MarkS
Premium Member
I am 100% certain that this has been posted before, but I haven't seen the thread and figured it could be usefull.
These are the three main parts you'll need. On the right is the ballvalve to control the air flow into the injector. In the middle is the housing. It's called an expansion coupling. Home Depot sells these for about $4.15. You'll need the 1" size. On the left is the Beckett injector.
This is the Beckett. It comes with two gromets. You'll need to keep the one on the top right. The one on the top left needs to be discarded. The two o-rings (7/8" ID) are not needed and do not come with the Beckett, but I find them usefull. More on this later.
This is the Beckett assembled. Notice the orientation. Up is the top. This is important. The two o-rings help keep the Beckett together and act as spacers in the housing. The injector will work without these.
This is the ballvalve. You can get these at Home Depot. The threaded end is too long and needs to be cut down to 1/4" long. The top one is just out of the package and the bottom one is modified. The threads are 1/4" NPT and you'll need a 1/4" NPT pipe tap.
Here I drilled the 7/16" hole for the tap. I drilled it a little too close to the top. You can see where the drill cut into the little plastic lip. This will not hurt the housing, but the top of the hole should be about 1/8" below this lip. I had to grind the lip down to install the ballvalve.
Here is the hole being tapped.
Wrap the modified ballvalve's threads with teflon tape and screw it into the tapped hole.
In order to use the housing, you'll need to glue in a 1" length of 1" PVC pipe so you can attach a fitting. However, you must be carefull how far you insert it. The Beckett will not fit into the pipe, so install the Beckett into the top, insert the pipe and mark where it bottoms out at. Remove the Beckett and glue the pipe in, only inserting it to the mark.
Here is the top with the Beckett and a 90Ã"šÃ‚° ell. I actually will not be using the ell, but included it here for illustration. I would recommend putting a 1" union between the housing and any fitting you choose to use. This is what I will end up doing. It will make accessing the inside of the housing much easier for cleaning.
And here is the completed housing. I only need three more...
This is amazingly simple and cheap. Not counting the tools, I spent less than $20 for the housing. The ball valve was $7, the Beckett was $4 on eBay and the expansion coupling was $4.15. I had the misc. fittings laying around.
These are the three main parts you'll need. On the right is the ballvalve to control the air flow into the injector. In the middle is the housing. It's called an expansion coupling. Home Depot sells these for about $4.15. You'll need the 1" size. On the left is the Beckett injector.
This is the Beckett. It comes with two gromets. You'll need to keep the one on the top right. The one on the top left needs to be discarded. The two o-rings (7/8" ID) are not needed and do not come with the Beckett, but I find them usefull. More on this later.
This is the Beckett assembled. Notice the orientation. Up is the top. This is important. The two o-rings help keep the Beckett together and act as spacers in the housing. The injector will work without these.
This is the ballvalve. You can get these at Home Depot. The threaded end is too long and needs to be cut down to 1/4" long. The top one is just out of the package and the bottom one is modified. The threads are 1/4" NPT and you'll need a 1/4" NPT pipe tap.
Here I drilled the 7/16" hole for the tap. I drilled it a little too close to the top. You can see where the drill cut into the little plastic lip. This will not hurt the housing, but the top of the hole should be about 1/8" below this lip. I had to grind the lip down to install the ballvalve.
Here is the hole being tapped.
Wrap the modified ballvalve's threads with teflon tape and screw it into the tapped hole.
In order to use the housing, you'll need to glue in a 1" length of 1" PVC pipe so you can attach a fitting. However, you must be carefull how far you insert it. The Beckett will not fit into the pipe, so install the Beckett into the top, insert the pipe and mark where it bottoms out at. Remove the Beckett and glue the pipe in, only inserting it to the mark.
Here is the top with the Beckett and a 90Ã"šÃ‚° ell. I actually will not be using the ell, but included it here for illustration. I would recommend putting a 1" union between the housing and any fitting you choose to use. This is what I will end up doing. It will make accessing the inside of the housing much easier for cleaning.
And here is the completed housing. I only need three more...
This is amazingly simple and cheap. Not counting the tools, I spent less than $20 for the housing. The ball valve was $7, the Beckett was $4 on eBay and the expansion coupling was $4.15. I had the misc. fittings laying around.
