Halyard® exhaust units are infinitely stronger than the plastic and GRP units on the market. Halyard® uses 3 mm thick 316 stainless to ensure that the risks of damage when manoeuvring a craft are reduced to the absolute minimum.
All units are designed so that the flap, at rest, is shrouded by the stainless rim to prevent damage if the vessel nudges a harbour wall.
BULKHEAD EXHAUST UNITS – NEOPRENE FLAP VALVE
Units to accept exhaust hose up to and including 100 mm (4”) hose have neoprene flaps.
Each has a really generous tail allowing “T” bar exhaust hose clamps to be used to secure the hose.
Smaller sizes have 3 countersunk fixing holes.
The 90 mm and 100 mm (3.5” and 4”) units have 4 bolt holes and a bolting flange which fits right around the unit inside the hull.
BULKHEAD EXHAUST UNITS – STAINLESS FLAP VALVE
Units from 125 mm (5”) upwards all have stainless flaps lined with neoprene.
All have tails with plenty of space to use proper “T” bar clamps to secure the hose.
Between 4 and 8 bolt holes are provided and all units have bolting flanges to fit around the unit inside the hull.