How To Make a One-Way Check Valve – For Cheap!!

a check valve is an amazing little

a check valve is an amazing little device that lets a liquid or a gas flow

device that lets a liquid or a gas flow

device that lets a liquid or a gas flow one way only we’ll need something to

one way only we’ll need something to

one way only we’ll need something to make a low cost water pump but buying

make a low cost water pump but buying

make a low cost water pump but buying them can be a little pricey so in this

them can be a little pricey so in this

them can be a little pricey so in this project we’ll be making our own out of

project we’ll be making our own out of

project we’ll be making our own out of common materials and for less than a

common materials and for less than a

common materials and for less than a dollar

for this project I’m using a

for this project I’m using a three-quarter inch male PVC slip adapter

three-quarter inch male PVC slip adapter

three-quarter inch male PVC slip adapter 3/4 inch tubing a three-quarter inch

3/4 inch tubing a three-quarter inch

3/4 inch tubing a three-quarter inch plastic ball and an o-ring I chose this

plastic ball and an o-ring I chose this

plastic ball and an o-ring I chose this adapter because there’s a little ledge

adapter because there’s a little ledge

adapter because there’s a little ledge on the inside where the o-ring can sit

on the inside where the o-ring can sit

on the inside where the o-ring can sit and it should look like this

and it should look like this

and it should look like this the ball needs to be large enough that

the ball needs to be large enough that

the ball needs to be large enough that it won’t push through the throat but

it won’t push through the throat but

it won’t push through the throat but small enough that it doesn’t touch the

small enough that it doesn’t touch the

small enough that it doesn’t touch the sides attaching the tube at this point

sides attaching the tube at this point

sides attaching the tube at this point won’t really do any good because the

won’t really do any good because the

won’t really do any good because the ball will roll right out we need a way

ball will roll right out we need a way

ball will roll right out we need a way to secure it in position so let’s make a

to secure it in position so let’s make a

to secure it in position so let’s make a mark on our tube 5/8 of an inch from the

mark on our tube 5/8 of an inch from the

mark on our tube 5/8 of an inch from the bottom and use a sixteenth inch bit to

bottom and use a sixteenth inch bit to

bottom and use a sixteenth inch bit to drill a small hole in the tube

drill a small hole in the tube

drill a small hole in the tube continuing right on through the other

continuing right on through the other

continuing right on through the other side now you’ll need a strong piece of

side now you’ll need a strong piece of

side now you’ll need a strong piece of metal like a nail or a thick paper clip

metal like a nail or a thick paper clip

metal like a nail or a thick paper clip I’m using one of these Brad nails that

I’m using one of these Brad nails that

I’m using one of these Brad nails that go to my nail gun whatever you use it

go to my nail gun whatever you use it

go to my nail gun whatever you use it needs to be strong and long enough to

needs to be strong and long enough to

needs to be strong and long enough to push all the way through the to the ends

push all the way through the to the ends

push all the way through the to the ends of the nail will need to be flush with

of the nail will need to be flush with

of the nail will need to be flush with the sides of the pipe so we can go ahead

the sides of the pipe so we can go ahead

the sides of the pipe so we can go ahead and clip the end with the nail head on

and clip the end with the nail head on

and clip the end with the nail head on it and now we’ve got ourselves a

it and now we’ve got ourselves a

it and now we’ve got ourselves a retaining bar that’s perfectly flush on

retaining bar that’s perfectly flush on

retaining bar that’s perfectly flush on both sides the next step is to prime our

both sides the next step is to prime our

both sides the next step is to prime our connections and place the o-ring in

connections and place the o-ring in

connections and place the o-ring in place inside the adapter now let’s drop

place inside the adapter now let’s drop

place inside the adapter now let’s drop in the ball and double check that

in the ball and double check that

in the ball and double check that everything seals properly PVC cement is

everything seals properly PVC cement is

everything seals properly PVC cement is added to the pipe making sure it covers

added to the pipe making sure it covers

added to the pipe making sure it covers the holes where the nail is set then the

the holes where the nail is set then the

the holes where the nail is set then the pipe is pushed down to the point where

pipe is pushed down to the point where

pipe is pushed down to the point where the holes dip just below the rim of the

the holes dip just below the rim of the

the holes dip just below the rim of the adapter so when the glue sets this

adapter so when the glue sets this

adapter so when the glue sets this connection will be completely airtight

connection will be completely airtight

connection will be completely airtight you can build this valve into any length

you can build this valve into any length

you can build this valve into any length of PVC pipe you want but I’m using this

of PVC pipe you want but I’m using this

of PVC pipe you want but I’m using this one and a half inch piece because it’s

one and a half inch piece because it’s

one and a half inch piece because it’s just long enough to accept another

just long enough to accept another

just long enough to accept another adapter when it’s glued and pushed

adapter when it’s glued and pushed

adapter when it’s glued and pushed together it makes a nice little compact

together it makes a nice little compact

together it makes a nice little compact unit the only a slight gap separating

unit the only a slight gap separating

unit the only a slight gap separating the two ends I took the opportunity to

the two ends I took the opportunity to

the two ends I took the opportunity to make four of these valves and a visual

make four of these valves and a visual

make four of these valves and a visual inspection on the inside shows that the

inspection on the inside shows that the

inspection on the inside shows that the ball and oring are still seated properly

ball and oring are still seated properly

ball and oring are still seated properly in place and the retention bar is

in place and the retention bar is

in place and the retention bar is keeping it all together to finish up I

keeping it all together to finish up I

keeping it all together to finish up I gave these a quick paint job and wrapped

gave these a quick paint job and wrapped

gave these a quick paint job and wrapped one end with a bit of electrical tape to

one end with a bit of electrical tape to

one end with a bit of electrical tape to indicate the direction of flow similar

indicate the direction of flow similar

indicate the direction of flow similar to the marking you’d find on an

to the marking you’d find on an

to the marking you’d find on an electrical diode

electrical diode

electrical diode a fluid can pass freely in one direction

a fluid can pass freely in one direction

a fluid can pass freely in one direction but if the valve is turned around the

but if the valve is turned around the

but if the valve is turned around the pressure closes the valve and the fluid

pressure closes the valve and the fluid

pressure closes the valve and the fluid is blocked the quality of the seal can

is blocked the quality of the seal can

is blocked the quality of the seal can be tested by giving the pressurized

be tested by giving the pressurized

be tested by giving the pressurized valve in a bowl of water this will show

valve in a bowl of water this will show

valve in a bowl of water this will show us if any air is escaping at all the

us if any air is escaping at all the

us if any air is escaping at all the pressure can be released though by

pressure can be released though by

pressure can be released though by pushing up on the inside of the valve to

pushing up on the inside of the valve to

pushing up on the inside of the valve to break the seal between the ball and the

break the seal between the ball and the

break the seal between the ball and the o-ring I tried using a couple of these

o-ring I tried using a couple of these

o-ring I tried using a couple of these valves to make a hand pump which you’ll

valves to make a hand pump which you’ll

valves to make a hand pump which you’ll be able to find in another project it’ll

be able to find in another project it’ll

be able to find in another project it’ll compress air and move water at over five

compress air and move water at over five

compress air and move water at over five gallons per minute you can even create

gallons per minute you can even create

gallons per minute you can even create enough suction to form a makeshift

enough suction to form a makeshift

enough suction to form a makeshift vacuum pump the threaded ends of the

vacuum pump the threaded ends of the

vacuum pump the threaded ends of the valve make them easy to connect replace

valve make them easy to connect replace

valve make them easy to connect replace or rearrange whenever needed

or rearrange whenever needed

or rearrange whenever needed just for curiosity let’s pressure test

just for curiosity let’s pressure test

just for curiosity let’s pressure test the valve by hooking it up to an air

the valve by hooking it up to an air

the valve by hooking it up to an air compressor using this pneumatic adapter

compressor using this pneumatic adapter

compressor using this pneumatic adapter that we made in the rocket rifle project

that we made in the rocket rifle project

that we made in the rocket rifle project the system set at 20 psi and you can see

the system set at 20 psi and you can see

the system set at 20 psi and you can see the valve closed off and prevent any air

the valve closed off and prevent any air

the valve closed off and prevent any air from leaking when I crank it up to 50

from leaking when I crank it up to 50

from leaking when I crank it up to 50 psi the pressure difference is a little

psi the pressure difference is a little

psi the pressure difference is a little more obvious by the compression of the

more obvious by the compression of the

more obvious by the compression of the o-ring and I’m really impressed at how

o-ring and I’m really impressed at how

o-ring and I’m really impressed at how well it works as an alternative I found

well it works as an alternative I found

well it works as an alternative I found that a rubber bouncy ball could replace

that a rubber bouncy ball could replace

that a rubber bouncy ball could replace the entire valve mechanism for low

the entire valve mechanism for low

the entire valve mechanism for low pressure applications since the ball is

pressure applications since the ball is

pressure applications since the ball is rubber

rubber

rubber you don’t need an o-ring to seal the

you don’t need an o-ring to seal the

you don’t need an o-ring to seal the fork to make it work just grab a sharp

fork to make it work just grab a sharp

fork to make it work just grab a sharp knife and a cutting board and begin

knife and a cutting board and begin

knife and a cutting board and begin cutting the top third of the ball very

cutting the top third of the ball very

cutting the top third of the ball very slowly until you slice right through it

slowly until you slice right through it

slowly until you slice right through it now reinsert the ball with the round

now reinsert the ball with the round

now reinsert the ball with the round side facing down and simply slide the

side facing down and simply slide the

side facing down and simply slide the tube in overtop amazingly it’s that easy

tube in overtop amazingly it’s that easy

tube in overtop amazingly it’s that easy and my kids use it for blowing up

and my kids use it for blowing up

and my kids use it for blowing up balloons

balloons

balloons well there’s how to make some useful

well there’s how to make some useful

well there’s how to make some useful pressure rated check valves for as

pressure rated check valves for as

pressure rated check valves for as little as 35 cents if you liked this

little as 35 cents if you liked this

little as 35 cents if you liked 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

random calm

random calm [Music]