Vetus Exhaust Systems


Vetus offer a comprehensive range of exhaust system components, including waterlocks, mufflers and goosenecks.

These are all suitable for wet exhaust systems and act to prevent water from running back along the system and into the engine. We recommend that all exhaust systems are fitted with a high temperature alarm in order to provide a warning of potential problems.

Installation with engine high

Exhaust

When an engine is installed relatively high compared to the vessel's waterline, the installation of the exhaust system may be done without modification to the engine, as long as the water injection point on the injection bend from the exhaust manifold is at least 15cm (6 inches) above the waterline.
The waterlock should be installed at the lowest point of the exhaust system (a minimum of 30cm from the injection point) in order to allow it to collect any water that is left in the exhaust system once the engine is switched off. Ideally, a gooseneck should be installed at the transom connector, otherwise the exhaust hose should be looped up as high as possible to prevent water from entering the boat in a following sea or due to engine suction. If required, a muffler may be fitted between the waterlock and the gooseneck.

 

Installation with engine low

Exhaust

If an engine is installed relatively low compared to the vessel's waterline, ie with the water injection point engine's exhaust less than leat 15cm (6 inches) above the waterline, then an aivent should be fitted to avoid syphoning.
As before, the waterlock should be installed at the lowest point of the exhaust system (a minimum of 30cm from the injection point). Again, a gooseneck should be installed at the transom connector, otherwise the exhaust hose should be looped up as high as possible to prevent water from entering the boat in a following sea or due to engine suction. If required, a muffler may be fitted between the waterlock and the gooseneck.

 

Single-stage waterlocks

A waterlock collects the cooling water present in the exhaust system when the engine has stopped, helping to prevent water ingress into the engine. The size of the waterlock should be determined by not only the size of the exhaust hose, but also by the length of the exhast system, hence Vetus offers waterlocks with extra capacity to suit installations with long exhaust runs.

Code Description Sizes  
WLOCKLP Suitable for exhaust hose with 30mm internal diameter. Provided with a drain plug for winter storage.
Dimensions: 240mm long x 90mm wide x 180mm high.
Capacity: 2.3 litres.
30mm LP30
WLOCKLR For exhaust hose with internal diameters of 40mm, 45mm or 51mm. Provided with a plug for draining over winter. The inlet connection of this waterlock will rotate through 360 degrees, which greatly facilitates the installation of the exhuaust assembly.
Dimensions: 372mm long x 110mm wide x 211mm high.
Capacity: 4.3 litres.
40mm
45mm
51mm
WLOCKL
WLOCKLP For exhaust hose with internal diameters of 51mm, 60mm, 75mm or 90mm. Provided with a plug for draining over winter. The 50mm version is recommended for exhaust systems over 4m in length due to its extra capacity compared to the L50R model, above.
Dimensions: 530mm long x 138mm wide x 290mm high.
Capacity: 10.5 litres.
51mm
60mm
75mm
90mm
WLOCKLP
LSS For exhaust hose with internal diameters of 40mm, 45mm or 51mm. Provided with a plug for draining over winter. Especially designed for longer exhaust systems and with a lower profile for easy installation under floor. Features rotating inlet and outlet connectors for easy of fitting.
Dimensions: 430mm long x 152mm wide x 225mm high.
Capacity: 7.5 litres.
40mm
45mm
51mm
LSS
LSL For exhaust hose with internal diameters of 60mm, 75mm or 90mm. Provided with a plug for draining over winter. Designed for long, relatively straight exhaust runs, for example in sailing boats. Fixed inlet and outlet connectors.
Dimensions: 596mm long x 170mm wide x 310mm high.
Capacity: 16 litres.
60mm
75mm
90mm
LSL
LSG For exhaust hose with internal diameters of 60mm, 75mm or 90mm. Provided with a plug for draining over winter. Designed for long exhaust systems. Rotating inlet and outlet connectors for ease of connection and includes flapper check valve incorporated in inlet.
Dimensions: 578mm long x 170mm wide x 368mm high.
Capacity: 17 litres.
60mm
75mm
90mm
LSG

Dual-stage waterlocks

NLP

Vetus NLP and MG waterlocks are of dual stage construction, featuring upper and lower chambers with a horizontal partition plate and a riser tube through the centre. Compared with single stage waterlocks with one chamber, these waterlocks offer superior silencing of exhaust noise with minimal back pressure. Since the top chamber may be rotated through 360 degrees, installation of the exhaust system even in confined spaces is greatly simplified.

Code Description Sizes  
NLP Suitable for exhaust hose with 40mm, 45mm or 51mm internal diameter. Inlet and outlet connectors rotate through 360 degrees for ease of installation. Supplied with fixing straps and a drain plug for winter storage.
Dimensions: 165mm diameter x 254mm high x 385mm maximum length
Capacity: 4.5 litres.
40mm
45mm
51mm
NLP
NLP Suitable for exhaust hose with 50mm, 60mm, 75mm or 90mm internal diameter. Inlet and outlet connectors rotate through 360 degrees for ease of installation. Supplied with fixing straps and a drain plug for winter storage.
Dimensions: 210mm diameter x 362mm high x 515mm maximum length
Capacity: 10 litres.
50mm
60mm
75mm
90
NLP
MGP Suitable for exhaust hose with 90mm, 102mm or 127mm internal diameter; may also be supplied with 102mm inlet and 127mm outlet. Inlet connection angled at 45 degrees up, outlet connection horizontal. Outlet connector must be installed a minimum of 40cm above the waterline.
Dimensions: 270mm diameter x 450mm high
Capacity:23 litres.
90mm
102mm
102/127mm
127mm
MGP
MGS Suitable for exhaust hose with 127mm or 152mm internal diameter; may also be supplied with 127mm inlet and 152mm outlet. Inlet connection angled at 45 degrees up, outlet connection horizontal. Outlet connector must be installed a minimum of 40cm above the waterline.
Dimensions: 270mm diameter x 450mm high
Capacity:75 litres.
127mm
127/152mm
/152mm
MGS
MGL This waterlock may be supplied suitable for exhaust hoses with internal diameters: 152mm inlet with 203mm outlet; 203mm inlet and 203mm outlet; and 203mm inlet and 250mm outlet. Inlet connection angled at 45 degrees up, outlet connection horizontal. Outlet connector must be installed a minimum of 40cm above the waterline.
Dimensions: 500mm diameter x 750mm high
Capacity:130 litres.
152/203mm
203mm
203/250mm
MGL

Goosenecks

A gooseneck raises the exhaust hose above the waterline, so that water cannot easily backfill the exhaust system, both by providing additional height that the water must climb, but also additional volume compared to a loop of exhaust hose. The gooseneck can be fitted directly onto a Vetus rubber transom connector, saving space in an often constricted place.

Code Description Sizes  
WLOCKLT Suitable for exhaust hose with 40mm, 45mm, 51mm or 60mm internal diameter. May be directly connected to a rubber transom exhaust connector.
Dimensions: 182mm long x 135mm wide x 502mm high.
40mm
45mm
51mm
60mm
WLOCKLT
LT Suitable for exhaust hose with 76mm, 90mm, 102mm, 127mm or 152mm internal diameter. May be directly connected to a rubber transom exhaust connector.
Dimensions: 155mm long x 235mm wide x 500mm high (model for 76mm hose)
Dimensions: 210mm long x 300mm wide x 525mm high (models for 90mm or 102mm hose)
Dimensions: 275mm long x 380mm wide x 565mm high (model for 127mm or 152mm hose)
76mm
90mm
102mm
127mm
152mm
LT

Mufflers

The Vetus muffler provides a useful function in reducing the noise of the engine that escapes through the exhaust system. The construction causes very little resistance to the free flow of exhaust gasses.

Code Description Sizes  
DEMPMP Suitable for exhaust hose with 40mm, 45mm, 51mm, 60mm, 75mm, 90mm or 102mm internal diameter. This muffler creates a mixing effect on the water inside the exhaust line which results in even better noise reduction.
Dimensions: 368mm long x 158mm wide x 108mm high (models for 40mm, 45mm, 51mm, 60mm or 76mm hoses).
Dimensions: 456mm long x 180mm wide x 130mm high (models for 90mm or 102mm hoses).
40mm
45mm
51mm
60mm
76mm
90mm
102mm
DEMPMP
MF Suitable for exhaust hose with 90mm, 100mm, 125mm or 150mm internal diameter. Designed for fast boats with powerful engines and more suitable when the exhaust run has to be low down in the boat,in which case the transom outlet does not have to be lower than the outlet of the engine exhaust manifold.
Dimensions: 728mm long x 210mm diameter (model for 90mm hose).
Dimensions: 735mm long x 210mm diameter (model for 100mm hose).
Dimensions: 940mm long x 320mm diameter (model for 125mm hose).
Dimensions: 959mm long x 320mm diameter (model for 150mm hose).
90mm
100mm
125mm
150mm
MF
MV Suitable for exhaust hose with 90mm, 100mm, 125mm or 150mm internal diameter. Designed for fast boats with powerful engines. Includes a flapper valve in the inlet neck: it is advised that a transom connector with a check valve is also used. Please note that this model should only be used where the transom connection is at least 5cm lower than the outlet of the engine's exhaust manifold, A fitting for the installation of an exhaust alarm sensor is included.
Dimensions: 702mm long x 210mm diameter (models for 90mm or 100mm hoses).
Dimensions: 910mm long x 320mm diameter (models for 125mm or 150mm hoses).
90mm
100mm
125mm
150mm
MF

Gas/water separators

Some marine diesel engines and in particular generator sets can produce a gurgling exhaust noise. The Vetus gas/water separator offers the ultimate solution because it separates the cooling water from the exhaust gases and eliminates the gurgling completely.

Code Description Sizes  
LGS Suitable for exhaust hose with 40mm, 45mm or 51mm internal diameter. Supplied with stainless steel mounting bracket. Water outlet 38mm.
Dimensions: 406mm long x 134mm wide x 370mm high.
Capacity: 7 litres.
40mm
45mm
50mm
LGS
LGS Suitable for exhaust hose with 60mm or 75mm internal diameter. Supplied with synthetic mounting straps. Water outlet 50mm.
Dimensions: 540mm long x 170mm wide x 420mm high.
Capacity: 12 litres.
40mm
45mm
50mm
LGS

Other items

We are able to supply the entire range of Vetus components to complete an exhaust installation. Several different models of transom connector, including a rubber version intended for direct connection to the gooseneck to optimise installation space at the transom. To complete the job, an exhaust temperature alarm may also be fitted, that will provide an alert if an overheat problem occurs.

Code Description Sizes  
AIRVENT
AIRVENTH
This anti-syphon valve can be fitted into the water injection pipe of the engine before it goes into the injection bend. It will provide a syphon break that will prevent cooling water from entering the engine and is suitable for installations when the engine is installed less than 15cm above the waterline. The airvent is available either with a valve or with a hose to allow a bleed-off outside the hull.
Dimensions: 162mm high x 98mm wide x 50mm deep.
Suitable for water hoses with inside diameters 13mm, 19mm, 25mm or 32mm.
- AIRVENTH
TRCPV Transom connector made of plastic, incorporating a rubber flapper valve. The exhaust hose may be connected directly to the transom connector. 40mm
45mm
50mm
60mm
75mm
90mm
TRCPV
TC Transom connector made of plastic, incorporating a rubber flapper valve. Fitted with a high-gloss steel band around the outlet. The exhaust hose may be connected directly to the transom connector. 90mm
102mm
127mm
152mm
TC
TRCSV Transom connector made of stainless steel, incorporating a rubber flapper valve. The exhaust hose may be connected directly to the transom connector. 40mm
45mm
51mm
60mm
76mm
90mm
102mm
127mm
152mm
TRCSV
TRCR Transom connector made of rubber, with a high-gloss cover on the exterior. A Vetus gooseneck or muffler may be connected directly to the transom connector, maximising space at the transom. If exhaust hose is to be connected directly to the transom connector, then a plastic hose connector will be required. 40mm
45mm
51mm
60mm
76/90mm
TRCR
MIXER In some installations, the exhaust muffler must be positioned so closely to ther water injection manifold that the cooling water may not mix properly with the exhaust gasses. The Vetus exhaust mixer will improve the water/gas mixing and help prevent the muffler from becoming overheated. 90mm
100mm
125mm
150mm
MIXER
XHI A Vetus exhaust alarm will provide a rapid alert if an overheat is detected in the exhaust system, for example caused by a damaged water pump impeller or a blockage. Such a problem can result in damage to exhaust system components as temperatures will rise very quickly if water stops pumping. This gauge can be fitted with sensors in two exhaust systems to provide a single warning for two exhaust systems; or one sender may operate tow gauges in the case of a second steering position.
Dimensions: 52mm cut-out, outer dimension 62mm.
- XHI
SLANG Thanks to increased spiral reinforcements and a more supple type of rubber, Vetus exhaust hoses are now even stronger, as well as more flexible. In order to reduce back pressure, the inside of all Vetus exhaust hose is completely smooth. It is temperature-resiatant between -30 and +100 degrees centigrade, with a brief peak temperature of 115 degrees centigrade. These hoses are Lloyd's approved and satisfy the SAE J2006 R2 directive.
Internal / External / Minimum bend radius
30mm / 38mm / 45mm
40mm / 48mm / 60mm
45mm / 53mm / 68mm
51mm / 59mm / 77mm
57mm / 65mm / 86mm
60mm / 73mm / 90mm
65mm / 73mm / 98mm
76mm / 84mm / 114mm
90mm / 98mm / 135mm
102mm / 110mm / 153mm
110mm / 120mm / 165mm
127mm / 137mm / 191mm
152mm / 163mm / 228mm
203mm / 218mm / 406mm
254mm / 270mm / 508mm
303mm / 323mm / 606mm
- SLANG
SLVBR
SLVBG
Hose connectors, made of synthetic material are available as straight connectors or with a 60 degree bend for exhaust hose with internat diameters from 40mm to 150mm inclusive. - HHCS
HHCS Stainless steel heavy-duty hose clamps are available for all sizes of Vetus exhaust hose. - HHCS

Note: all specifications are subject to change without notice. Please contact us for details of prices and any further information, full details are available in the current Vetus catalogue which you can request online.


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