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USA Propane Gas Cylinder Valves with OPD or not , Model 402 / UL

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Guangdong Qicai Valves Technology Co., Ltd.

USA Propane Gas Cylinder Valves with OPD or not , Model 402 / UL

Country/Region china
City & Province foshan guangdong
Categories Steel Rails

Product Details

USA Propane Gas Cylinder Valves with OPD or not , Model 402 / UL 

 

 

Product namePropane Cylinder Valve (USA)
Model402
Working pressure250PSI (1.7MPa)
Outlet threadINT 0.885"-14NGO-LH / EXT 1.312"-5ACME-2G-RH
Seal diameter6mm
Inlet thread3/4"-14NGT
Safety release pressure375PSI (2.6MPa)
Main materialBrass HPb 59-1. Other numbers are available.
OPD (overfilled prevention device)with / without
There are many other specifications, or customized.


 

We will make an accurate price according to your trade terms. Please tell us:

  1. model or other specification? 
  2. EXW (deliver to who), FOB or CIF (which port)?
  3. special package and printing?
  4. quantity?

 
 
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Product Details   

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 pump.

A faulty compressor check valve will harm a compressor

NAME    Male Thread Brass Air Compressor Check Valve  non-return valve 
MATERIALBRASS   
SIZE M1/4''*M1/4''M3/8''*M1/2'' M1/2''*M1/2'' M3/4''*M3/4'' 
SHAPEReducing  Equal  
HEAD CODE    
THREAD TYPENPT , NPS  BSPT    BSPPany other
CONNECTIONMale  Female   
MEDIUMGas  Liquid  
PRESSUREHigh   
Operating TemperatureHigh   
Inspection and TestingControl Strictness   

 Technics :     Forged , CNC machining                                               

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 places.

First, there are 2 check valves, or sets of check valves used inside the piston head to control the airflow from and to the cylinder.

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 back anymore.

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 mounted on).

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 compressors.

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!

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