Hand pump

[Anonymous0919]

So I have been filtering by hand for a few years now and am thinking about buying a hand pump and bottle top filters to filter faster. I haven't really seen much on an appropriate psi to aim for but have heard if it goes too high it can crack the filter. Can anyone shed some light on this please?

 

[Matty]

Glass or plastic base? Glass takes way more pressure. Plastic tend to break. Glass media bottle with appropriate sized neck openin, be it 33 or 45mm. Depends on your bottle top. Never used plastic but I hear you gotta keep the vac low or risk losing gear through breakage.

 

[Matty]

Oh ya breaks the lower media bottle more so than the filter . Upper chamber being plastic is good to go as there is no vacuumed in it.

 

[TheWizard]

ive been using a hand vacuum pump bought on amazon
and these filters -- https://www.medical-and-lab-supplie...cup-complete-filter-units-250-ml-count-1.html
, ill be making a batch this weekend or Monday evening and ill take some notes on where i let the vacuum settle while filtering, i have cracked one on my first use. it doesn't take a ton of vacuum. depending on how much your making at once just have patience.

 

[vapor1]

The Wizard where did you let the vacuum settle at

 

[TheWizard]

i was going to take some notes on that when I get my next shipment of raws but I assume its been snagged by customs, the shipper is resending and it will be another 2-3 weeks man.

 

[TheMuscleMan]

I pump them to almost 25psi, I haven't had any break but I use glass bottles and bottle top filters.

Thanks
TMM

 

[TheWizard]

I pump them to almost 25psi, I haven't had any break but I use glass bottles and bottle top filters.

Thanks
TMM

i would assume you mean INHG as vaccum is not measured in PSI... Looked at my pump and when filtering with plastic kits i hold the vacuum right around 300inhg max. i have broken a nalgine kit before.

 

[TheMuscleMan]

Let me check my pump and see what the unit of measurement is. I know I pump it to just below the 25 on the gauge.

Thanks
TMM

 

[TheMuscleMan]

Ok my pump goes to 30 and the unit of measure is in.HG vac. In red it measures in kpa and those are negative numbers. So I pump mine to just below 25 in.HG vac. That is also -84 kpa. I am close to maxing the gauge out. I don't know if there is a multiplier that is to be applied to the numbers on the gauge, so could be 25 or 250, I just know to stay around there and any higher it will blow the filter out.

Thanks
TMM

 

[Yates84]

Run at around 12hg and you won’t break anything and still filter fast if you’re using the plastic bottles but do not store oils in these bottles! Haven’t had any issues with the glass bottles since I’ve been using them though.

 

[MotorCityMuscleMachine]

Run at around 12hg and you won’t break anything and still filter fast if you’re using the plastic bottles but do not store oils in these bottles! Haven’t had any issues with the glass bottles since I’ve been using them though.

Yeah, good advice, I believe the oil, n solvents would/could leach polymers from the plastic, and you don't want to be firing off gear loaded with polymers.., is this correct Yates Brother....?

MotorCity

 

[Yates84]

Yeah, good advice, I believe the oil, n solvents would/could leach polymers from the plastic, and you don't want to be firing off gear loaded with polymers.., is this correct Yates Brother....?

MotorCity

Yes and it will ruin your oil. Accidentally left some test e in one of these things and it eventually ate all the way through the plastic. Always store in class containers or get ready to fuk yourself up with some plasticized oil

 

[conductingchaos]

Ok my pump goes to 30 and the unit of measure is in.HG vac. In red it measures in kpa and those are negative numbers. So I pump mine to just below 25 in.HG vac. That is also -84 kpa. I am close to maxing the gauge out. I don't know if there is a multiplier that is to be applied to the numbers on the gauge, so could be 25 or 250, I just know to stay around there and any higher it will blow the filter out.

Thanks
TMM

Are you using a hand pump or electric? I would like to get an electric pump but am not sure how to control the pressure without an additional gauge / regulator like the one seen in this kit:

https://www.medical-and-lab-supplie...essories-kit-excludes-hand-pump.html?___SID=U

 

[TheMuscleMan]

Are you using a hand pump or electric? I would like to get an electric pump but am not sure how to control the pressure without an additional gauge / regulator like the one seen in this kit:

https://www.medical-and-lab-supplie...essories-kit-excludes-hand-pump.html?___SID=U

I use hand pumps.

Thanks
TMM