- Brief discussion on and demonstrating some
of the many types of valves encountered in everyday life. Shows ball valves,
check valves, gate valves and compares the Joker valve to the Tricuspid,
Aortic and Pulmonary valves.
Hi. Today on Repairs101 Iím going to do a
little something about valves.
- So now this was actually a really difficult
video to shoot because the more I thought about valves the more I realized
Ė itís really quite amazing Ė theyíre everywhere. Plus the more I
thought about all the different kinds of valves.
- These are valves. Thereís a valve in
there. Those are valves. Hereís a valve. [Flushes] Thatís a valve.
Hereís three valves that are all essentially the same the only
thing different is the plastic cap. Thereís another valve right here.
- So this little object is an adapter for my
high pressure compression tester. Now the reason Iím showing you this, in
this particular case is to show you the valve in the end of it. This funny
looking, seemingly broken screwdriver Ė you might think that you have a
broken screwdriver on your hands if you have one of these but in fact itís
a Schrader valve remover. It just goes in there like that, and then itís
threaded so it just spins right on out. OK so thatís what a Schrader valve
looks like. Pretty cool, eh? Now if you think you recognize the Schrader
valve Ė and if you think it looks familiar Ė youíre right.
- Hereís some valves out of an engine. And
this one has still got the valve guide on it.
- Now this monster here this is a thermostat
for very large diesel engines and just like the little tiny Schrader valve
itís dropped into a pipe or a passageway and it blocks it and then when
itís activated by this wax slug in the back here the gap opens here and
the fluid is able to wash in past it.
- Now a ball valve is exactly that, itís a
valve that operates by turning a ball inside of a passageway. As you can
see, thereís a ball valve right there. So thatís what a ball valve looks
- OK so hereís a regulator and it is a ball
valve. And here it comes around the other side, there we go. So thatís a
- So now this oneís called a ďpet-cockĒ.
This is the kind of thing youíll find as a drain on the bottom of your
- Pardon the pun but your garden variety
garden tap. Itís a classic stem valve. Itís a classic stem valve it has
a flat bushing rather than the domed one you might have seen in my other
- OK so hereís a half inch gate valve. And
the gate valveís pretty good. Iíll justÖ
- OK so here we have another kind of gate
valve. Check it out on this one the gate swings from side to side.
- Thereís another small one: there itís
another small gate valve. Close the gate, open the gate again.
- And yet another kind of gate valve, as you
can see on this one the gateís swung open. See up in the top corner here
the gate is swung down and open, to let the floodgate open.
- This little babyís a three quarter inch
check valve. And a check valve is a one way passage. You can see thereís a
flapper valve inside so fluid can flow through Ė in the direction of the
arrow very easily Ė but canít flow in the other direction. Thereís
your flapper right there.
- This is a grease needle with a grease nipple
on the end. You see there is a check valve installed in the end of the
grease nipple. Itís just a ball bearing with a tiny little spring behind
it. Poke it and release it and there should be a little grease come out of
it. There, you see that? I got a little grease out of it. So thereís
another kind of check valve, the ball bearing check valve.
- Iím not going to open it because I want to
be able to identify it and identify its part number. There you go another
ball bearing check valve. The hose would slip on here and youíd have it
attached to your fuel can and when you disconnect it of course you donít
want the fuel coming out. The spring will push the ball bearing and make a
seal on the end.
- Itís also a check valve and itís called
a Joker valve. And whatís really interesting about it is Ė aside from
the fact that itís made out of rubber and just has sort of an elastic
memory that allows material to pass through this way but of course resists
passage of material through this way Ė and whatís interesting about it
of course is that itís very, very similar in design to the Tricuspid,
Aortic and Pulmonary valves. Tricuspid Ė this is a tricuspid: three points
Ė Aortic and Pulmonary valves in your heart. They are essentially the same
kind of design. Except instead of hard rubber with an elastic memory your
heart valves of course are made of dynamic living tissue.
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