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Great replacement for the old or broken non-return valve of
your air compressor.Easy to install with the thread connecting
ends.One thread connector is for tube connecting and the other
thread connectors are for air pressure tank and compressor piston
A faulty compressor check valve will harm a compressor
|NAME || Male Thread Brass Air Compressor Check Valve|| non-return valve|| |
|MATERIAL||BRASS|| || || |
|SIZE|| M1/4''*M1/4''||M3/8''*M1/2'' ||M1/2''*M1/2'' ||M3/4''*M3/4'' |
|SHAPE||Reducing|| Equal|| || |
|HEAD CODE|| || || || |
|THREAD TYPE||NPT , NPS|| BSPT|| BSPP||any other|
|CONNECTION||Male|| Female|| || |
|MEDIUM||Gas|| Liquid|| || |
|PRESSURE||High|| || || |
|Operating Temperature||High|| || || |
|Inspection and Testing||Control Strictness|| || || |
Technics : Forged , CNC
Finishing : Polished , picking , nickel plated ,
chrome plated , etc
Delivery Time : in 7-25 days
( 10000pcs )
Meanwhile our factory can also according
to the customer incoming sample or drawings .
Compressor non-return valve needs to be replaced when it does
not close during compressor shut down and allows air to leak back
into the compressor head .
other kinds of Thread Brass Air Compressor Check Valve
non-return valve for air compressor
On a piston compressors (you know, the ones with the piston that
moves back- and forth), you will find check valves in several
First, there are 2 check valves, or sets of check valves used
inside the piston head to control the airflow from and to the
The air is sucked in through the inlet (check-) valve when the
piston moves down. When the piston moves up again, the air is
compressed and flows out of the cylinder through the second check
valve: the outlet valves.
Now, what would happen if there wasn't a check valve on the inlet
of the compressor? Air will follow the path of least resistance,
which happens to be: back out through the compressor inlet! Not
what we want of course. The check valves make sure that once air
has been sucked into the cylinder, it is 'trapped' and cannot go
That's already two check valves on your piston compressor! But
there's one more! Where? Between the compressor and the compressed
air receiver (the compressed air tank that the compressor is often
This air compressor check valves makes sure that once air has been
pumped into the air tank, it cannot flow back to the compressor
when it shuts down.
On shut down, the pipe between the reciprocating piston compressor
and the air tank (the 'discharge pipe') is 'blown down' by the
blow-down valve (what else! ;) ) Blow-down simply means that any
air pressure inside this pipe is blown-down to 0 bar pressure (this
to help the compressor on start-up). The blow-down valve is often
integrated in the pressure-switch.
The check valves which is installed between this pipe and the air
tank makes sure that only the small pipe is blown-down and not the
whole air tank.Actually, this is an often seen problem on many
If you hear air leaking out of your pressure-switch when the
compressor is stopped, it's not the pressure switch that is broken!
It is the check valve that is leaking air!