The Round Strainer is designed for use in stationary applications where there is a risk of sucking in
unwanted objects.
Tru-Design Intake Strainers eliminate the corrosion and electrical bonding problems associated
with metallic fittings. They can be painted over with anti-foul, and can be faired into the hull
without concerns of corrosion.
MODELS
Part #
90622
90623
90411
90554 Scoop Strainer 1¼” PKG
90410 Scoop Strainer 2”
90555 Scoop Strainer 2” PKG
90244
90556 Round Strainer 1¼” PKG
Description
Scoop Strainer ¾”
Scoop Strainer ¾” PKG
Scoop Strainer 1¼”
Round Strainer 1¼”
Doc: PIS - Intake Strainers 3.1.doc Page 1 of 4
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KEY FEATURES
Feature :
PRODUCT
INFORMATION
Manufactured from a glass reinforced
nylon composite
Compatible with all hull types Can be used on aluminum, steel, wood or FRP hulls.
Immune to corrosion and electrolysis Long life with no concerns over decreased performance
Chemical resistant Impervious to diesel, petrol and antifouling paints.
UV resistant These fittings will not break down with ultraviolet light or
High quality surface finish Will not discolour with green film as similar bronze fittings
Paintable Can be painted with all types of antifouling.
Strong construction Strainer can take bumps and knocks without damage.
High strength and light weight.
due to corrosion.
discolour from the sun.
do.
Antifouling paint stays adhered to the skin fitting,
alleviating the chore of grinding and cleaning back flaked
paint from bronze fittings before applying antifouling.
SPECIFICATIONS
Scoop Strainer ¾” – fits ½” & ¾” Skin Fittings
Scoop Strainer 1¼” – fits 1” & 1¼” Skin Fittings
Scoop Strainer 2” – fits 1½” & 2” Skin Fittings
Round Strainer 1¼” – fits 1¼” or smaller Skin Fittings
FLOW AREA
Size Strainer Area (mm2) Area Ratio
Strainer : Skin Fitting
Scoop Strainer ¾” 430 1.90 : 1
Scoop Strainer 1¼” 1530 1.85 : 1
Scoop Strainer 2” 3200 1.75 : 1
Round Strainer 1¼” 705 1.00 : 1
Doc: PIS - Intake Strainers 3.1.doc Page 2 of 4
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DIMENSIONS
All dimensions in mm.
All dimensions nominal.
PRODUCT
INFORMATION
¾” 1¼” 2”
Doc: PIS - Intake Strainers 3.1.doc Page 3 of 4
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PRODUCT
INFORMATION
INSTALLATION
Intake Strainers are designed to be screwed to the hull. Four mounting holes are located on each
fitting. Tru-Design recommend using self-tapping screws that go half way into the hull thickness
(not right through). Small pilot holes should be drilled then filled with silicone or another suitable
sealant. A bead of silicone can then be put around the lip of the strainer before offering the strainer
up to the hull and installing the 4 self-tapping screws. Use your finger to clean up any sealant that
may have squeezed out from the strainer lip after tightening the screws. Should the strainer ever
need to be removed (in case of a blockage or barnacles), it can be removed by removing the
screws, then running a flexible knife or piece of wire to cut through the silicone and remove the
strainer.
Intake strainers can be painted over with anti-foul, to reduce algae and barnacle growth.
There is no need to electrically bond the strainer to anodes etc as there is no risk of galvanic
corrosion.
Tru-Design recommend the use of a basket strainer or similar for critical applications. A scoop
strainer is excellent as a first stage filter, reducing the likelihood of large objects entering the filter
and causing blockages, but does not provide adequate protection for engines and other critical
systems.
SERVICING
As composite Intake Strainers are immune to corrosion, minimal servicing is required.
Upon hauling out, the exterior of the fitting should be checked for damage, and possibly cleaned
internally.
There is no need to grind back anti-fouling as is common practice with bronze fittings. The anti-
foul will stay bonded to the fitting.
Tru-Design Plastics Ltd. accepts no responsibility for Products which are improperly installed or tampered with. Although the information presented in this product information sheet is believed to be
accurate and reliable, no responsibility for inaccuracies can be assumed by Tru-Design Plastics Ltd. This performance data is typical only and variations due to component manufacturing tolerances
are normal. Tru-Design Plastics Ltd. reserves the right at any time to change performance characteristics or specifications without prior noti ce.
Tru-Design Plastics Ltd, all rights reserved.
Doc: PIS - Intake Strainers 3.1.doc Page 4 of 4
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