OC - DSV - BOV - FFM page

Many people have asked me for information about OC-BOV OC-DSV or FFM with BOV function. What does it mean? What is on the market now?

updated 26 may 2010

Well OC- BOV stands for Open circuit Bailout valve, OC - DSV for open circuit diver surface valve and FFM for full face mask. This page shows a collection of rebreather mouthpieces and fullface masks designed to be used with rebreathers and have the capability to save you when there is a problem with your rebreather. You then "Bailout" on open circuit by switching to you inboard or outboard bailout gas by means of a build in open circuit regulator. If you know other manufacturers of Bailout valves or FFM's with bailout facilities, please don't hesitate to let me know! I will add them to this page to get the complete picture!
APD new 2008 OCB valve. Additional information on a dedicated page here
Bob Howell OC-BOV/DSV	One of the older models designed and produced by Bob Howell. Out of production now.

One of the older models designed and produced by Bob Howell. Out of production now.
	One of the older models designed and produced by Bob Howell. Out of production now.
Jetsam (KISS) BOV LINK
	Jetsam (KISS) BOV LINK
The OC/BOV-DSV used on the Cis Lunar MK5, on the top you see the HUD mounted.
	Divematics Bailout valve
Divematics with Dacor OC regulator
	Divematics OC/BOV-DSV
During a couple of years Filip Krolak made this Bailout valve but he stopped business. Nemotech was the company but also stopped business.
	Here you see an example of a possible configuration of the bailout system.
Golem Gear OC/BOV-DSV
	Ron OC- BOV/DSV LINK
Old model Halcyon OC- BOV/DSV LINK
	Halcyon OC- BOV/DSV used on RB80 LINK
Tourill OC- BOV/DSV used on Tourill 1.5 LINK
	V4tec OC- BOV/DSV LINK
Kirby Morgan designed "M48-Supermask" a mask that offers the possibility to use a standard OC regulator because half the mask can be removed very fast. LINK
	Here you see the pod can be removed and there is access for your regular OC regulator. LINK
AGA full face mask. This unit is equipped with Bailoutsystem and the second stage regulator has a apeks shut valve to prevent freeflow. LINK
	Divematics bailout regulator attached to AGA FFM. Divematics
Divematics Widolf mask and OC BOV. Divematics
	Divematics with Widolf mask and OC BOV. Divematics
Divematics + AGA Mask with BOV Divematics
	Draeger Panorama mask here in standard version. http://www.draeger.com
The mask can be equipped with Shark or Apeks second stage regulator. Arrangement is adaptable to a great range of rebreathers. Standard available for Dolphin and Ouroboros rebreathers.
	Here you see the Mask fitted to the Ouroboros rebreather with the Apeks TX 100 bailoutregulator. http://www.draeger.com http://www.apeks.co.uk/
The T-piece connects to the P-port and makes the mask universal in use. http://www.ccrb.co.uk/
	The Ouroboros T-piece is also the DSV and includes the mushroom valves. LINK
Here you see the mask equipped with special Inspiration DSV and OC bailout regulator, and als build in communication system. LINK


Important; The sports mask (above left) cannot be used with the Draeger Dolphin rebreather as the mask would be blown off the face due to the absence of a bite mouthpiece, which would complete the breathing loop. For anyone to use a Draeger Panorama full face mask in conjunction with a rebreather they have to purchase the rebreather version of the mask, no other version of the mask can be used!
	Here the Draeger Panorama mask build on Ouroboros rebreather equipped with OC bailout system. LINK
A rare combination, Scubapro mask with BOV LINK
	Tactical rebreathers FFM with OC bailout. LINK
Divex DMM Link
	Submatix DSV build on Panorama Mask Optional Bailout regulator LINK
Submatix DSV build on Panorama Mask Optional Bailout regulator LINK
	Patent pending


Here you see a picture of the DMM (Dual Mode Mask) which can be fitted to the Divex Stealth. You will note that there is a solid block that has a rotary switch on the front, allowing change from OC, with Posiedon Cyclon 2nd stage, to CCR. The CCR inlet & outlets both have blanks fitted where the corrugated hoses normally fit.
	http://e-nekton.com/xdivehelmet.html
http://e-nekton.com/xdivehelmet.html
	http://e-nekton.com/xdivehelmet.html
http://e-nekton.com/xdivehelmet.html Olivier Isler is currently seeking a company prepared to undertake the manufacture and distribution of the XDH into the wider diving market and can be contacted at: Olivier Isler, Chemin de la Cure, CH - 1114 COLOMBIER, SWITZERLAND. Phone/Fax + 41 21 869 79 00. E-Mail : isleroc@span.ch
	This was the first Halcyon Bailout valve, used on the Big Hall rebreather

Introduced in August 2008 The Tecme BOV More information here: http://www.tecme.de/bov_dsv.htm The BOV has taken OUT of production (2010)




http://www.rebreatherlab.com has launched a BOV : The mechanics of the OC reg are Scubapro S600 so it is balanced. The inhalation membrane is Dacor Vyper, so same as on the Bob Howell.The two exhalation membranes are Aqualung. It is not CE tested, but has been used at 150 m with no complaints. I have tested it my self at 120 m and I really breathed hard in it and did A/B checks comparing with a standard S600.I could not feel much difference in effort. People who buy it seems happy with it. There is no problem to do neg pressure tests as it has the same sealing principle as the Cis-Lunar MK5P BOV but much larger inner bore.






The JJ Mouthpiece is Extreme simpel and Easy to use The work of breathing in CC and OC is extreme low. Going from CC to OC just by turning the hose 1/4 turn like the Inspiration mouthpice but instead of shut off you are now on the regulator. The JJ mouthpiece is produced for all kind of rebreathers. Adaptors are made to fit the hoses. Ex Megladon, Inspiration, rEvon, Dreager, Kiss, Sentinel, Ouroboros, Evolution, Hammerhead CCR, Cis-lunar, Optima The JJ mouthpiece has been developed and testet since June 2007. and have done tests at the Deep Life ltd. for the CE marking. More info: http://www.jj-ccr.com/
	Movie

Rebreather BOV designed as OEM for construction or reconstruction of your own rebreather. It is possible to choose from option with connection of LP tube for an open circuit into mouthpiece from right or left side. The BOV is made of resistant plastic material Delrin. To create a mechanics for open circuit we have chosen components APEKS which guarantee high quality and the components are easily available. http://www.rkndivetech.cz


If you know other manufacturers of Bailout valves or FFM's with bailout facilities, please don't hesitate to let me know! I will add them to this page to get the complete picture!


created 25-02-2007 //latest update 21-12-08

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mail: jw.bech@quicknet.nl