FX Biathlon pressure regulator
Airgun regulator for FX Biathlon
The Airgun Regulator with vented to atmosphere, but without drilling in the tank. Simple installation. Just unscrew the brass cap with valve and regulator only inserted into the tank and take out o-ring on brass body valve. This is all.
Videos for installation and proper use regulator in the airgun FX Biathlon
FX video Installation
FX ranchero with Altaros regulator 4,5mm test with chrono, with switching velocity
What to do when your output pressure increasing over time? This is most likely caused by dirt on o-ring on plastic screw.
Video how to take regulator out of regulator body
Correct clean air tube and regulator
Setting output pressure on regulator
Installation instructions for FX Biathlon air rifle pressure regulator
It is appropriate before reading the instructions look at the video instructions and then read the instructions for avoiding common mistakes during installation FX
Unscrew airtube + cleaning
Before removing brass plug we need to drain all air from airtube. After unscrewing the brass plug we clean o-ring and inside of the airtube. For cleaning we use foam or lint-free cloth. It is good to wash out the inside of the airtube with degreaser, or technical petrol, etc..
Remove the O-ring from brass plug. Spray regulators o-ring from outer side with silicone spray. Insert regulator into airtube so that it is possible to screw the brass plug and check the presence of the lower O-ring in the groove. By screwing plug we get regulator into correct position. Don't screw plug to the max, but leave a gap (between plug and airtube) about 0.5 mm.
Filling and draining air
Fill airtube with air through quick fill. After proper installation should gauge on airgun show regulated pressure, for the filling always use a filling set with an external gauge, so that you have an overview of the real pressure in the airtube.
Setting pressure of airgun regulator
Altaros regulator output pressure can be set from 100bar (1450 PSI) to 150bar (2200 PSI) and after consultation of up to 170bar (2500PSI) which corresponds to the rotation of the screw behind value 150bar so that the line of the screw is pointing to the letter R. For a quick setting is on regulator engraved scale according to which the desired output pressure can be set. The total scale range of 100-150bar corresponds to approximately 2/3 turn Unscrewing, or screwing setting screw more than 1 turn may result in a malfunction of the regulation and scale will not show you regulated pressure. Groove on red marked half of setting plastic screw represents pointer which shows you currently set pressure on the scale. To change the pressure on regulator, just simply rotate the set screw with the flat screwdriver in the appropriate direction according to regulator scale.
Regulator pressure scale with three different settings
In this picture you will find an old scale (set at 100 bar), which we no longer sell.
- Altaros Regulator
- 2 spare o-rings
Results with installed regulator in air gun FX Biathlon
Fx Ranchero set on 122bar, airgun is set on minimum power
Fx Ranchero set on 122bar, airgun is set on middle power
Fx Ranchero set on 122bar, airgun is set on maximum power
Fx Ranchero without regulator
Fx Ranchero compare with and without regulator (red and purple), airgun is set on middle (green) and maximum (blue) power