• SMC AD402-A Auto Drain Valve (Float Type, Vertical / Horizontal)
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SMC AD402-A Auto Drain Valve (Float Type, Vertical / Horizontal)

SMC AD402-A Auto Drain Valve (Float Type, Vertical / Horizontal)

SMC AD402-A series float type auto drain valve that discharges condensate from tanks, dryers and filters automatically, in vertical (top) or horizontal (side) piping versions.

Key features

  • Float type auto drain, N.C. (C) or N.O. (D) valve type
  • Drain discharge up to 100 cm³ per cycle (3x previous model), reducing operating frequency
  • Two-layer construction: polycarbonate case with transparent polycarbonate case guard
  • Port sizes Rc1/4, 3/8 and 1/2; drain outlet 3/8; metal (2) or nylon (6) case available
  • Bleed valve (V) on order for sizes 3/8 and 1/2 (standard on 1/4); psi units (Z) for NPT only
  • G (F) and NPT (N) threads available on order

Specifications

Fluid Air
Proof pressure 1.5 MPa
Max. operating pressure 1.0 MPa
Operating pressure range N.C. 0.15 to 1.0 MPa; N.O. 0.1 to 1.0 MPa
Ambient and fluid temperature -5 to 60°C (no freezing)
Drain outlet 3/8
Case guard material Polycarbonate
Mass 0.46 kg (AD402-A), 0.52 kg (AD402T-A)
Colour White
Compressor requirement (N.O.) 400 L/min (ANR) or more
Source SMC Korea catalog AD402-A Series (SMCKR_AD402-A.pdf), p. 487-490 (PDF p. 1-4)
AD402-02C-A Piping: Vertical (top) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-02C-2-A Piping: Vertical (top) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-02C-6-A Piping: Vertical (top) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-02D-A Piping: Vertical (top) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-02D-2-A Piping: Vertical (top) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-02D-6-A Piping: Vertical (top) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-03C-A Piping: Vertical (top) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-03C-2-A Piping: Vertical (top) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-03C-6-A Piping: Vertical (top) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-03D-A Piping: Vertical (top) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-03D-2-A Piping: Vertical (top) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-03D-6-A Piping: Vertical (top) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-04C-A Piping: Vertical (top) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-04C-2-A Piping: Vertical (top) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-04C-6-A Piping: Vertical (top) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-04D-A Piping: Vertical (top) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-04D-2-A Piping: Vertical (top) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-04D-6-A Piping: Vertical (top) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402T-02C-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-02C-R-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-02C-2-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-02C-2R-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-02C-6-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-02C-6R-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-02D-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-02D-R-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-02D-2-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-02D-2R-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-02D-6-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-02D-6R-A Piping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-03C-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-03C-R-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-03C-2-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-03C-2R-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-03C-6-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-03C-6R-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-03D-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-03D-R-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-03D-2-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-03D-2R-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-03D-6-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-03D-6R-A Piping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-04C-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-04C-R-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-04C-2-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-04C-2R-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-04C-6-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-04C-6R-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-04D-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-04D-R-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-04D-2-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-04D-2R-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-04D-6-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-04D-6R-A Piping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port right
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54 product codes available in this family
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SMC AD402-A Auto Drain Valve (Float Type, Vertical / Horizontal)

Brand SMC·Filters

Available part numbers (54)

AD402-02C-A, AD402-02C-2-A, AD402-02C-6-A, AD402-02D-A, AD402-02D-2-A, AD402-02D-6-A, AD402-03C-A, AD402-03C-2-A, AD402-03C-6-A, AD402-03D-A + 44 more — see full table ↓

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Product codes & specifications
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Product codeSpec
AD402-02C-APiping: Vertical (top) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-02C-2-APiping: Vertical (top) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-02C-6-APiping: Vertical (top) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-02D-APiping: Vertical (top) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-02D-2-APiping: Vertical (top) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-02D-6-APiping: Vertical (top) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-03C-APiping: Vertical (top) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-03C-2-APiping: Vertical (top) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-03C-6-APiping: Vertical (top) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-03D-APiping: Vertical (top) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-03D-2-APiping: Vertical (top) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-03D-6-APiping: Vertical (top) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-04C-APiping: Vertical (top) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-04C-2-APiping: Vertical (top) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-04C-6-APiping: Vertical (top) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402-04D-APiping: Vertical (top) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: Vertical piping
AD402-04D-2-APiping: Vertical (top) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: Vertical piping
AD402-04D-6-APiping: Vertical (top) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: Vertical piping
AD402T-02C-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-02C-R-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-02C-2-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-02C-2R-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-02C-6-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-02C-6R-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-02D-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-02D-R-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-02D-2-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-02D-2R-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-02D-6-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-02D-6R-APiping: Horizontal (side) | Port: Rc1/4 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-03C-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-03C-R-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-03C-2-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-03C-2R-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-03C-6-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-03C-6R-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-03D-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-03D-R-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-03D-2-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-03D-2R-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-03D-6-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-03D-6R-APiping: Horizontal (side) | Port: Rc3/8 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-04C-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-04C-R-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-04C-2-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-04C-2R-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-04C-6-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-04C-6R-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.C. (no drain when unpressurized) | Case: Nylon | Flow direction: IN port right
AD402T-04D-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port left
AD402T-04D-R-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Polycarbonate | Flow direction: IN port right
AD402T-04D-2-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port left
AD402T-04D-2R-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Metal | Flow direction: IN port right
AD402T-04D-6-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port left
AD402T-04D-6R-APiping: Horizontal (side) | Port: Rc1/2 | Drain type: N.O. (drains when unpressurized) | Case: Nylon | Flow direction: IN port right

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