OPV Settings

MHD · 10th October 2005, 08:58

Having just installed a drysuit type OPV valve in my coverted SCR, what setting do people find they run these at? The valve is a standard Apeks high profile dump valve. Do people set them to breathe easy or do people prefer some back pressure to prevent wasted gas?. One thing to note is the unit has back mount counterlungs (converted azi) so too much back pressure will rapidly increase the work of breathing on ascent

Matt

Joseph Grech · 10th October 2005, 10:14

Matt, I am also running a converted AZI. Why on earth did you not retain the original opv ? If you look at it closely it is a work of art and much better than the Apeks one. Also the original valve can be set precisely with the supplied pressure gauge.

buggeriamold · 10th October 2005, 10:19

Matt,

on my ck i run the opv fully closed, all gas gets vented by me, that way i know what is going on.

Mark

decoweenie · 10th October 2005, 10:25

Quote: (Originally Posted by buggeriamold)

on my ck i run the opv fully closed, all gas gets vented by me, that way i know what is going on.

Ditto.

10th October 2005, 08:58	#1 (permalink)
MHD Custom Title Allowed! Current Rebreather/s: Home Build Other Rebreather/s: Sport Kiss Home Build Join Date: Feb 2005 Location: Brisbane, QLD, Australia Posts: 239	OPV Settings Having just installed a drysuit type OPV valve in my coverted SCR, what setting do people find they run these at? The valve is a standard Apeks high profile dump valve. Do people set them to breathe easy or do people prefer some back pressure to prevent wasted gas?. One thing to note is the unit has back mount counterlungs (converted azi) so too much back pressure will rapidly increase the work of breathing on ascent Matt
(Offline)

10th October 2005, 10:14	#2 (permalink)
Joseph Grech Joseph Grech Current Rebreather/s: Azimuth Other Rebreather/s: Azimuth Join Date: Mar 2005 Location: Malta Posts: 104	Matt, I am also running a converted AZI. Why on earth did you not retain the original opv ? If you look at it closely it is a work of art and much better than the Apeks one. Also the original valve can be set precisely with the supplied pressure gauge.
(Offline)

10th October 2005, 10:19	#3 (permalink)
buggeriamold Custom Title Allowed! Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: Feb 2005 Location: australia Posts: 100	Matt, on my ck i run the opv fully closed, all gas gets vented by me, that way i know what is going on. Mark __________________ Well, it is cheap stuff and it comes almost from the local gardening store, but it works fine and it's very solid. We tried to destroy one by hitting it with a hammer... we succeeded but we really had to hit it hard.
(Offline)

10th October 2005, 10:25	#4 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Quote: (Originally Posted by buggeriamold) on my ck i run the opv fully closed, all gas gets vented by me, that way i know what is going on. Ditto. __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
(Offline)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode