The latest generation of Vetus waterlocks, type NLP are amde of injection-moulded plasitc materials, making them lightweight, durable and corrosion proof. These NLP 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 using only one chamber, 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.

How it works

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 the through the outlet connector at the top. This outlet connector is coupled to the transom connector, again by means of Vetus exhaust hose.

Technical documentation

• Waterlock parts guide
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• LSG/NLP/LGS Installation instructions (EN, NL, DE, FR, ES, IT)
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• NLP Installation instructions (EN, NL, DE, FR, ES, IT)
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