Reply by Jim Thompson June 10, 20152015-06-10
On Wed, 10 Jun 2015 13:46:46 -0400, ehsjr <ehsjr@mverizon.net> wrote:

>On 6/9/2015 11:15 AM, Jim Thompson wrote: > ><snip> > >> Here's a video that demonstrates how a Rainbird valve works... >> >> <https://vimeo.com/119085959> >> >> ...Jim Thompson >> > >Good info! > >Ed
Yep. I haven't repaired one myself in a while, but I did remember that differential pressure game... uses the water pressure as the source of force to operate the valve... thus the 28VAC power required from the controller is negligible. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by ehsjr June 10, 20152015-06-10
On 6/9/2015 11:15 AM, Jim Thompson wrote:

<snip>

> Here's a video that demonstrates how a Rainbird valve works... > > <https://vimeo.com/119085959> > > ...Jim Thompson >
Good info! Ed
Reply by June 9, 20152015-06-09
On Tuesday, 9 June 2015 17:30:20 UTC+1, Jim Thompson  wrote:
> On Tue, 9 Jun 2015 09:21:20 -0700 (PDT), nt wrote: > >On Tuesday, 9 June 2015 02:12:18 UTC+1, mkr5000 wrote:
> >> I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). > >> > >> Does the chatter go away with water pressure? I just bench tested it dry. THANKS > > > >Stuff like that used to be all 240v, no transformer.
> Where? That certainly wouldn't meet US safety codes.
No, of course. There was also no rcd/gfci and no equipotential bonding. Here in UK in the 70s. The water spray was all over the (insulated) mains flex feeding it. NT
Reply by Jim Thompson June 9, 20152015-06-09
On Tue, 9 Jun 2015 09:21:20 -0700 (PDT), tabbypurr@gmail.com wrote:

>On Tuesday, 9 June 2015 02:12:18 UTC+1, mkr5000 wrote: >> I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). >> >> Does the chatter go away with water pressure? I just bench tested it dry. THANKS > >Stuff like that used to be all 240v, no transformer. > > >NT
Where? That certainly wouldn't meet US safety codes. ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by June 9, 20152015-06-09
On Tuesday, 9 June 2015 02:12:18 UTC+1, mkr5000  wrote:
> I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). > > Does the chatter go away with water pressure? I just bench tested it dry. THANKS
Stuff like that used to be all 240v, no transformer. NT
Reply by mkr5000 June 9, 20152015-06-09
On Tuesday, June 9, 2015 at 11:15:16 AM UTC-4, Jim Thompson wrote:
> On Tue, 9 Jun 2015 07:19:22 -0700 (PDT), mkr5000 <mikerbgr@gmail.com> > wrote: > > >On Monday, June 8, 2015 at 9:12:18 PM UTC-4, mkr5000 wrote: > >> I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). > >> > >> Does the chatter go away with water pressure? I just bench tested it dry. THANKS > > > >By the way -- googled delta pressure to learn about it -- out to lunch on whatever that is. > > Here's a video that demonstrates how a Rainbird valve works... > > <https://vimeo.com/119085959> > > ...Jim Thompson > -- > | James E.Thompson | mens | > | Analog Innovations | et | > | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | > | San Tan Valley, AZ 85142 Skype: skypeanalog | | > | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | > | E-mail Icon at http://www.analog-innovations.com | 1962 | > > I love to cook with wine. Sometimes I even put it in the food.
Don't know why I didn't run into that video when i was searching -- yes, it looks like it needs water in the solenoid -- I bet it's that plunger that's making the chatter and it's the water that keeps it quiet. Thanks.
Reply by Jim Thompson June 9, 20152015-06-09
On Tue, 9 Jun 2015 07:19:22 -0700 (PDT), mkr5000 <mikerbgr@gmail.com>
wrote:

>On Monday, June 8, 2015 at 9:12:18 PM UTC-4, mkr5000 wrote: >> I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). >> >> Does the chatter go away with water pressure? I just bench tested it dry. THANKS > >By the way -- googled delta pressure to learn about it -- out to lunch on whatever that is.
Here's a video that demonstrates how a Rainbird valve works... <https://vimeo.com/119085959> ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by Jim Thompson June 9, 20152015-06-09
On Tue, 9 Jun 2015 07:16:47 -0700 (PDT), mkr5000 <mikerbgr@gmail.com>
wrote:

>On Monday, June 8, 2015 at 10:05:29 PM UTC-4, Jim Thompson wrote: >> On Mon, 8 Jun 2015 18:12:11 -0700 (PDT), mkr5000 <mikerbgr@gmail.com> >> wrote: >> >> >I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). >> > >> >Does the chatter go away with water pressure? I just bench tested it dry. THANKS >> >> The valve operates on delta-pressure... the control voltage only >> operates a AIR needle-valve which then operates the water valve. >> >> ...Jim Thompson >> -- >> | James E.Thompson | mens | >> | Analog Innovations | et | >> | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | >> | San Tan Valley, AZ 85142 Skype: skypeanalog | | >> | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | >> | E-mail Icon at http://www.analog-innovations.com | 1962 | >> >> I love to cook with wine. Sometimes I even put it in the food. > >Thanks Jim -- so is the chatter when it's dry and not connected to water to be expected? I'll assume these need a continuous 24vac to stay open rather than a pulse? It's a Rainbird CP075 > >http://www.homedepot.com/p/Rain-Bird-3-4-in-FPT-In-Line-Valve-CP075/202078357
I don't know about the chatter... it's been years since I did it my self... my yard guy does all that now ;-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
Reply by mkr5000 June 9, 20152015-06-09
On Monday, June 8, 2015 at 9:12:18 PM UTC-4, mkr5000 wrote:
> I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). > > Does the chatter go away with water pressure? I just bench tested it dry. THANKS
By the way -- googled delta pressure to learn about it -- out to lunch on whatever that is.
Reply by mkr5000 June 9, 20152015-06-09
On Monday, June 8, 2015 at 10:05:29 PM UTC-4, Jim Thompson wrote:
> On Mon, 8 Jun 2015 18:12:11 -0700 (PDT), mkr5000 <mikerbgr@gmail.com> > wrote: > > >I know it's off topic a bit but this is my go to group for real answers. Have any of you guys messed with inline irrigation valves? I never have and have a new Rainbird valve that needs 24vac so I simply connected it to a 24vac (20va) control transformer I had and the solenoid chatters like crazy, so quickly disconnected it. (Usually when I hear chatter it means a need for DC but these things run on AC). > > > >Does the chatter go away with water pressure? I just bench tested it dry. THANKS > > The valve operates on delta-pressure... the control voltage only > operates a AIR needle-valve which then operates the water valve. > > ...Jim Thompson > -- > | James E.Thompson | mens | > | Analog Innovations | et | > | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | > | San Tan Valley, AZ 85142 Skype: skypeanalog | | > | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | > | E-mail Icon at http://www.analog-innovations.com | 1962 | > > I love to cook with wine. Sometimes I even put it in the food.
Thanks Jim -- so is the chatter when it's dry and not connected to water to be expected? I'll assume these need a continuous 24vac to stay open rather than a pulse? It's a Rainbird CP075 http://www.homedepot.com/p/Rain-Bird-3-4-in-FPT-In-Line-Valve-CP075/202078357