Ventilation Mushroom

Ventilation Mushroom

Introduction

A ventilation mushroom is a type of ventilation device commonly used on boats and marine vessels to allow air to circulate through the engine compartment, bilge, or other areas of the vessel that require ventilation.

The ventilation mushroom typically consists of a round or oval-shaped hood, or cowl, which is mounted on a vertical shaft that extends above the deck of the vessel. The hood is designed to capture the wind and direct it downward into the shaft, which then vents the air to the area that requires ventilation.

To install a ventilation mushroom on a marine vessel, you will need to select a suitable location for the mushroom that will provide the required ventilation while also minimizing the risk of water ingress. The mushroom should be mounted on a watertight flange or base that is securely bolted to the deck of the vessel.

It is important to ensure that the ventilation mushroom is properly sized for the area that requires ventilation, and that it is positioned to provide adequate air flow. Regular maintenance of the ventilation system is also essential to ensure that it remains in good working order, and that it continues to provide effective ventilation for the vessel.

Type

Type	Name	Nominal diameter (mm)
A	Inside on-off hood ventilator	150~350
B	Outer on-off obturation ventilator	250~1200
C	Outer on-off obturation  axial flow ventilator	250~1200
D	Fixed ventilated canister	200~1200
E	Inside on-off obturation ventilator	150~350

Specification

Type	D1	H1	L	H
DN150	250	40	250	100
DN200	320	50	250	110
DN250	390	65	300	125
DN300	470	75	300	135
DN350	540	90	350	150