Im wondering if anyone knows of some form of flow meter or control to accurately control the speed of resin infusion.
I like to infuse my parts very slow to get a better quality infusion and currently we do this by restricting the inlet pipe with a clamp and measuring the flow by weighing the resin pot. It works but takes some watching and adjusting to keep the flow rate the same.
Ideally I would like something that would deliver an accurate amount of resin to the mould over a period of time. Im working with 1 litre per hour flow.
Thanks
Google JHM Technologies. Get the phone number, call and speak with John Moore. This guy has invented equipment that you can control the speed, temperature, timing … everything. He’s probably going to answer the phone when you call. Like some of the guys here, he’s a living encyclopedia on this. Have questions ready, he has answers.
Hi
You can get a vacuum regulator from SMC
Like. http://www.ebay.com/itm/SMC-VACUUM-REGULATOR-IRV3000-IRV3000-N03G-NIB-IRV3000-N03-/380605442975?pt=BI_Control_Systems_PLCs&hash=item589dda2b9f
Or an IRV2000
Air tech also have one Around $130
Connect at the vacuum pump to control your vacuum flow
Easy way and not expensive
By the way I am sure Herman have what you need in Europe .
Also easycomposites in England have one
Lol, Herman! You’re in Europe?! Never noticed. If you ever come to Manhattan let me know! I’ll show you a night out you’ll never forget!
Yep, I am in Europe. And English is not my native language…
I think my English is not too bad, but I am still wrestling with your imperial units. They drive me crazy at times… 
In response to the original question:
You could create systems yourself, using a dialytic pump to get the desired resin flow.
As you can see the RPM of the vane is determining the resin flow. These pumps are way more accurate than needed for composites. The good thing about them is that none of the moving parts is in contact with (mixed) resin. You can use a piece of silicone tube, or perhaps even PU tube, and dispose of it.
Other options are using machines like Composite Integration (UK). These allow for a set pressure at the nozzle of the machine, but I am sure it is also possible to setup a resin rate per hour. These machines also do the mixing, so you are always injecting fresh resin, and you can run the machine unattended.
im very much the amateur to carbon having only played about in my shed for a year or so but wouldn’t the simplest way be to use a slimmer inlet tube from the resin to the piece!?
im only making small items so I use 6mm ID(internal diameter) tube and it does ok… maybe a little quick but its the easiest for me to get.
I tried 10mm ID once and the resin rushed into the item almost immediately… so if I wanted to slow down the flow rate without spending too much on fancy machinery I would opt for a selection of smaller ID inlet tubes and spend some trial and error till I found the one that gave the best rate using your weighing technique!
Thanks for the suggestions. Herman the Dialytic pump sounds exactly what Im looking for. Any idea where I could find one?