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Heavy Duty waterlocks Made of the special blended composite NAVIDURIN® which is temperature resistant up to 500oF (260oC) - these Heavy Duty waterlocks outperform standard GRP materials by 170%! The same applies for the thermal resistance to deformation under pressure. NLPHD Series The NLPHD series is perfect for medium to large size sail or power boats, with exhaust diameters from Ø 1 9/16" to 3 1/2" (40 to 90 mm). Unique features • Special composite blend (NAVIDURIN®) is capable of handling temperatures up to 500oF (260oC) • Fits Ø 1 9/16", 1 3/4", 2", 2 3/8", 3" and 3 1/2" (40, 45, 50, 60, 75 and 90 mm) exhausts • Excellent sound attenuation with minimal back pressure • Rotating body and hose connections for easy installation • Available in black HPW Series The HPW series was designed for heavy duty applications such as commercial and military vessels. The ability to handle extreme conditions combined with the rotating bodies and hose connections makes the HPW series an cost effective solution for your vessel compared to higher priced custom solutions. Unique features • Special composite blend (NAVIDURIN®) is capable of handling temperatures up to 500oF (260oC) • High capacity water lift design providing complete security for your engine • Excellent sound attenuation with minimal back pressure • Rotating body and hose connections for easy installation • Complete with floor mounting brackets |
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Type WLOCKLP Suitable for exhaust hose with an internal diameter of Ø 1 3/16” (30 mm)
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Type WLOCKLR Suitable for exhaust hose with an internal diameter of Ø 1 9/16” (40 mm), 13/4” (45 mm) or 2” (50 mm)
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Type WLOCKLS and WLOCKLP Suitable for exhaust hose with an internal diameter of Ø 2” (50 mm), 2 3/8” (60 mm), 3” (75 mm) or 3 1/2” (90 mm)
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Type LSSA Suitable for exhaust hose with an internal diameter of Ø 1 9/16” (40 mm), 1 3/4” (45 mm) or 2” (50 mm)
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Type LSL Suitable for exhaust hose with an internal diameter of Ø 2 3/8” (60 mm), 3” (75 mm) or 3 1/2” (90 mm)
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Type LSG With incorporated check valve for extra security Suitable for exhaust hose with an internal diameter of Ø 2 3/8” (60 mm), 3” (75 mm) or 3 1/2” (90 mm)
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Dual Stage waterlocks Superior silencing, minimal back pressure Our NLP waterlocks are of dual stage construction featuring upper and lower chambers with a horizontal partition plate and a riser tube through the center. The installation of the exhaust system, even in confined engine spaces, is greatly simplified due to the 360o rotating top chamber and rotating inlet and outlet connectors. For optimum silencing of exhaust noise you can also use a VETUS muffler and gooseneck, after the waterlock. Specifications:
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NLPH Waterlock/muffler Designed for horizontal installation The body of this waterlock / muffler consists of two rotatable chambers and fully rotatable hose connections, ensuring simple and time saving installation in a wide range of applications.
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NLP3 The quietest waterlock in the world! Due to its unique three chamber technology it has a sound reduction of an incredible 10dB more than the traditional waterlocks. Its rotatable chambers and hose connections ensure a quick and simple installation even in the most confined spaces.
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MG Waterlocks specifically for larger boats Excellent sound reduction, minimal back pressure This type of waterlock is designed for modern high performance boats with one or two large engines which have little space to spare in the engine room. The outlet connection at the top can rotate through 360o and the inlet connection is at an angle of 45o upward. Type MG can only be installed in water injected exhaust systems. Its body is entirely made of synthetic materials, therefore not susceptible to corrosion or galvanic action.
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MV Exhaust systems for high-performance
craft Especially developed for fast craft with powerful engines This system is perfect for fast craft with powerful engines without available space for installation of a waterlock and/or gooseneck. By using one of these compact mufflers, you have tremendous reduction of exhaust noise with minimal back pressure. All parts are made of synthetic materials, corrosion free and light weight. The transom connections for this system are available in stainless steel (AISI 316) or reinforced black plastic. Waterlock type MV and the transom connection are provided with a check valve which prevents the seawater from flowing into the engine. Early warning of engine overheating can be achieved with an exhaust temperature alarm. VETUS highly recommends installing an exhaust temperature alarm, which triggers when the temperature in the waterlock exceeds a safe level. The alarm sensor can be installed in the waterlock (model XHSM), or in the exhaust hose (model XHSH).
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Waterlocks specifically for commercial boats Made of the special blended composite NAVIDURIN® - which is temperature resistant up to 500oF (260oC) - these Heavy Duty waterlocks outperform standard GRP materials by 170%! The same applies for the thermal resistance to deformation under pressure. We offer two types of HD waterlocks; the NLPHD (1.2 - 2.6 gallon / 4.5 - 10 liter) and the HPW (14.5 gallon / 55 liter). The NLP waterlock design is already known for its extraordinary noise reduction features, versatile installation options and extremely low back pressure. Made from NAVIDURIN®, this product can meet any challenge. The Heavy Duty Line is therefore unique in this market! A more cost effective and technically superior exhaust component, even compared with GRP or stainless steel waterlocks. The HPW series is perfect for applications where the system is put to the test such as commercial or coastguard vessels.
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DEMPMP Muffler The construction of this muffler causes almost no resistance to the free flow of the exhaust gases. It creates additional mixing of the water inside the exhaust line which results in even better noise reduction.
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  Type NLPG40 - 45 - 50  Type NLPG60 - 75 - 90 |
NLPG Muffler and gooseneck Combining the functions of a muffler and gooseneck saves installation time and space while maintaining the essential qualities of a good exhaust system with impressive negligible back pressure. The gooseneck prevents water back filling the exhaust and the muffler creates additional water mixing to further reduce the exhaust noise.
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WLOCKLT gooseneck This gooseneck is suitable for an exhaust hose with an internal diameter of Ø 1 9/16”, 1 3/4”, 2” or 2 3/8” (40, 45, 51 or 60 mm). Engines with a 2 1⁄4” (57 mm) exhaust elbow can be connected to a 2 3/8” (60 mm) VETUS exhaust hose and use 2 3/8” (60 mm) exhaust components.
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LT gooseneck This gooseneck is suitable for an exhaust hose with an internal diameter of Ø 3”, 3 1/2”, 4”, 5" or 6” (76, 90, 102, 127 or 152 mm). Supplied with stainless steel (AISI 316) mounting brackets
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Anti siphoning air vents When the cooling water injection point is less than 15 cm above the waterline, the cooling system can siphon water through the intake when the engine is turned off. Water can siphon into the exhaust system and even into the engine itself. This can be prevented by using an air vent.
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Air vents For both model ASD and AIRVENT a mounting bracket is available to facilitate installation onto surfaces clad with sound insulation (see page 66). This mounting bracket is supplied with bolts, washers and self-locking nuts to mount the air vent.
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Gas / water separator The VETUS gas / water separator has a double function. It separates the injected raw cooling water from the exhaust gases and also functions as a gooseneck. Particularly important for generator sets, the separator reduces the exhaust noise and drains the cooling water below the waterline, thus preventing the characteristic splashing sound.
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TRCR Transom Exhaust connections The flexible EPDM rubber connector is mounted to the outside of the transom with a 3/32” (2 mm) thick stainless steel (AISI 316) mounting ring. VETUS mufflers and goosenecks with corresponding dimensions fit directly into the rubber sleeve. For connection of the exhaust hose, a plastic connector type SLVBR or SLVBG is required.
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TRCPV Transom Exhaust connections Type TRCPV has a synthetic body and an integral check valve. The exhaust hose can be fitted directly to these transom connectors.
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TRCSV Transom Exhaust connections Type TRCSV is made from stainless steel (AISI 316) and has an integral check valve. The exhaust hose can be fitted directly to these transom connectors.
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Type TC Type TC is made from black glass reinforced synthetic with a decorative stainless steel (AISI 316) band. The exhaust hose can be fitted directly to this transom connector.
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Exhaust temperature alarm A blockage in the engine water intake or a damaged pump impeller will result in a complete loss, or severe reduction in the volume of cooling water in the exhaust system. In this case the temperature in the exhaust will rise much faster than the temperature of the engine. VETUS always recommends placing an exhaust temperature alarm that provides a visual and audible alarm when the temperature inside the exhaust hose or the muffler exceeds an acceptable level.
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Type SLVBR Synthetic hose connectors These hose connectors are made of synthetic material and are available in a straight, 60o or 90o bend type. This is a straight type and suitable for hoses with an internal diameter of Ø 1 9/16” to 5 7/8” (40 to 150 mm).
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Type SLVBG Synthetic hose connectors This is a 60o bend type and suitable for hoses with an internal diameter of Ø 1 9/16” to 5 7/8” (40 to 150 mm).
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Type ELB Synthetic hose connectors This is a 90o bend type and suitable for hoses with an internal diameter of Ø 5”, 6”, 8” or 10” (127, 152, 203 or 254 mm).
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Flexible mountings for waterlocks These flexible mountings can be used to minimize the noise caused by induced vibrations in the waterlock. Code is for a set of four mounts.
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Water mixer In some boats the exhaust waterlock must be positioned so closely behind the engine’s exhaust manifold (this is especially true in the case of near horizontal exhaust assemblies), that the injected cooling water does not always mix properly with the hot exhaust gases. This often results in the exhaust hose and/or the waterlock becoming overheated. Installation of a water mixer directly behind the exhaust manifold will prevent this problem. The water mixer is available for exhaust hoses with inside diameter of 3 1/2”, 4”, 5”, 6” (90, 100, 125 or 150 mm).
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