SMP LTD  - Submarine Manufacturing and Products Limited
Like SMP on
SMP on

SMP LTD - Commercial Diving Equipment & Hyperbaric Chambers

Divex AH5 Freeflow Air Helmet

Browse Commercial Diving Equipment
SMP are Registered Members of IMCA Registered members of IMCA

We are BSI Registered

We are BSI Registered for ISO 9001 & ISO 14001

Divex AH5 Freeflow Air Helmet

The Divex AH5 Freeflow Air helmet that has long been accepted by many commercial divers as the standard for safety, quality, performance and reliability.

Divex AH5 Freeflow Air Helmet

Download Product Datasheet
Click here to download product datasheet

Divex AH5 Freeflow Air Diving Helmet
Ref: 000293
Add to item quote
For sales enquiries please 'Add to Quote'
or contact us / call our UK based sales team on +44 (0)1772 687775


The lightweight, Divex AH5 free-flow air helmet is designed to be used either fitted with its own neck-seal, or locked directly into a drysuit. Because it combines many of the advantages of both the traditional hard-hat helmet and of modern diving masks, the AH5 is recommended for tasks as diverse as heavy construction, mobile inspection, for protracted dives in cold and polluted waters, and nuclear diving. Locked into a drysuit, the AH5 can give the diver protection in polluted waters, and it also allows the diver to control his buoyancy by adjusting the helmets’s valves. One option for the AH5 is to increase the maximum over-pressure within the helmet. This option is frequently used with a locked-on drysuit. Weights are added to allow the diver to adjust his buoyancy and become substantially negative at his place of work-to reduce the effects of strong currents and the high reactive force from work tools.


Air Inlet & Bailout: The inlet valve assembly has been designed for simple usage with strong metal handwheels and is fitted with a 9/16” UNF Bullnose. The emergency air system is completely independent of the main air system, thus not compromising the safety of the diver, and is fitted with a 9/16” UNF ‘O’ ring seal.

Neck-ring assembly: The neck-ring assembly is a streamlined design with very little risk of snagging. Constructed from aluminium-bronze which is widely used
for marine application because of its corrosion resistance. Connection is by quarter-turn, interrupted threads.

De-Mist: The directional air deflector allows air to flow across the whole of the main face-plate for demisting.

For instant service contact our sales team
Telephone +44 (0)1772 687775

Our top selling Commercial Diving Equipment

Kirby Morgan 37 Commercial Divers Helmet

The Kirby Morgan 37 Commercial Divers Helmet is one of the most popular designs in the commercial diving world. It's considered the standard of the commercial diving industry.

SMP Twin Basket Diver Launch And Recovery System (LARS)

SMP’s Dual Basket Launch And Recovery System has been specifically designed to give a compact operating footprint to minimise the deck space required on board a vessel or barge.

Coltri MCH 6 EM Electric Portable Breathing Air Compressor (MCH6)

Light and easy to handle, the Coltri MCH 6 breathing air compressor is technically advanced, but simple and economical to use. These features mean that you can use this motor driven MCH 6 diving compressor even in your own home.

Kirby Morgan 18B Band Masks

The fully tested and certified, the Kirby Morgan KMB 18B Band Masks may be used by commercial divers in mixed gas commercial diving as well as shallow water commercial diving.

AGA Interspiro Divator MK II Face Mask

The Interspiro line of diving full-face masks (FFMs) are high quality masks and have been field proven by Government, Military, and Commercial & Public Safety Teams around the world. 

Kirby Morgan EXO-BR Full Face Mask

The Kirby Morgan EXO Full Face Mask was designed for both surface supplied and scuba diving.