Condensate Drains

Condensate drains, or pneumatic drains, are a type of valve which is used to remove condensate from a pneumatic system. As the air cools within a system, the humidity within the air turns to condensate. It is important to remove condensate from an air system as water can cause damage and corrosion. Condensate drains are commonly used in pneumatic air preparation and compressed air treatment systems.

Condensate drains are available in a range of sizes and volumes depending on the system they're compatible with and how heavy-duty the application they're needed for is. Particularly useful are automatic drains, which reduce the risk of forgetting to empty the drain.

How are condensate drains used?

Condensate drains can be used in all kinds of pneumatic systems, for example in factories. They work in conjunction with filters to remove contaminants or to prevent them from building up in a pneumatic system. Excess lubricant, metal particles, rust and scale can be separated out from the system by filters, and then removed via a drain.

Condensate drains can be installed at low points in the system to help stop condensation collecting. They reduce the risk of damage to expensive equipment and the need for downtime.

Manual vs. Automatic condensate drains:

  • Manual condensate drains feature a plug or button which can be used to release the condensate. This is operated by the user. Some valved can be left slightly open for continuous bleeding.
  • Automatic condensate drains, also known as auto drains, use a float which rises when the water level goes up. This causes a sprung valve to open and release the condensate.

Where are condensate drains used?

  • Receiver tanks
  • Coalescing filters
  • Water separators
  • Air dryers

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Description Price Manufacturer Series Drain Type Inlet Port Outlet Port Bowl Capacity Dimensions Inlet Port - Thread Size Minimum Operating Temperature Height Minimum Operating Pressure Outlet Port - Thread Standard Outlet Port - Thread Size Depth Inlet Port Thread Standard
RS Stock No. 725-125
BrandRS PRO
SGD311.96
Each
units
V9112 Automatic R 3/8 R 3/8 - 123 x 96mm 3/8in - 123mm 0bar R 3/8in - R
RS Stock No. 206-6123
BrandRS PRO
SGD257.52
Each
units
V9112 Automatic R 3/8 R 3/8 - 123 x 96mm - - - - - - - -
RS Stock No. 768-1570
Mfr. Part No.AD37
BrandSMC
SGD61.21
Each
units
AD Automatic - - 25cm³ - - -5°C - 0.15MPa - - - -
RS Stock No. 234-1993
Mfr. Part No.AD402-04
BrandSMC
SGD107.83
Each
units
AD Automatic Rc 1/2 Rc 1/2 400cm³/min 184 x 82 x 82mm - +5°C 184mm 1.5bar - - 82mm Rc
RS Stock No. 210-238
Mfr. Part No.EAD202-F02
BrandSMC
SGD74.12
Each
units
EAD202 Automatic - - - - 1/4in - 154mm 1.5bar - 1/4 - -
RS Stock No. 724-554
Mfr. Part No.D11G04/E
BrandParker
SGD174.93
Each
units
D Automatic G 1/2 G 1/2 114ml 135 x 54 x 54mm - +5°C 135mm 2bar - - 54mm G
RS Stock No. 827-2341
Mfr. Part No.AD38-6
BrandSMC
SGD57.61
Each
units
AD Automatic - - 25cm³ - - -5°C - - - 3/8in - -
RS Stock No. 827-2095
Mfr. Part No.AD38
BrandSMC
SGD55.18
Each
units
AD Automatic - - 25cm³ - - -5°C - - - - - -
RS Stock No. 290-3585
Mfr. Part No.ADH4000-04
BrandSMC
SGD393.59
Each
units
ADH4000 Automatic Rc 1/2 Rc 1/2 400cm³/min 189 x 100 x 108mm - +5°C 189mm 0.05MPa - - 108mm Rc
RS Stock No. 210-244
Mfr. Part No.EAD402-F04
BrandSMC
SGD107.80
Each
units
EAD402 Automatic G 3/8 G 1/2 - 82 (Dia.) x 184mm - - 184mm - - - - G
RS Stock No. 827-2036
Mfr. Part No.ADH4000-N04
BrandSMC
SGD393.59
Each
units
ADH Automatic - NPT 1/2 - - - +5°C - 0.05MPa NPT 1/2in - -
RS Stock No. 827-2115
Mfr. Part No.AD27-2
BrandSMC
SGD49.36
Each
units
AD Automatic - - 8cm³ - - -5°C - 0.1MPa - - - -
RS Stock No. 827-2345
Mfr. Part No.AD48
BrandSMC
SGD57.61
Each
units
AD Automatic - - 45cm³ - - -5°C - - - - - -
RS Stock No. 822-3964
Mfr. Part No.17-816-998
SGD308.16
Each
units
17-816 Automatic G 1/2 G 1/8 - 170 x 59mm 1/2in -20°C 170mm - G 1/8in - G
RS Stock No. 827-2253
Mfr. Part No.AD48-2
BrandSMC
SGD86.24
Each
units
AD Automatic - - 45cm³ - - -5°C - - - - - -
RS Stock No. 827-2124
Mfr. Part No.AD27-CZ
BrandSMC
SGD47.17
Each
units
AD Automatic - - 8cm³ - - -5°C - 0.1MPa - - - -
New
RS Stock No. 218-0167
Mfr. Part No.6000-50
SGD169.07
Each
units
Norgren Olympian Plus system 64 and 68 series Automatic - - - - - - - - - - - -
RS Stock No. 175-4496
Mfr. Part No.GRE-1/8
BrandFesto
SGD25.45
Each
units
GRE - G 1/8 - - 15 Dia. x 27.1mm 3.175mm -10°C - 0bar - - - G
RS Stock No. 175-4495
Mfr. Part No.SVS-3-1/8
BrandFesto
SGD191.06
Each
units
SVS Manual G 1/8 G 1/8 - 68 x 37.5 x 40.5mm 1/8mm -10°C 68mm 3.5bar G 1/8in 40.5mm G
RS Stock No. 175-4497
Mfr. Part No.GRE-1/4
BrandFesto
SGD28.78
Each
units
GRE - G 1/4 - - 18.2 Dia. x 32.1mm 6.35mm -10°C - 0bar - - - G