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Proven Quality, Superior Performance

Monsun is a world leader in the design, manufacture and supply of non-return valves for inflatable oil booms,
boats, dunnage bags and pontoons. We are committed to creating quality, hand-assembled products and
providing our clients across the world with fast, personal and efficient service.


The MV XII is a proven, highly effective air valve designed for heavy-duty oil booms and flexible storage tanks for water, oil, and fuel. Smart design and quality construction allow it to be used efficiently, safely and reliably, no matter the job or weather conditions.


For oil booms of limited size, inflatable boats, tanks or other similar objects, the MV XG is an effective, hand-assembled air valve designed to represent both quality and cost-efficiency and deliver easy handling characteristics.


The MV XGN is an updated version of our proven MV XG model. Featuring a smart new screw cap design optimised for safety and reliability, it is an ideal solution for oil booms of limited size, inflatable boats, tanks or other similar objects.


Our new valve suitable for inflatable boats, tents and pontoons.


The updated version of our popular MV XII, now with support for thinner fabrics.

About Monsun

At Monsun, we believe that our customers define who we are – and we’re proud to say that we have supplied many of them for many years. We believe in innovating and developing, whilst never losing focus on the fact that our customers and the challenges they face are our top priority.

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Our Customers

Although our customers come from diverse industries, they have a common need for reliable, high-quality non-return valves and related equipment and services. We provide the hardware and support they need to get difficult jobs done with peace of mind.

Why Monsun Air System ®


Many of our customers often rely on us to supply products quickly, especially in emergency situations. That’s why Monsun guarantees 14-day worldwide delivery of up to 1000 units.

Superior quality

All Monsun products are hand-assembled, thoroughly checked and guaranteed for quality before leaving our plant. In the event of any defects, we will quickly and cost-free supply replacements.

40 years of knowledge

Monsun was started by entrepreneur Elis Andreasson in the Swedish town of Vänersborg in 1971. The experience accumulated over this time means that we are as much expertise supplier as product supplier.