Stirrup pumps - Moisture traps?

[bighit]

Could the glass beads be the oil trap?

Never used glass beads . The oil traps in the industrial driers I serviced where long filters in the red tubes in the ATR link I posted. ( I worked for ATR for a year ) .

There was a smaller one also for the air going into the pneumatic controls for switching banks . It was the same as the filters in the red tubes.

This is what the filters were made of

Quote

Special Filter Media Oleophobic nanofibre filter media actively repels oil and water to reduce pressure drop and keep running costs to a minimum.


They caught the oil but some did get past them and coated the dessicant and stopped it absorbing the water.

That Drier used 1and half 50 gallon drums of dessicant ( I have one of the empty drums in my garden).

When I was at Rentair offshore they had some that used a
Fan to cool the air before it went through the dessicant .
Some compressors had intercoolers that cooled the air before it left the outlet on the compressor.

The intercooler was cooled through air being sucked in by the fan that cooled the radiator and the compressor oil.

[Antoni]

I can imagine that tiny glass beads would collect oil from an oil mist.

From what I've been able to gather, a glass bead filter would be on the input side of a high pressure stirrup pump. There would be no oil in the ordinary air going into the pump for it to collect.

[derekm]

Never used glass beads . The oil traps in the industrial driers I serviced where long filters in the red tubes in the ATR link I posted. ( I worked for ATR for a year ) .

There was a smaller one also for the air going into the pneumatic controls for switching banks . It was the same as the filters in the red tubes.

This is what the filters were made of

Quote

Special Filter Media Oleophobic nanofibre filter media actively repels oil and water to reduce pressure drop and keep running costs to a minimum.


They caught the oil but some did get past them and coated the dessicant and stopped it absorbing the water.

That Drier used 1and half 50 gallon drums of dessicant ( I have one of the empty drums in my garden).

When I was at Rentair offshore they had some that used a
Fan to cool the air before it went through the dessicant .
Some compressors had intercoolers that cooled the air before it left the outlet on the compressor.

The intercooler was cooled through air being sucked in by the fan that cooled the radiator and the compressor oil.

We had the dryers with the two alternating cylinders of dessicant too, but I vaguely remember (left the oilfield 22 years back!) that the Ingersol screw compressors we had, had oil traps filled with steel balls, hence the suggestion about the glass balls. A dessicant dryer would be advisable/necessary for airgun/ dive bottle filling.

[bighit]

We had the dryers with the two alternating cylinders of dessicant too, but I vaguely remember (left the oilfield 22 years back!) that the Ingersol screw compressors we had, had oil traps filled with steel balls, hence the suggestion about the glass balls. A dessicant dryer would be advisable/necessary for airgun/ dive bottle filling.

Not sure who made the screw compressors for the ones I serviced.


Some had intercoolers but not all .

They were the smallest footprint 1000cfm compressor's in use at the time I was there.

This is the caterpillar engine and screw compressors here


The small tank next to the engineer is the start tank for the air starter for the engine . The thick pipe with the silver middle is the pyroban exhaust gas cooling as they were zone 2 compressors.

Other side . This one has its exhaust gas cooler box removed .

The large vessel at the back is the compressor oil reservoir.
The air then comes out of the top of that reservoir

Click pics to enlarge them.

The oil trap filter is in side there.
[IMG][/IMG]




The oil trap was a huge filter in the large oil reservoir on the other side .

If it started passing oil it was changed or changed after so many hours.