• SMC AKH/AKB Check Valve (One-Touch Fitting / Bushing Type)
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SMC AKH/AKB Check Valve (One-Touch Fitting / Bushing Type)

SMC AKH/AKB Check Valve (One-Touch Fitting / Bushing Type)

SMC AKH check valve with one-touch fittings (straight or half union) and AKB bushing type check valve, usable from vacuum to 1 MPa.

Key features

  • Straight type (AKH-00) installs in the middle of a tube line; half union type mounts directly on equipment
  • Bushing type AKB (female x male thread) withstands coolant and spatter environments
  • Low cracking pressure 0.005 MPa; usable for vacuum (-100 kPa)
  • Compact: AKH06-00 is 11.6 mm OD, 37.1 mm long, 5 g
  • R thread with sealant (S) standard; NPT thread and inch tube sizes (03 to 13) also available
  • Free flow direction A or B selectable

Specifications

Fluid Air
Proof pressure 1.5 MPa
Operating pressure range -100 kPa to 1 MPa
Cracking pressure 0.005 MPa
Ambient and fluid temperature -5 to 60°C (no freezing)
Applicable tube material Nylon, soft nylon, polyurethane
Source SMC Korea catalog (SMCKR_AKAKH_AKB.pdf), p. 787-790 (PDF p. 4-7)
AKH04-00 Type: Straight (AKH) | Size: Tube 4 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH06-00 Type: Straight (AKH) | Size: Tube 6 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH08-00 Type: Straight (AKH) | Size: Tube 8 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH10-00 Type: Straight (AKH) | Size: Tube 10 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH12-00 Type: Straight (AKH) | Size: Tube 12 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH04A-M5 Type: Half union (AKH) | Size: Tube 4 mm | Port thread: M5x0.8 | Free flow: Male thread to fitting
AKH04A-01S Type: Half union (AKH) | Size: Tube 4 mm | Port thread: R1/8 | Free flow: Male thread to fitting
AKH04B-M5 Type: Half union (AKH) | Size: Tube 4 mm | Port thread: M5x0.8 | Free flow: Fitting to male thread
AKH04B-01S Type: Half union (AKH) | Size: Tube 4 mm | Port thread: R1/8 | Free flow: Fitting to male thread
AKH06A-M5 Type: Half union (AKH) | Size: Tube 6 mm | Port thread: M5x0.8 | Free flow: Male thread to fitting
AKH06A-01S Type: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/8 | Free flow: Male thread to fitting
AKH06A-02S Type: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/4 | Free flow: Male thread to fitting
AKH06B-M5 Type: Half union (AKH) | Size: Tube 6 mm | Port thread: M5x0.8 | Free flow: Fitting to male thread
AKH06B-01S Type: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/8 | Free flow: Fitting to male thread
AKH06B-02S Type: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/4 | Free flow: Fitting to male thread
AKH08A-01S Type: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/8 | Free flow: Male thread to fitting
AKH08A-02S Type: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/4 | Free flow: Male thread to fitting
AKH08A-03S Type: Half union (AKH) | Size: Tube 8 mm | Port thread: R3/8 | Free flow: Male thread to fitting
AKH08B-01S Type: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/8 | Free flow: Fitting to male thread
AKH08B-02S Type: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/4 | Free flow: Fitting to male thread
AKH08B-03S Type: Half union (AKH) | Size: Tube 8 mm | Port thread: R3/8 | Free flow: Fitting to male thread
AKH10A-02S Type: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/4 | Free flow: Male thread to fitting
AKH10A-03S Type: Half union (AKH) | Size: Tube 10 mm | Port thread: R3/8 | Free flow: Male thread to fitting
AKH10A-04S Type: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/2 | Free flow: Male thread to fitting
AKH10B-02S Type: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/4 | Free flow: Fitting to male thread
AKH10B-03S Type: Half union (AKH) | Size: Tube 10 mm | Port thread: R3/8 | Free flow: Fitting to male thread
AKH10B-04S Type: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/2 | Free flow: Fitting to male thread
AKH12A-03S Type: Half union (AKH) | Size: Tube 12 mm | Port thread: R3/8 | Free flow: Male thread to fitting
AKH12A-04S Type: Half union (AKH) | Size: Tube 12 mm | Port thread: R1/2 | Free flow: Male thread to fitting
AKH12B-03S Type: Half union (AKH) | Size: Tube 12 mm | Port thread: R3/8 | Free flow: Fitting to male thread
AKH12B-04S Type: Half union (AKH) | Size: Tube 12 mm | Port thread: R1/2 | Free flow: Fitting to male thread
AKB01A-01S Type: Bushing (AKB) | Size: Body 1/8 | Port thread: Rc1/8 x R1/8 | Free flow: Male to female thread
AKB01B-01S Type: Bushing (AKB) | Size: Body 1/8 | Port thread: Rc1/8 x R1/8 | Free flow: Female to male thread
AKB02A-02S Type: Bushing (AKB) | Size: Body 1/4 | Port thread: Rc1/4 x R1/4 | Free flow: Male to female thread
AKB02B-02S Type: Bushing (AKB) | Size: Body 1/4 | Port thread: Rc1/4 x R1/4 | Free flow: Female to male thread
AKB03A-03S Type: Bushing (AKB) | Size: Body 3/8 | Port thread: Rc3/8 x R3/8 | Free flow: Male to female thread
AKB03B-03S Type: Bushing (AKB) | Size: Body 3/8 | Port thread: Rc3/8 x R3/8 | Free flow: Female to male thread
AKB04A-04S Type: Bushing (AKB) | Size: Body 1/2 | Port thread: Rc1/2 x R1/2 | Free flow: Male to female thread
AKB04B-04S Type: Bushing (AKB) | Size: Body 1/2 | Port thread: Rc1/2 x R1/2 | Free flow: Female to male thread
Check ValvesSMC
39 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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SMC AKH/AKB Check Valve (One-Touch Fitting / Bushing Type)

Brand SMC·Check Valves

Available part numbers (39)

AKH04-00, AKH06-00, AKH08-00, AKH10-00, AKH12-00, AKH04A-M5, AKH04A-01S, AKH04B-M5, AKH04B-01S, AKH06A-M5 + 29 more — see full table ↓

How to order

Send the SMC part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
AKH04-00Type: Straight (AKH) | Size: Tube 4 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH06-00Type: Straight (AKH) | Size: Tube 6 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH08-00Type: Straight (AKH) | Size: Tube 8 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH10-00Type: Straight (AKH) | Size: Tube 10 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH12-00Type: Straight (AKH) | Size: Tube 12 mm | Port thread: None (tube both ends) | Free flow: Tube to tube
AKH04A-M5Type: Half union (AKH) | Size: Tube 4 mm | Port thread: M5x0.8 | Free flow: Male thread to fitting
AKH04A-01SType: Half union (AKH) | Size: Tube 4 mm | Port thread: R1/8 | Free flow: Male thread to fitting
AKH04B-M5Type: Half union (AKH) | Size: Tube 4 mm | Port thread: M5x0.8 | Free flow: Fitting to male thread
AKH04B-01SType: Half union (AKH) | Size: Tube 4 mm | Port thread: R1/8 | Free flow: Fitting to male thread
AKH06A-M5Type: Half union (AKH) | Size: Tube 6 mm | Port thread: M5x0.8 | Free flow: Male thread to fitting
AKH06A-01SType: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/8 | Free flow: Male thread to fitting
AKH06A-02SType: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/4 | Free flow: Male thread to fitting
AKH06B-M5Type: Half union (AKH) | Size: Tube 6 mm | Port thread: M5x0.8 | Free flow: Fitting to male thread
AKH06B-01SType: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/8 | Free flow: Fitting to male thread
AKH06B-02SType: Half union (AKH) | Size: Tube 6 mm | Port thread: R1/4 | Free flow: Fitting to male thread
AKH08A-01SType: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/8 | Free flow: Male thread to fitting
AKH08A-02SType: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/4 | Free flow: Male thread to fitting
AKH08A-03SType: Half union (AKH) | Size: Tube 8 mm | Port thread: R3/8 | Free flow: Male thread to fitting
AKH08B-01SType: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/8 | Free flow: Fitting to male thread
AKH08B-02SType: Half union (AKH) | Size: Tube 8 mm | Port thread: R1/4 | Free flow: Fitting to male thread
AKH08B-03SType: Half union (AKH) | Size: Tube 8 mm | Port thread: R3/8 | Free flow: Fitting to male thread
AKH10A-02SType: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/4 | Free flow: Male thread to fitting
AKH10A-03SType: Half union (AKH) | Size: Tube 10 mm | Port thread: R3/8 | Free flow: Male thread to fitting
AKH10A-04SType: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/2 | Free flow: Male thread to fitting
AKH10B-02SType: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/4 | Free flow: Fitting to male thread
AKH10B-03SType: Half union (AKH) | Size: Tube 10 mm | Port thread: R3/8 | Free flow: Fitting to male thread
AKH10B-04SType: Half union (AKH) | Size: Tube 10 mm | Port thread: R1/2 | Free flow: Fitting to male thread
AKH12A-03SType: Half union (AKH) | Size: Tube 12 mm | Port thread: R3/8 | Free flow: Male thread to fitting
AKH12A-04SType: Half union (AKH) | Size: Tube 12 mm | Port thread: R1/2 | Free flow: Male thread to fitting
AKH12B-03SType: Half union (AKH) | Size: Tube 12 mm | Port thread: R3/8 | Free flow: Fitting to male thread
AKH12B-04SType: Half union (AKH) | Size: Tube 12 mm | Port thread: R1/2 | Free flow: Fitting to male thread
AKB01A-01SType: Bushing (AKB) | Size: Body 1/8 | Port thread: Rc1/8 x R1/8 | Free flow: Male to female thread
AKB01B-01SType: Bushing (AKB) | Size: Body 1/8 | Port thread: Rc1/8 x R1/8 | Free flow: Female to male thread
AKB02A-02SType: Bushing (AKB) | Size: Body 1/4 | Port thread: Rc1/4 x R1/4 | Free flow: Male to female thread
AKB02B-02SType: Bushing (AKB) | Size: Body 1/4 | Port thread: Rc1/4 x R1/4 | Free flow: Female to male thread
AKB03A-03SType: Bushing (AKB) | Size: Body 3/8 | Port thread: Rc3/8 x R3/8 | Free flow: Male to female thread
AKB03B-03SType: Bushing (AKB) | Size: Body 3/8 | Port thread: Rc3/8 x R3/8 | Free flow: Female to male thread
AKB04A-04SType: Bushing (AKB) | Size: Body 1/2 | Port thread: Rc1/2 x R1/2 | Free flow: Male to female thread
AKB04B-04SType: Bushing (AKB) | Size: Body 1/2 | Port thread: Rc1/2 x R1/2 | Free flow: Female to male thread

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