May 07 2020
01:11 AM Deejay: moin
03:53 PM Deejay: gn8
04:07 PM JT-Cave: Tom_L, some old line shaft driven wagon wheel spoke machines
04:23 PM unterhaus: supposed to freeze here tomorrow night and then again next week.
04:24 PM unterhaus: I guess that's why you can't have gardens this early in Pennsylvania
06:35 PM JT-Cave: Missouri either but I have 4' tall tomato plants to protect for the next week
08:28 PM ziper: can anyone suggest a pump suitable for seawater RO (pressure of 1000psi) with a flow rate of a couple gallon per hour? I'm not sure what types to look at
08:31 PM Tom_L: google came up with this: https://www.appliedmembranes.com/cat-pumps-for-seawater-high-pressure-applications.html
08:32 PM Tom_L: https://www.catpumps.com/reverse-osmosis-desalination-pumps
08:33 PM ziper: order of magnitude higher flow than what I am looking for. also they look suspiciously like pressure washing pumps
08:33 PM ziper: maybe I should just get the cheapest smallest pressure washer and mess with that
08:33 PM Tom_L: they have smaller ones
08:34 PM Tom_L: use the selector
08:35 PM Tom_L: maybe not as small as you want
08:35 PM Tom_L: .4 gpm
08:37 PM tiwake: ziper: don't want a stainless steel gear pump?
08:38 PM Tom_L: .1gpm but $$$
08:38 PM Tom_L: https://www.mistcooling.com/12-v-dc-1000-psi-pump.html
08:38 PM tiwake: ...that reminds me, I'd like to get a pump for a nice anodizing system... something to keep the water moving around
08:38 PM tiwake: acid water
08:39 PM Tom_L: i had a diaphram chemical pump but they pulse
08:39 PM Tom_L: air driven
08:39 PM tiwake: I don't think that matters really
08:39 PM ziper: put some stretchy hose on the output and a restricting orifice?
08:39 PM tiwake: noise kind of matters though
08:39 PM ziper: the hose will swell and buffer the pulses
08:40 PM Tom_L: somewhat
08:40 PM sync: tiwake: use an aquarium stone
08:40 PM tiwake: ..?
08:41 PM ziper: tiwake, does a "regular" gear pump go that high pressure?
08:41 PM Tom_L: https://www.mcmaster.com/chemical-diaphragm-pumps/
08:41 PM ziper: I had them in mind but my only experience is with engine oil pumps
08:41 PM tiwake: ziper: yeah... hydraulic pumps tend to be gear pumps
08:42 PM ziper: that would be a fun project, could make one
08:42 PM Tom_L: i wore out a gear pump with my application but the diaphram lasted
08:44 PM Tom_L: https://www.graco.com/us/en/in-plant-manufacturing/products/general-fluid-transfer/double-diaphragm-pumps.html?power-source=air
08:44 PM Tom_L: iirc mine was a graco
08:46 PM Tom_L: ziper, i doubt a gear pump would go to 1k psi
08:46 PM Tom_L: rotary vane might i dunno
09:21 PM unterhaus_: I had some hydraulic pumps that probably would have worked. Auger type, I think
09:22 PM unterhaus_: Might have been gear pumps. All I know is they weren't piston.
11:29 PM skunkworks: buster seems nice..