Help needed with injector

Hi,

thanks but, yes, tried before at lower pressures, but did not work either.

Cheers

Elwood

Have you checked the hole through the clack valve to boiler is clear ,also is the ptfe insert still in one piece and not blocking the passage or the valve tap is in the shut position?

Kev

Hi Kev,

thanks, but, yes it was (and I guess) still is ok, and i can blow air into the boiler, so steam into the boiler also should not be a problem. Means both insert is ok and the mark I put on the valve spindle is the right way around   .

Thanks

Cheers

Elwood

Hi all,

Just to let you know after 269 days since first steaming today I finally got the injector to work.    

Last weekend Lynn posted a video on Crystal‘s end of steaming. I noticed that on Crystal the pressure slowly drops while the injector works, while on Pied Piper as soon as you open the injector globe valve the pressure drops considerably. We discussed that and she suggested to look for a restriction between boiler and steam head. When I fed water into the boiler to steam head pipe the water only slowly dribbled into the boiler. I found that the elbow at the boiler was bad, i.e. there was only a small bore instead of full diameter, which you can only see with a torchlight down the elbow.  


Before  


After  

After drilling both sides with a 6,5mm drill to open it up, now there is no restriction anymore and the injector is fed with full boiler pressure instead of being fed only with reduced pressure due to restriction (orifice) in the elbow.

In hindsight it was easy to notice and I should have been able to diagnose it quicker, but then again in hindsight EVERYTHING is easy. Anyways it‘s working now, which is the main issue. Lession learned.  

For all of you still at assembly, it is a good thing to doublecheck pipes , connectors and elbows before mounting. The access to the elbow was very easy when I mounted it back then but now with the crankshaft in place it is a job I do not want to do again, the space for to get to the elbow is very limited, to say the least.

For all of you who have made valuable suggestion, thanks a lot, much appreciated.

Cheers & Stay Safe

Elwood

Air leaks on the suction side of the injector will stop it from picking up.
I open the water valve fully - I replaced the injector water valve with one from LSM.
Open the steam valve a full turn - I replaced the valve with one from R.A. Barker
The injector starts to pick up but splutters, close the water valve a little then open it until the injector picks up, then once it starts feeding open the steam valve a little more.

https://youtu.be/TArXl0g1cxA

The Youtube link above shows how a properly engineered injector will lift water AND operate even when hot.