The NLP waterlocks are of dual stage construction, featuring upper and lower chambers with a horizontal partition plate and a riser tube through the centre. These NLP waterlocks offer superior silencing of exhaust noise with minimal back pressure. Since the top chamber may be rotated through 360° and both the inlet and the outlet connectors can rotate through 360°, installation of the exhaust assembly even in confined engine spaces is greatly simplified.
The rotatable inlet of the waterlock is connected to the engine exhaust manifold, using VETUS exhaust hose. The exhaust gases, mixed with cooling water are forced from the lower chamber into the upper one, via the central riser tube and then through the (also rotatable) outlet connector at the top. This outlet connector is coupled to the transom connector, again by means of VETUS exhaust hose. For optimum silencing of exhaust noise, we recommend installation of a VETUS muffler and gooseneck NLPG in the exhaust line, after the NLP waterlock. The mounting brackets enable these waterlocks to be either bulkhead or floor mounted.
Suitable for exhaust hose with inside diameter of resp. Ø 40mm, Ø 45mm, Ø 51mm, Ø 60mm, Ø 76mm or Ø 90mm. Provided with drain plugs (for winter storage) and straps to secure the waterlock to the boat are supplied as standard. Types NLP40, 45, 50 have a capacity of 4.5 liters. Types NLP50S, 60, 75, and 90 have a capacity of 10 liters.