Reddit reviews Dynalon 312635 Water Jet/Faucet Aspirator Vacuum Pump
We found 2 Reddit comments about Dynalon 312635 Water Jet/Faucet Aspirator Vacuum Pump. Here are the top ones, ranked by their Reddit score.
Water flow-powered vacuum pump for siphoning liquid or evacuating gas in a variety of applicationsWater supply connects to R3/4 or R1/2 threaded hose fitting, or to a 10 to 12mm inside diameter (ID) flexible tube, requires 3.5 bar minimum supply pressureSiphon connects to 6 to 9mm ID flexible tube and generates up to 16mbar vacuumAnti-backflow check valve for safetyPolypropylene (PP) pump and fittings and fluoroelastomer (FKM) and polytetrafluoroethylene (PTFE) check valve for chemical resistance and durability
Hey guys as a heads up. In the lab if we make silicone we always degas the mixture before pouring. To degas just put the silicone after mixing into a closed container and pull vacuum. I think even a cheap aspirator will pull enough vacuum to work. Pull until the bubbles stop than you're good to go.
https://www.amazon.com/Dynalon-312635-Faucet-Aspirator-Vacuum/dp/B004AHL77E
https://www.amazon.com/Nalgene-6140-0010-Aspirator-Polypropylene-Threading/dp/B003OBYNBO
Both look promising. Google degassing silicone for more it's a common technique in soft litho.
Edit: For a chamber just get a plastic dessicator. They aren't that expensive : https://www.amazon.com/United-Scientific-55204-Polypropylene-Polycarbonate/dp/B00ES3GPMM
Edit2: Cus degassing silicone just looks so pretty : https://www.youtube.com/watch?v=bbSvzD8g_S0
Edit3: Decent part combo for degassing
https://www.amazon.com/Stainless-Chamber-Urethanes-Silicones-Epoxies/dp/B00KSWL29I/
https://www.amazon.com/Single-Stage-Rotary-Economy-Vacuum-Refrigerant/dp/B012CFTYX4/ref=pd_bxgy_236_img_2?ie=UTF8&refRID=1N0WKYM5MHVXTF9FVB8K
Remember keep the vacuum so that it slowly degasses you do not want it to bubble over and all into your chamber.
Good vacuum, fast, cheap. Pick any two.
To meet your criteria this one linked below is under $50, will pull a better vacuum than most mechanical pumps, but very slow by comparison. Also wastes a lot of water. Probably not suitable for the task.
Lowest priced practical pumps will be Harbor Freight or local equivalent starting at $100 and more like $250 for anything over 4 CFM. I get them over Craigslist for sub-$100 (7CFM in that case). The decision on CFM is a factor of vacuum chamber volume and silicone working time.
Good luck with that search!
Aspirator vacuum pump