Hunter SRV PGV Valve Diaphragm Replacement

let me show you how to replace the diaphragm on a hunter s RV valve these valves have got four of them these valves are about seven years old this one actually failed on me failed open so the head one water zone that didn't shut off so I've already replaced that but I decided since they're all the same age and there's you know seven years now that I'm going to go ahead and replace all four of them here is the one that failed let me see if I can show you this here's the diaphragm out and you can hopefully see that it's torn you can see there that the diaphragm tore right there on the edge and if you hold it up you know to a light source you can see the light coming through it here's the second one that I've replaced and this one actually has a bunch of little rocks embedded into the rubber seat here so makes me wonder if I shouldn't get a at least a debris filter in front of this system so the way this system is these RS RV valves that i've got i'm going to zoom in here a little bit see if i can get a little closer here are the replacements that I bought the pgv replacement diaphragm which is the diaphragm for the PGV and the SRV valves looking at the PG v valves a picture of them it looks like they look they look identical except they have a bleeder valve on the top of them so I just picked these up at Home Depot I'm sure the most places have them they have a nice cut a little zipper on the top and just pull that off a resealable bag not sure why I'm not going to not going to reuse the old ones cost little under $5 at home improvement stores okay the first thing you're going to want to do is locate your shut off valves here in Phoenix everything's exposed so my valves are all right here out in the open they're not inside of a box in the ground you're going to have to find what you've got there typical quarter turn valves I've actually got a valve before and after the pressure regulator on this drip system so you just turn these things a quarter turn until they're perpendicular to the flow of the water shut the water off now we can work on the valves for this particular event I don't really need to the way this system is wired there's enough slack in these wires that I can actually unscrew the solenoid without having to disconnect any wiring I could actually just turn that back it out let the wires just twist hold it in that position and then put it back in and untwist it it's probably not a bad idea I don't need to in this situation even take this apart and look at it but probably not a bad idea to just check this check this rubber gasket here the on the plunger make sure the plunger the plunger actually pulls up when it's activated it doesn't move much just a little bit just enough to lift that off the seat just kind of check that make sure there's nothing there no rocks or debris in there also gives that thing a chance to you might be able to see the water squirting out of that alright so but for my purposes I'm just going to set that aside I'm going to go ahead and leave that off for my purposes I just need to unscrew the top there are four screws that hold this what do they call this the bonnet four screws on this top there's actually a pretty good video on youtube from Hunter or at least a hunter dealer that explains how these valves work what the operation is of those so I'm not going to go through a bunch of that because I won't be able to do it as well as they did but if you want to understand how this diaphragm and solenoid operate the valve there actually there actually are a couple of good videos on YouTube for that I'm going to run these screws back out they're not they're very coarse threads so they come up pretty quickly and then I like to keep them in that same orientation so when I set them aside I'm going to set them aside in the same order that I brought them out because they're metal screws coarse metal screws going into a plastic housing I don't really want to cut new threads when I put them back in now that I've got all the screws out it's just a matter of rocking this bonnet a little bit to remove it comes right out once it's out go ahead and visually inspect it if you've removed the solenoid so you can actually one of the advantages of doing that is you can actually pull this out and take a look at it they talked about you know running a wire through some of these things you can actually blow through them and see in there and enough I'll be able to pick that up on the camera but so it's a good idea look in there check that seat it's a metal seat in there that the plunger seals against make sure there's no debris in there you can certainly just take the hose I typically do is just kind of I've got a hose bib right here I'll just kind of rinse that out make sure there's nothing in there I can see through there to see that there that this the exhaust port here I can see that that is clear through and I can also look through the seat I can blow through it I can look through it and I can see that there's there's a light coming through there so that's good make sure there's no debris kind of around the edges just kind of check the condition of that this thing is keyed so there's no real concern about when you set it down how it came out the can see how well you can see that here on camera the diaphragm and the wires out of the way the diaphragm is right here and it's let's see how stuck this one is there's a little as part of this diaphragm there's a little kind of a rubber tube that's attached to the end of it that's for that exhaust port that's what seals that in the housing that's a good thing to actually kind of grab a hold of because it kind of gives you a little little area to grab you just kind of peel it up there's nothing they're typically kind of stuck down there because they've been in there for a while but they do just kind of peel up and lift out this one just got a few little rocks there on the seal then there is a white ring which tends to kind of collect a rubber from the diaphragm as you kind of just take a fingernail and scrape around that and kind of clean that up kind of smooth it up without that surface paper towel on hand to kind of wipe that now what I will typically do is turn the water back on just for a second and just kind of blow out that will make sure I blow out any kind of any kind of debris that might be down inside that housing grab my new go ahead and put this the white ring back in let's see obviously the you can kind of tell there's a the flat side goes down the end of the contoured edge with the rubber still stuck to it as the top just press that back down in there I'm going to take my new rubber gasket and I'm going to kind of rinse it off make sure I don't have anything on my fingers and even with rocks or dirt on my fingers check that out it certainly matches now the little tube that's attached to it is going to go on this outlet side you'll see the little hole for it just drops in presses into place make sure it's down and even I did have one of these when I pulled it out that diaphragm stayed attached to the to the bottom it came out stuck to this that was actually a little harder to pull off then then pulling them out of there but I did it if you bring that up and the diaphragms attached to the bottom of this it's the same thing you're just going to have it it's going to look like this when you pull it out and you just kind of start working it you've actually got something to grab ahold of at that point start working and pull it loose all right so bonnet goes back on have my four screws I'm going to just set them in by hand that's wires out of the way what I'm trying to feel for is that they're starting there the thread easily they're not trying to cut a new set of threads out over I don't want to cut a new set of threads when I run these screws back in because this is a plastic housing and every time you do that you know just kind of weakens the plastic threads that are in the housing so it should drop in fairly easily and if it doesn't kind of back the screws out start it over again that one I think I actually did what I just talked about not doing so there you go hopefully if these lasted seven years and I get another seven years out of them those housings will be fourteen years old you'll see what kind of shape they're in at that point so run the four screws back down if you want to you can probably do a cross when you get to tightening them down you can probably do kind of cross pattern with them treat them like a like a cylinder-head or something like that but there's probably no need to really crank them down I just snug them up you've got a rubber gasket in there sealing that that one certainly did that's what happens when you're rushing okay so I certainly did cut that one but all right got that in there now I've got my solenoid which I've just set aside and left it twisted checking for debris just going to screw that back in it's given me a hard time too there we go don't cross her that one alright now with that screwed all the way in and tight and I turn the water back on here I should get it may take a couple of times to get the air out of the system and get things fully functional but once you've got the water back on and everything reassembled if you start to unscrew one of these solenoids it lifts it up off the seat you can actually hear it you can actually hear the water start to run through it it's it lifts it up this off the seat just like the piano and the plunger activates and pulls it up you start to back it out you can hear it and kind of feel it start the water start to flow and then when you screw it back in its not making a good sound for my example but you'll actually hear you'll hear the valve open and when you turn the back you'll hear it closed so you can pretty much know that the system is working that the valve was working that the diaphragm is in there and it's doing its job and you can check you to the valve without even having to go out and look at it look at the water now obviously you want to go now and either turn on there or turn on with the timer system and go check the check the drips make sure that they're turning on an off button that's the basics of changing out that diagram I'm gonna go ahead and just do this other one first I'm gonna turn the water off because that might be a good idea it's nice to have my valve right here I'm gonna go ahead and hold this last one just see if we have any surprises little bonus here getting dirt on my hands and I don't want that dirt to get into that in the system this one's a little close to the edge just make it a little more challenging and no I'm not left-handed tell I didn't rinse out this box before I started when I knew I had to do a repair actually took the hose and rinsed off the top of all these and kind of cut all the dirt cobwebs all that off the top of them so I could work on on the next day let's see do this fairly quickly yeah okay so that guy came out looks good rinse this off here cram here let's pull this guy out of there and that one next brought the rot the seat up there with it ah not bad a little bit of a little bit of junk there these ones are all working so I know that they're not torn I just want to go ahead and replace them so I don't have to deal with them again in the next few months sir these other zones only we only run once a week that zone that failed that runs once once a day during the winter and twice a day during the summer that's for the garden so the other ones all the other zones I just run once a week so they do get that one zone does get a lot more a lot more use all right I'm gonna turn on the water wash it out maybe ok put my things out of line but my wife ring back in got my new coming to the diaphragm drop that back in line it up drop it in the wire doesn't want to stay out of the way I bought it stat off threw it thing looks good there see how I did for this has always got to be one that wants to give you a hard time there we go yeah that feels right so as you can see the whole process is just actually doesn't take that long it's fairly quick repair once you know what you what you're doing weird you need to do before you I need to go about it you can actually bang this out and you know five or ten minutes all right so everybody's snugged in check this plunger looks okay I'm sure there's no junk on the threads throughout that guy back in there turn the water back on pressure relief valve like some it's also a vacuum breaker so it will it'll spew a little bit sometimes there we go and you heard it actually shut off filled the pressure and then shut off just like it's supposed to turn it back on there it goes and here the air going through the line and off on and off good to go it's all I need to do now is put my cover back on and I am done

Channel: phostenix

Views: 128,417

Keywords: irrigation drip system repair

Id: lxCriIWnRcU

Length: 18min 32sec (1112 seconds)

Published: Tue Jun 10 2014