Register free!
Search
 
     

Click for Weather
Reply
 
Thread Tools Display Modes
  #1  
Old 08-27-2012, 07:56 PM
extremecutter extremecutter is online now
LawnSite Member
 
Join Date: Oct 2011
Location: west michigan
Posts: 48
hydraulic value locating

Have a hydraulic system that has a value that won't shut off. Try to locate it by the blue print, nothing is were the blueprint is layed out. Any ideas to locate. If the systems has value boxes, they aren't visable.
Reply With Quote
  #2  
Old 08-27-2012, 08:38 PM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,949
Yes there is a method but it requires a valve locator.
Posted via Mobile Device
Reply With Quote
  #3  
Old 08-27-2012, 08:44 PM
Wet_Boots's Avatar
Wet_Boots Wet_Boots is online now
LawnSite Fanatic
 
Join Date: Mar 2005
Location: metro NYC
Posts: 40,039
There might be a severed control line
Reply With Quote
  #4  
Old 08-27-2012, 08:52 PM
Sprinkus's Avatar
Sprinkus Sprinkus is offline
LawnSite Bronze Member
 
Join Date: Dec 2008
Location: San Antonio, TX
Posts: 1,823
Metal detector might do it.
Can you tell where the ditch line is? Sometimes there are depressions where the ditches have settled and where the pits for the valves were dug.
Reply With Quote
  #5  
Old 08-27-2012, 09:12 PM
Waterlogged's Avatar
Waterlogged Waterlogged is offline
LawnSite Senior Member
 
Join Date: May 2009
Location: Texas
Posts: 498
First look for depressions and ditches, like Sprinkus said.
Here, I've had good results noticing different grasses and weeds growing where the valve depressions are. Even after many years of growth, the spot looks different. Look for any anomalies.

I'd be interested to know what 1idejim's method is for locating hydraulic valves with a locator. I've heard of people who have pushed piano wire in the black tube and traced it. I have not done that.

What I have done is to "pot-hole" and count control tubes. For example, if you know that you have five zones and you dig up five tubes, you know that all the valves are all ahead of you. I like to find a halfway mark. Guess. Keep digging and when you find there are four tubes in the hole, you know one valve is behind you. Keep going.

Also, Wet_Boots mentioned a cut tube. Before you start digging I would look for any fence post, planting, phone lines or anything like that. And/or any new digging.

Happy hunting.
__________________
www.eaztool.com
Reply With Quote
  #6  
Old 08-28-2012, 12:02 AM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,949
Quote:
Originally Posted by Waterlogged View Post
First look for depressions and ditches, like Sprinkus said.
Here, I've had good results noticing different grasses and weeds growing where the valve depressions are. Even after many years of growth, the spot looks different. Look for any anomalies.

I'd be interested to know what 1idejim's method is for locating hydraulic valves with a locator. I've heard of people who have pushed piano wire in the black tube and traced it. I have not done that.

What I have done is to "pot-hole" and count control tubes. For example, if you know that you have five zones and you dig up five tubes, you know that all the valves are all ahead of you. I like to find a halfway mark. Guess. Keep digging and when you find there are four tubes in the hole, you know one valve is behind you. Keep going.

Also, Wet_Boots mentioned a cut tube. Before you start digging I would look for any fence post, planting, phone lines or anything like that. And/or any new digging.

Happy hunting.
we discussed the method a couple years ago, i sent J from Mi the correct wire and they located a bunch of valves.
Posted via Mobile Device
Reply With Quote
  #7  
Old 08-27-2012, 09:14 PM
Mdirrigation Mdirrigation is offline
LawnSite Bronze Member
 
Join Date: Dec 2003
Location: Maryland
Posts: 1,405
I use to work on them up to 10 years ago , they are so old and difficult to get parts for i tell the customer its time for a new system.
Reply With Quote
  #8  
Old 08-27-2012, 09:33 PM
extremecutter extremecutter is online now
LawnSite Member
 
Join Date: Oct 2011
Location: west michigan
Posts: 48
going back tomorrow. going to try looking for ditch lines. no digging or trenching lately. system was instead in 85.
Reply With Quote
  #9  
Old 08-28-2012, 01:53 AM
cjohn2000's Avatar
cjohn2000 cjohn2000 is offline
LawnSite Senior Member
 
Join Date: Jun 2010
Location: Tacoma, WA
Posts: 473
Dowsing rods. May sound nuts but I have had some luck. I made a pair about 12" long with 5" handles out of 14AWG copper. I would see if I could locate the general area of the zone then metal detect that area looking for the metal in the valve.
Reply With Quote
  #10  
Old 08-28-2012, 08:50 AM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,949
Quote:
Originally Posted by cjohn2000 View Post
Dowsing rods. May sound nuts but I have had some luck. I made a pair about 12" long with 5" handles out of 14AWG copper. I would see if I could locate the general area of the zone then metal detect that area looking for the metal in the valve.
irrigation valves use stainless steel metallic parts, ferro-magnetic locators won't work. Tresure locators which locate non-ferrous metals usually don't work do to the extremely small footprint of the parts and the depth/soils mass.
if you choose to a metal detector you fall into the "even a blinde pig gets a peach now and then" catagory. it's more lvck than not.
Posted via Mobile Device
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump






Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 06:39 PM.

Page generated in 0.08487 seconds with 7 queries