Compact Waterlock, for high performanced boats. Often in a modern high performance boat, with one or two large engines installed, there is very little space to spare in the engine room. Model MG are designed to make even the most awkward installation possible. The outlet connection at the top will rotate through 360º and the inlet connection is at an angle of 45º. It may only be installed in water injected exhaust systems. They are made entirely of synthetic materials (no corrosion) have excellent sound reduction properties and cause minimal back pressure. Maximum operating temperature is 70 ºC.