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33
ENGINE ROOM
ENGINE ROOM
Waterlocks & Goosenecks Exhaust Components Marine Exhaust Hose Sound Insulation
630 631 631 632
www.bla.com.au
629
section
ENGINE ROOM
33
Waterlock/Silencer
Waterlock/Silencer
Combination waterlock and muffler manufactured from high density polyethylene to suit engines up to 50 HP. These waterlocks are suitable for wet exhaust systems with hose diameters of 40, 45 or 50mm. Simply trim off the stepped tails to the required size and connect the hose with double exhaust clamps as is normal recommended practice of installation for small craft. Depending on the relative height of the waterline, care must be taken to prevent water back-syphoning into the engine by installing a gooseneck and syphon break.
These European made waterlocks are manufactured from high density polyethylene to a high standard and are suitable for wet exhaust systems having hose diameters ranging from 55mm to 90mm. Simply trim off the stepped tails to the required size to suit the hose diameter of your choice. These waterlocks provide adequate noise suppression for most small to medium propulsion engines and generators. Depending on the relative height of the waterline, care must be taken to prevent water back-siphoning into the engine by installing a gooseneck and syphon break.
a
c
a
b
b
333243
c
a
BLA Code
Hose Dia. a mm mm
b mm
c Capacity HP mm litres Max.
333249
40/45/50 440
230
150
6
c
b
50 333241
Gooseneck A transom fitted gooseneck provides added engine protection from following seas or when going astern by forcing the water to lift up the gooseneck before being able to enter the engine via the exhaust system. This gooseneck is manufactured from high density polyethylene and suits 40, 45 or 50mm exhaust hose diameters with a 50mm outlet. Simply trim the stepped tail to the required size to suit the hose diameter of your choice. b
BLA Code
Hose Dia. a mm mm
b mm
c Capacity HP mm litres Max.
333241 333243
55/60/65 660 75/90 775
320 410
220 290
20 33
115 150
Exhaust Waterlocks Suitable for wet exhausts only. Installed in the exhaust line to prevent water from entering the engine. These waterlocks are made in New Zealand and constructed from durable polyethylene. Inlet side has the option for either top or side entry. Hose tails are stepped to suit multiple diameters.
a
630
BLA Code
Hose Dia. mm
a mm
b mm
333247
40/45/50
480
110
Quality marine equipment
BLA Code 333290 333292
Hose Dia. mm 40/45/50 63/75
O/all O/all Length Height mm mm 480 710
305 420
Width mm 120 135
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33
Exhaust Hose
These blue silicone exhaust couplers provide simple manifold to solid exhaust pipe connection with angular and longitudinal misalignment compensation in wet exhaust systems. They also provide essential vibration absorption. The silicone couplers are stable at elevated temperatures, resistant to exhaust gas, antifreeze and salt water. Temperature range: -28C° to +175°C
The inner tube of this hose is constructed of nitrile black rubber that is exhaust gas, fuel and fire resistant, whilst the outer cover is manufactured from an NBR/ PVC blend which provides good resistance to abrasion, hydrocarbons and fire. It is strengthened by high tensile cords with embedded steel helix wires to avoid kinking on bends or collapsing. This hose is suitable for wet marine exhausts, fuel delivery and hydraulic suction. Its temperature tolerance is -30ºC to +100°C. For sizes up to 90mm ID. 150 7840/A2, 94/25/CE, 2003/44/EC.
BLA Code
BLA Code
Inside Dia. Length mm mm
S16-272-4000 S16-272-5000 S16-272-6000
100 125 150
150 150 200
ENGINE ROOM
Silicone Exhaust Coupler
Internal Dia. Length mm m
136060 333330 333331 333332 136062 333334 333335 333336
38 38 45 45 50 50 63 63
15 per metre 15 per metre 15 per metre 15 per metre
Transom Exhaust Flapper Valves
Exhaust Outlet
Specially compounded weather and UV resistant EPDM rubber flapper valve designed to help prevent water from entering the exhaust system in following seas or when going astern. Secured using 316 stainless steel quick fit hose clamp (supplied).
These highly polished, cast 316 grade stainless steel exhaust outlets include an integral, matt black powder coated stainless steel flapper valve to inhibit water intrusion back into the exhaust system. They also have an ingenious, yet simple collar to keep annoying residual drips away from the hull, thus preventing staining of the hull.
(A)
(B)
BLA Code S18-4456 S18-4457 S18-4458
Suits Exhaust Flange OD mm 75 100 125-150
BLA Code (A) 333296 (A) 333297 (B) 333298 (B) 333300 (B) 333301
Hose O/all Dia. Length mm mm 38 45 50 63 76
136 136 115 145 145
Max Hull Thickness mm 53 53 32 35 35
www.bla.com.au
631
section
33
Foam Sound Insulation
ENGINE ROOM
25mm thick sound insulation that contains a tough impervious facing of reinforced aluminium, which provides high sound absorption and guards against dirt, grease, oil and fluids. Ideal for engine rooms or anywhere that requires noise control. Supplied in 30m rolls only. Features: • Fire retardant to AS 1530.3 • Durable tear resistant facing • Impervious to dust, oils, solvents and fluids • Insulates against heat • Heat and light reflective • Self extinguishing • Optional pressure sensitive adhesive backing • Hydrolysis resistant - foam will not rot • Easy to handle and install • Ignition retardant • Excellent mid-frequency absorption • Low installation cost • Long service life BLA Type Length Code 335010 335020
Thickness Width
Roll
mm
mm
m
25 25
1400 1400
30 30
Non adhesive Self adhesive
Decoupling Foam Sound Insulation Decoupling foam is a composite sandwich material comprising of a flexible high mass noise barrier laminated between two layers of flexible acoustic foam. It increases sound transmission loss and provides sound absorption. Ideal for engine rooms or anywhere that requires noise control. The outer layer of flexi foam comprises foam sound insulation detailed as 335010 above. The base layer comprises of 6mm foam and acts as a decoupling layer which separates the noise barrier and spaces it from the structure. The middle layer is the decoupled noise barrier that adds significantly to the sound transmission loss of the system. The resultant performance exceeds the mass law. Commonly bonded to the structure with spray adhesives. Features: • Fire retardant to AS 1530.3 • Excellent mid to high frequency performance • Resists hydrolysis - foam will not rot • Ignition retardant • Flexible for ease of installation • Reflects heat and light • Resists contamination from dust and liquids • Heat formable • Durable tear resistant facing • Self extinguishing BLA Code
Thickness Sheet Size mm mm
335030
632
32
1300 x 2400
Metalised Tape
Insulation Fixing Buttons
Self-adhesive, reinforced aluminium tape to cover butt joints in the range of sound insulation above. High temperature resistance.
Polypropylene discs with domed head and spiked undersurface, used to mechanically fasten the insulation foam sheets above to bulkhead or ceiling. Spikes grip the foam to prevent slippage without damage. Sold individually.
BLA Width Roll Length Code mm m
BLA Dia Code mm
335050 48
335060
50
Quality marine equipment
50
Mount Hole mm 3 r/h