RO ASOV help

das75 · 04/05/2014, 09:59 AM

Simple but can't seem to figure out.

Been working for years now won't shut off. Found the check valve off the membrane housing leaking so replaced. Tested the AVOS and other I had by connecting directly to supply with a ball valve on output and seems to shut off (and least can't blow through it).

When I reconnect keep getting waste output even with ball valve directly off ASOV closed.

Supply is 60psi with TDS of 177, after membrane is 15 so realize my membrane needs replacing (on order) but some how could the membrane itself be the reason ASOV not working?

shifty51008 · 04/05/2014, 10:37 AM

I don't think the membrane could be the cause as the ASOV is connectected before the membrane. last time I had a problem with my ASOV not working right it was because of the check valve off the membrane but you changed that so I am not sure.

you could always pull the membrane out and run it like that and see if it shuts off.

das75 · 04/09/2014, 08:28 PM

frustration reaching a high, really need some help.

Without membrane, with new membrane won't shut off.

Have a couple of valves and tested this time using the output of installed valve to input of one under test. This way would also be confirming one-way check valve not leaking with higher pressure and when tried to blow through ASOV under test, couldn't.

Okay valve is working but thought maybe still leaking when install as can't hold the pressure coming off the pre-filters so connected up the air compressor and ASOV works perfect at 50psi (picture below is how was setup). Install, still seeing the stream of waste water.

Okay then, thought if can't push air through the one under test, let's just run the system with the output of the pre-filter to it. NOPE, won't shut off.

100% confidant everything has been connected properly as has the system working fine for years.

das75 · 04/11/2014, 03:37 PM

nobody?

das75 · 04/14/2014, 12:09 PM

getting tired of manually turning unit on and off, any ideas

shifty51008 · 04/14/2014, 02:18 PM

I would give Russ at Buckeyehydro a call, he will be able to narrow it down for ya.

Vinny Kreyling · 04/14/2014, 05:23 PM

Had the same problem, changed the ASOV & no worries any more.

das75 · 05/30/2014, 06:35 AM

so got my in-line check valves in the mail after a 6 wk wait, put one in and sure enough that was the problem

04/05/2014, 09:59 AM	#1
das75 Registered Member Join Date: Oct 2002 Location: Edmonton AB Posts: 2,269	RO ASOV help Simple but can't seem to figure out. Been working for years now won't shut off. Found the check valve off the membrane housing leaking so replaced. Tested the AVOS and other I had by connecting directly to supply with a ball valve on output and seems to shut off (and least can't blow through it). When I reconnect keep getting waste output even with ball valve directly off ASOV closed. Supply is 60psi with TDS of 177, after membrane is 15 so realize my membrane needs replacing (on order) but some how could the membrane itself be the reason ASOV not working? __________________ . Current Tank Info: 145g Starfire display (mixed reef) w/75g basement sump & 20g refugium, Barracuda return, Dart w/OM 4way CL, AI Hydras and Director.

04/05/2014, 10:37 AM	#2
shifty51008 12-5 Chiefs record Join Date: Mar 2010 Location: NW Iowa Posts: 10,134	I don't think the membrane could be the cause as the ASOV is connectected before the membrane. last time I had a problem with my ASOV not working right it was because of the check valve off the membrane but you changed that so I am not sure. you could always pull the membrane out and run it like that and see if it shuts off. __________________ 75 gal. mixed DT, 100 gal. sump, 50 gal. fuge, Clownfish breeder

04/09/2014, 08:28 PM	#3
das75 Registered Member Join Date: Oct 2002 Location: Edmonton AB Posts: 2,269	frustration reaching a high, really need some help. Without membrane, with new membrane won't shut off. Have a couple of valves and tested this time using the output of installed valve to input of one under test. This way would also be confirming one-way check valve not leaking with higher pressure and when tried to blow through ASOV under test, couldn't. Okay valve is working but thought maybe still leaking when install as can't hold the pressure coming off the pre-filters so connected up the air compressor and ASOV works perfect at 50psi (picture below is how was setup). Install, still seeing the stream of waste water. Okay then, thought if can't push air through the one under test, let's just run the system with the output of the pre-filter to it. NOPE, won't shut off. 100% confidant everything has been connected properly as has the system working fine for years. __________________ . Current Tank Info: 145g Starfire display (mixed reef) w/75g basement sump & 20g refugium, Barracuda return, Dart w/OM 4way CL, AI Hydras and Director.

04/11/2014, 03:37 PM	#4
das75 Registered Member Join Date: Oct 2002 Location: Edmonton AB Posts: 2,269	nobody? __________________ . Current Tank Info: 145g Starfire display (mixed reef) w/75g basement sump & 20g refugium, Barracuda return, Dart w/OM 4way CL, AI Hydras and Director.

04/14/2014, 12:09 PM	#5
das75 Registered Member Join Date: Oct 2002 Location: Edmonton AB Posts: 2,269	getting tired of manually turning unit on and off, any ideas __________________ . Current Tank Info: 145g Starfire display (mixed reef) w/75g basement sump & 20g refugium, Barracuda return, Dart w/OM 4way CL, AI Hydras and Director.

04/14/2014, 02:18 PM	#6
shifty51008 12-5 Chiefs record Join Date: Mar 2010 Location: NW Iowa Posts: 10,134	I would give Russ at Buckeyehydro a call, he will be able to narrow it down for ya. __________________ 75 gal. mixed DT, 100 gal. sump, 50 gal. fuge, Clownfish breeder

04/14/2014, 05:23 PM	#7
Vinny Kreyling Registered Member Join Date: Nov 2002 Location: Miller Place, NY Posts: 7,206	Had the same problem, changed the ASOV & no worries any more.

05/30/2014, 06:35 AM	#8
das75 Registered Member Join Date: Oct 2002 Location: Edmonton AB Posts: 2,269	so got my in-line check valves in the mail after a 6 wk wait, put one in and sure enough that was the problem __________________ . Current Tank Info: 145g Starfire display (mixed reef) w/75g basement sump & 20g refugium, Barracuda return, Dart w/OM 4way CL, AI Hydras and Director.