WEL6
Air cooler

WEL6 <br/>Air cooler
WEL6002A4

A From mechanical seal
B To mechanical seal
C Vent
D Drain

WEL6
Air cooler

Features

Heat exchangers of the WEL6000A4 range (shown here: WEL6002A4) are used to cool process/barrier fluids in seal supply circuits. The heat exchangers are made of helical, laser-welded finned tubes. The cooling medium is ambient air. It is important, therefore, for WEL heat exchangers to be installed in well ventilated places indoors or, ideally, outdoors. There is a choice of three different basic versions of the WEL6 range as well as being supplied fully assembled together with valves, base frame and other system components.

Advantages

  • Operating limits up to 44 bar / 260 °C
    (638 PSI / 500 °F) (tube side): suitable for a wide range of demanding operating conditions.
  • Can be completely vented and drained
  • Seamless pipes
  • Stainless steel 316/316L: high resistance to corrosive media

Standards and approvals

  • API 682 / ISO 21049
  • API 682 4th ed. Cat. 2/3 - 1CW-FL
  • API 682 4th ed. Cat. 2/3 - 2CW-CW
  • API 682 4th ed. Cat. 2/3 - 2CW-CS
  • API 682 4th ed. Cat. 2/3 - 3CW-FB
  • API 682 4th ed. Cat. 2/3 - 3CW-BB
  • API 682 4th ed. Cat. 2/3 - 3CW-FF
  • API 682 4th ed. Cat. 1 - 1CW-FX
  • API 682 4th ed. Cat. 1 - 2CW-CW
  • API 682 4th ed. Cat. 1 - 3CW-FB

Notes

PED 2014/68/EU (Design and production in accordance with EU Pressure Equipment Directive) or ASME VIII, Div. 1 (Calculation based on ASME VIII, Div. 1 - cooler not subject to ASME stamp requirements, piping <6").

Recommended piping plans




Product variants

Designation WEL6001A4
A001-D0
WEL6002A4
A001-D0
WEL6004A4
A001-D0
Type of heat exchanger ASME PED ASME PED ASME PED
Number of finned tubes 1 2 finned tubes switched
in parallel
2 finned tubes switched
in parallel and doubled length
Connections Flange 3/4", 600 lbs Flange 3/4", 600 lbs Flange 3/4", 600 lbs
Drain / vent connection Flange 1/2", 600 lbs 4) Flange 1/2", 600 lbs 4) Flange 1/2", 600 lbs 4)
Allowable pressure1) 44 bar
(638 PSI)
44 bar
(638 PSI)
44 bar
(638 PSI)
44 bar
(638 PSI)
44 bar
(638 PSI)
44 bar
(638 PSI)
Allowable temperature
process/barrier medium
side (tube side) 1)
-29 °C … +260 °C
(-20 °F … +500 °F)
-29 °C … +260 °C
(-20 °F … +500 °F)
-29 °C … +260 °C
(-20 °F … +500 °F)
Cooling capacity (kW)2) 1.5 2 3
Cooling capacity (kW)3) 0.9 1.4 1.8
Volume (liters) 0.7 1.1 1.5
Metal parts 316/316L 316/316L 316/316L


Other versions on request.

1) Design data, permissible working values depend on the actual conditions of service.
2) Guidelines with barrier/buffer fluid water 60 °C (140 °F) – ambient temperature 20 °C (68 °F);
moved air at min. 0.7 m/s (2.3 ft/s); product flow rate 8 l/min.
3) Guidelines with barrier/buffer fluid oil 60 °C (140 °F) – ambient temperature 20 °C (68 °F);
moved air at min. 0.7 m/s (2.3 ft/s); product flow rate 8 l/min.
4) Version with screwed connection G1/2" available as an option.
True