VAPOR PROOF

[Gore]

HI,

I HAVE A PUMP THAT DELIVERS GAS AT 50 DEGREES CELSIUS OUTSIDE TEMPERATURE. THE PUMP SHOULD BE VAPOR PROOF. (I AM TALKING ABOUT A PUMP NOT ABOUT A GAS DISPENSER)
DOES SOMEBODY KNOW WHICH ORGANIZATION SET VAPOR PROOF RANKING? WHAT IS VAPOR PROOF CLASIFICATION?

THANKS,

GORE

 

[stanlsimon]

Are you talking about the rating on the electrical components? Do you mean explosion proof for use with flammable gas?

 

[Montemayor]

Pumps pump liquids; compressors and blowers handle gases and vapors.

If you are referring to the misnomer "vacuum pump", then it is just that: a misnomer. If you are handling a gas or vapor then you are applying a blower or compressor - NOT a pump.

I'm not trying to stress semantics, but rather just trying, as stanlsimon, to find out what you are talking about. Just exactly what do you mean by "vapor proof"? After 46 years in this business I'm still anxious to learn what I missed about the transport of gases and vapors.

Perhaps if you tell us the SPECIFICS (gas/vapor involved, application, suction and discharge temperature & pressure, etc.) we can get a better idea and respond in a positive manner.

 

[JLSeagull]

I think that vapor tight or vapor proof would apply to the motor. Look at IEEE 841, TEFC Petroleum Motor Specification. You may find information at your favorite electrical motor web site if you look for IEEE 841. This is the heavy duty type motor. The term "vapor proof" sounds British or IEC as opposed to the US NEC.

 

[Gore]

Hi,

This is a pump for high volatile gas (aviation) that works at 50C outside temperature. The tremperature of the gas should be 20C.
The motor of the pump shall be explosion proof.
I supose that the pump itself shall not release any vapour.
for this reson I used the phrase "vapour proof". Maybe I am wrong. What should be the right phrase to discribe the caracteristics of the pump that works in that conditions?

Thank you for your help

Gore

 

[dcasto]

by gas, do you mean gasoline? If so, you are talking about a pump that pump gasoline. NEC 500 is the code in the uS. API 500 will help interpt it.