PRODUCT DATA SHEET AOK20B v1.

02

AUTOMATIC CONDENSATE
DRAIN - AOK20B
DESCRIPTION
AOK20B has been developed for fully automatic discharging of
condensate or any other non-aggressive fluid from compressed
air(1) system. The unit can be installed as external drain on any
application specified below. Condensate accumulates in the
aluminium reservoir and when the level is high enough condensate
is being discharged from the system without any air losses. Direct
acting valve is operated by precise level controlled floater which
assures reliable and efficient operation. Thanks to robust
aluminium housing AOK20B is suitable for heavy duty applications.
AOK20B is also equipped with separate manual drain for venting.

APPLICATIONS(2)
• Air Compressor (piston or screw)
• After-cooler
• Cyclone condensate separator
• Pressure vessel/Air tank
• Air dryer
• Air filter
(1)
For any other technical gas please contact us or your local dealer
(2)
AOK20B can be used in variety of applications. For applications not listed please contact us or your local dealer.

TECHNICAL SPECIFICATION
Operating temperature 1,5 - 65 °C 35 - 149 °F
Operating pressure 0 - 20 bar(g) 0 - 290 psi
Minimum reccomended operating pressure 1,5bar (g) 21,8 psi
Operating media Condensate (air, water, oil); Non-agressive
Nominal discharge capacity 167 l/h (at 7barg) 252 l/h(at 16barg)
Discharge orifice cross cection 1,8mm 0,0708 inch
Inlet connection G ½” (NPT on request)
Outlet connection G ½” (NPT on request)
Reservoar volume 0,4 l
Weight 0,6 kg
Valve type Direct acting, Normally closed

MATERIALS
Housing material Aluminium (EN-AC-46000)
Fittings, Screws Brass, Brass-zinc plated, Steel
Floater Stainless steel 1.4301
Sealing NBR
Cover PA 6
PRODUCT DATA SHEET AOK20B v1.02

CAPACITY
Northern Europe, Moist tropical and
Rest of the world
Canada, Central Asia subtropical regions
Peak compressor capacity [m3/min] 110 100 60
Peak dryer capacity [m3/min] 240 190 120
Peak filter capacity [m3/min] 1200 970 600
The amount of condensed water in compressed air system depends mainly on outside air temperature. Above
specified flows refer to discharge capacity at operating pressure 7barg.

CALCULATION OF CAPACITY
For rough calculation of discharge capacity at certain pressure use following equation:
𝑄 = 63√∆𝑝 Example: if operating at 7barg; 𝑄 = 63√7 = 166,7

DIMENSIONS
Type A B C
AOK20B 135 110 130

PRESSURE EQUIPMENT DIRECTIVE

MAINTENANCE
Once per year make a visual check of the drain and
make sure there is no visual damage or leakage.
Clean interior of the reservoir regularly. Intervals of
cleaning depend on contamination of condensate.
Replace the sealings if necessary.

RECCOMENDATIONS
• We recommend the use of ball valve between pressure vessel and inlet
connection.
• We recommend the use of strainer element between pressure vessel and inlet
connection.
• We recommend the use of nipple with venting tube to avoid generation of air
bubbles. Nipple is screwed in inlet connection.

Condensate discharged from compressed air system contains significant amounts of

INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE