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Divator MkII mask and demand valve assembly, yellow (standard pressure)

  • Divator Yellow (silicone rubber) mask with the full-monty for keeping warm and dry, on a cold day in the Hebrides.
I was a lot warmer than the guys on the boat - note the sleeve-sealing XEROTECH gloves.
But, you know; Silicone masks are no where near as strong and durable as the original rubber. So, if I was buying one, I'd have a grey one.
We made the Silicone masks for the chemical industry and 'dirty' diving because they are less prone to perishing but, your silicone masks (available in yellow or black) are five times more likely to need expensive repair, within a few years!
  • Divator yellow mask, on a rig incorporating our Dive-gas management manifold, which is ideal for alternating gas supplies, whether using mixed gases, or simply a twin air pack. All controls are ventral and (usually, barring photography) tucked away, neatly mounted on the diver's webbing but readily accessible to a gloved hand; safely operated without having to look at the valve wheels. Note the Divator Sport regulator, in the left hand - usually this is tucked away for emergency rescue purposes; controlled through the Dive-gas manifold.
A careful look, near the diver's eyes, reveals the special lugs, built in to the mask, to accommodate its being fitted with prescription spectacles.
£676.80 (inc VAT) £564.00 (exc VAT)
0.80 KGS
Calculated at checkout
Minimum Purchase:
1 unit(s)
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Product Description

Divator:                 General Specifications for 'AGA' mask and Demand Valve

Assembly detail:


Special features

Test Protocol


Mask Assembly:

Low volume optically correct visor, plastic parts are glass filled nylon 12; mask made from Grey, Natural, SBR and Neoprene rubber compound

  1. Helios helmet and head lamp

Elastic and strong, comfortable fit for most adults

This version is recommended for most users.




A variety of hose options are available but the mask and demand valve assembly does not come with a supply hose in the price.

Mask Assembly:

As above but outer & inner mask is made from Yellow silicone rubber compound

  1. Helios helmet and head lamp

Resistant to perishing but not as strong as the grey mask


As above.

All metal components of the mask are 316 stainless and nickel or chrome finished Brass 121.

Inner Mask

Fitted to all full-face masks

Reduces re-breathing of Carbon dioxide to lower than ½% Volume


Hypoallergenic rubber

Demand Valve Assembly

Automatic compensation for supply gas pressure changes and ambient pressure.

Standard pressure.

Valve responds at ambient pressure minus 5-mm water gauge. This unit can be fitted with “off” switch; useful if the valve is used as a spare

Fully balanced downstream valve with built in pressure relief and safety purge design. Work of Breathing less than 1 Joule/litre, response time less than 30 milliseconds


Plastic parts are glass filled nylon 12; metal components of the mask nickel or chrome finished Brass 121.

Demand Valve Assembly

Automatic compensation for supply gas pressure changes and ambient pressure.

Positive pressure valve

As for standard valve but external pollution is kept out of the mask and the lungs increase gaseous exchange area, achieving better gas perfusion.


As above

Suitable Air supply via ¼” id. supply hose

>1000 Litres per minute at a dynamic pressure exceeding 6.5 Bar

This will be achieved with any Pressure Reducer meeting EN250.

The Divator reducer unit is ideally suited.


Measured at unopposed 3/8” unf, reducer port at ambient pressure of 1 Bar.

What is standard?

Mask and front port plate. Instruction manual

Demand Valve, balanced pressure type


Suitable for use with oxygen up to 20 Bar

What is extra, which might be desirable?

Prescription glasses and fitting kit

Buddy phone communications

Supply hose

Diving with a buddy who is also equipped with the World’s best demand valve


Welding visor

Mouth piece for “sports” conversion

Speech diaphragm



Hard wire communications

Dive gas control manifold

Quick release hoses


If further detail is needed; please submit an enquiry in 'contact us', or telephone a technician, on: 01952 461541 

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