when you’re using vacuum power moving water or compressing air
water or compressing air
water or compressing air chances are it’s being done with some
chances are it’s being done with some
chances are it’s being done with some type of a pump we’ll need one for future
type of a pump we’ll need one for future
type of a pump we’ll need one for future projects so in this video we’re building
projects so in this video we’re building
projects so in this video we’re building a PVC hand pump from scratch that will
a PVC hand pump from scratch that will
a PVC hand pump from scratch that will do all three
do all three
do all three [Music]
to start this project you’ll need these
to start this project you’ll need these PVC parts from your local hardware store
PVC parts from your local hardware store
PVC parts from your local hardware store the one-inch pipe will become the
the one-inch pipe will become the
the one-inch pipe will become the plunger piston and we can start working
plunger piston and we can start working
plunger piston and we can start working on that first you can see this one-inch
on that first you can see this one-inch
on that first you can see this one-inch pipe is a very close fit when pushed
pipe is a very close fit when pushed
pipe is a very close fit when pushed inside the larger tube there’s just a
inside the larger tube there’s just a
inside the larger tube there’s just a slight gap between the two but in just a
slight gap between the two but in just a
slight gap between the two but in just a minute
minute
minute they’ll be perfectly airtight I chose to
they’ll be perfectly airtight I chose to
they’ll be perfectly airtight I chose to use a few pieces of 2×4 to hold this
use a few pieces of 2×4 to hold this
use a few pieces of 2×4 to hold this piece in place over the blade of a table
piece in place over the blade of a table
piece in place over the blade of a table saw let’s measure out two marks from the
saw let’s measure out two marks from the
saw let’s measure out two marks from the end of the pipe at one inch and another
end of the pipe at one inch and another
end of the pipe at one inch and another at two inches you can see here that I’ve
at two inches you can see here that I’ve
at two inches you can see here that I’ve adjusted the blade so that when it’s
adjusted the blade so that when it’s
adjusted the blade so that when it’s cutting into the pipe it shouldn’t cut
cutting into the pipe it shouldn’t cut
cutting into the pipe it shouldn’t cut any deeper than halfway through the
any deeper than halfway through the
any deeper than halfway through the plastic at this point we can get the
plastic at this point we can get the
plastic at this point we can get the blade spinning and hold the pipe in
blade spinning and hold the pipe in
blade spinning and hold the pipe in place with one hand while using the
place with one hand while using the
place with one hand while using the other hand to carefully rotate the tube
other hand to carefully rotate the tube
other hand to carefully rotate the tube this should result in a little groove
this should result in a little groove
this should result in a little groove all the way around the pipe now let’s
all the way around the pipe now let’s
all the way around the pipe now let’s repeat that at the two inch mark as well
repeat that at the two inch mark as well
repeat that at the two inch mark as well and now we should have to clean and
and now we should have to clean and
and now we should have to clean and uniform grooves like these the grooves
uniform grooves like these the grooves
uniform grooves like these the grooves are cut so that we can see two rubber
are cut so that we can see two rubber
are cut so that we can see two rubber o-rings in place and when they’re fitted
o-rings in place and when they’re fitted
o-rings in place and when they’re fitted snug they should be just slightly higher
snug they should be just slightly higher
snug they should be just slightly higher than the surface of the tube while we’re
than the surface of the tube while we’re
than the surface of the tube while we’re here let’s seal this too with a little
here let’s seal this too with a little
here let’s seal this too with a little PVC glue and a 1-inch plug now the plug
PVC glue and a 1-inch plug now the plug
PVC glue and a 1-inch plug now the plug might be tight so just give it a few
might be tight so just give it a few
might be tight so just give it a few taps with a rubber mallet to encourage
taps with a rubber mallet to encourage
taps with a rubber mallet to encourage it all the way in now let’s clean up the
it all the way in now let’s clean up the
it all the way in now let’s clean up the piston by wiping away the excess glue
piston by wiping away the excess glue
piston by wiping away the excess glue and use a bit of sandpaper to smooth
and use a bit of sandpaper to smooth
and use a bit of sandpaper to smooth down the sides of the pipe I’m using 220
down the sides of the pipe I’m using 220
down the sides of the pipe I’m using 220 grit sandpaper and you can see it cleans
grit sandpaper and you can see it cleans
grit sandpaper and you can see it cleans up everything nicely and gives the
up everything nicely and gives the
up everything nicely and gives the piston a smooth finish now this piece of
piston a smooth finish now this piece of
piston a smooth finish now this piece of pipe only needs to be 26 inches long so
pipe only needs to be 26 inches long so
pipe only needs to be 26 inches long so we can cut to four and a half inch
we can cut to four and a half inch
we can cut to four and a half inch pieces from the top to create some
pieces from the top to create some
pieces from the top to create some handles that we’ll use later on I
handles that we’ll use later on I
handles that we’ll use later on I painted all the fittings and adapters
painted all the fittings and adapters
painted all the fittings and adapters black while the tubing got painted blue
black while the tubing got painted blue
black while the tubing got painted blue except for the piston of course now
except for the piston of course now
except for the piston of course now let’s go ahead and cement it together
let’s go ahead and cement it together
let’s go ahead and cement it together first we’ll need to glue the coupling to
first we’ll need to glue the coupling to
first we’ll need to glue the coupling to the bottom reducer bushing then glue the
the bottom reducer bushing then glue the
the bottom reducer bushing then glue the bigger tube into that making sure it
bigger tube into that making sure it
bigger tube into that making sure it pushes all the way to the bottom we can
pushes all the way to the bottom we can
pushes all the way to the bottom we can go ahead and cement the handle together
go ahead and cement the handle together
go ahead and cement the handle together but don’t attach it yet just set it to
but don’t attach it yet just set it to
but don’t attach it yet just set it to the side we need to insert the piston
the side we need to insert the piston
the side we need to insert the piston first so use plenty of lubricating jelly
first so use plenty of lubricating jelly
first so use plenty of lubricating jelly around the o-rings and the pieces should
around the o-rings and the pieces should
around the o-rings and the pieces should connect together with just a push and a
connect together with just a push and a
connect together with just a push and a twist finally we can cement the cap on
twist finally we can cement the cap on
twist finally we can cement the cap on top and the hydraulic piston is complete
top and the hydraulic piston is complete
top and the hydraulic piston is complete now if you’re wondering how the cap was
now if you’re wondering how the cap was
now if you’re wondering how the cap was made I
made I
made I took a regular slip cap and drilled a
took a regular slip cap and drilled a
took a regular slip cap and drilled a hole in the center with a 1 and 3/8 inch
hole in the center with a 1 and 3/8 inch
hole in the center with a 1 and 3/8 inch Forstner bit the number 320 oring fit
Forstner bit the number 320 oring fit
Forstner bit the number 320 oring fit nicely inside that and I used a little
nicely inside that and I used a little
nicely inside that and I used a little more lubricating jelly around the ring
more lubricating jelly around the ring
more lubricating jelly around the ring now you can see the piston sticks out
now you can see the piston sticks out
now you can see the piston sticks out just a couple of inches and this is the
just a couple of inches and this is the
just a couple of inches and this is the place where we’re gonna attach our
place where we’re gonna attach our
place where we’re gonna attach our handle when it’s glued on tight it
handle when it’s glued on tight it
handle when it’s glued on tight it should have just the smallest gap of
should have just the smallest gap of
should have just the smallest gap of clearance when piston bottoms out well
clearance when piston bottoms out well
clearance when piston bottoms out well now we have a piston let’s turn it into
now we have a piston let’s turn it into
now we have a piston let’s turn it into a pump to do that we’ll be using two of
a pump to do that we’ll be using two of
a pump to do that we’ll be using two of these one way check valves that were
these one way check valves that were
these one way check valves that were made in a previous project the threaded
made in a previous project the threaded
made in a previous project the threaded bushing at the bottom of the piston is
bushing at the bottom of the piston is
bushing at the bottom of the piston is designed to accept a 3/4 inch nipple and
designed to accept a 3/4 inch nipple and
designed to accept a 3/4 inch nipple and the threaded tee fitting screws onto
the threaded tee fitting screws onto
the threaded tee fitting screws onto that if you try this yourself make sure
that if you try this yourself make sure
that if you try this yourself make sure to use something like thread tape to
to use something like thread tape to
to use something like thread tape to ensure the connections end up watertight
ensure the connections end up watertight
ensure the connections end up watertight our two check valves can connect in line
our two check valves can connect in line
our two check valves can connect in line with the bottom of the tee and because
with the bottom of the tee and because
with the bottom of the tee and because they’re threaded we’ll have the
they’re threaded we’ll have the
they’re threaded we’ll have the convenient option of switching or
convenient option of switching or
convenient option of switching or replacing them any time we want at this
replacing them any time we want at this
replacing them any time we want at this point you should have a completely
point you should have a completely
point you should have a completely operational water pump ready to test out
operational water pump ready to test out
operational water pump ready to test out it’s very important that the valves
it’s very important that the valves
it’s very important that the valves point the right direction so that when
point the right direction so that when
point the right direction so that when the piston is pulled up the water flows
the piston is pulled up the water flows
the piston is pulled up the water flows in and when it’s pushed down it flows
in and when it’s pushed down it flows
in and when it’s pushed down it flows out the opposite side all right let’s
out the opposite side all right let’s
out the opposite side all right let’s see what this thing can do if we play
see what this thing can do if we play
see what this thing can do if we play something like a balloon over the
something like a balloon over the
something like a balloon over the outflow valve and begin to pump you can
outflow valve and begin to pump you can
outflow valve and begin to pump you can see the balloon blows up on every
see the balloon blows up on every
see the balloon blows up on every downward stroke if you try adding
downward stroke if you try adding
downward stroke if you try adding additional pipes of the valves you’ll be
additional pipes of the valves you’ll be
additional pipes of the valves you’ll be able to leverage the pump with your feet
able to leverage the pump with your feet
able to leverage the pump with your feet I tried putting balloons on each valve
I tried putting balloons on each valve
I tried putting balloons on each valve so you can see how every cycle sucks air
so you can see how every cycle sucks air
so you can see how every cycle sucks air from the red balloon and pumps it into
from the red balloon and pumps it into
from the red balloon and pumps it into the yellow when all the air gets used up
the yellow when all the air gets used up
the yellow when all the air gets used up the balloon gets sucked inside now this
the balloon gets sucked inside now this
the balloon gets sucked inside now this opens up the option to using the system
opens up the option to using the system
opens up the option to using the system as a vacuum pump and we can get a rough
as a vacuum pump and we can get a rough
as a vacuum pump and we can get a rough idea on how strong it is by blocking the
idea on how strong it is by blocking the
idea on how strong it is by blocking the valves from both directions this time
valves from both directions this time
valves from both directions this time when the piston is pulled back he
when the piston is pulled back he
when the piston is pulled back he creates a strong vacuum in the chamber
creates a strong vacuum in the chamber
creates a strong vacuum in the chamber which you can clearly see when we let go
which you can clearly see when we let go
which you can clearly see when we let go for more variety I tried converting this
for more variety I tried converting this
for more variety I tried converting this into a vertical pump and was able to
into a vertical pump and was able to
into a vertical pump and was able to pump 3 gallons of water in about a
pump 3 gallons of water in about a
pump 3 gallons of water in about a minute
minute
minute each cycle seems to pump just a little
each cycle seems to pump just a little
each cycle seems to pump just a little over two cups of water and I found that
over two cups of water and I found that
over two cups of water and I found that by leveraging the pump with my feet I
by leveraging the pump with my feet I
by leveraging the pump with my feet I could double the flow rate and move over
could double the flow rate and move over
could double the flow rate and move over five gallons a minute some additional
five gallons a minute some additional
five gallons a minute some additional features are that the handle can rotate
features are that the handle can rotate
features are that the handle can rotate a full 360 degrees and perhaps my
a full 360 degrees and perhaps my
a full 360 degrees and perhaps my favorite is how easily it comes apart
favorite is how easily it comes apart
favorite is how easily it comes apart for servicing if you need to get inside
for servicing if you need to get inside
for servicing if you need to get inside the pump just give the handle a sharp
the pump just give the handle a sharp
the pump just give the handle a sharp tug and the whole plunger comes right
tug and the whole plunger comes right
tug and the whole plunger comes right out this gives you easy access to clean
out this gives you easy access to clean
out this gives you easy access to clean it or add more lubrication if you need
it or add more lubrication if you need
it or add more lubrication if you need it well now you know how to make a
it well now you know how to make a
it well now you know how to make a simple PVC hand pump that can be used
simple PVC hand pump that can be used
simple PVC hand pump that can be used for compressing air pumping water or
for compressing air pumping water or
for compressing air pumping water or creating a vacuum if you like this
creating a vacuum if you like this
creating a vacuum if you like this project perhaps you’ll like some of my
project perhaps you’ll like some of my
project perhaps you’ll like some of my others check them out at the king of
others check them out at the king of
others check them out at the king of random calm
”
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