• SMC AK Check Valve (Rc1/8 to Rc1, Low Cracking Pressure)
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SMC AK Check Valve (Rc1/8 to Rc1, Low Cracking Pressure)

SMC AK Check Valve (Rc1/8 to Rc1, Low Cracking Pressure)

SMC AK series in-line check valve with large flow capacity and a low cracking pressure of 0.02 MPa.

Key features

  • Large valve capacity; sonic conductance up to 46 dm3/(s·bar)
  • Low cracking pressure: 0.02 MPa
  • Three body sizes AK2000, AK4000, AK6000 covering Rc1/8 to Rc1
  • NPT (N) and G (F) threads available on order
  • Made-to-order versions (INA-14, XTO-674) for water, stainless steel, high/low temperature

Specifications

Fluid Air
Proof pressure 1.5 MPa
Max. operating pressure 1 MPa
Min. operating pressure 0.02 MPa
Critical pressure ratio b 0.25
Ambient and fluid temperature -5 to 60°C (no freezing)
Body material Aluminum die-cast (AK2000 zinc alloy)
Source SMC Korea catalog (SMCKR_AKAKH_AKB.pdf), p. 784-785 (PDF p. 1-2)
AK2000-01 Body size: AK2000 | Port size: Rc1/8 | C value: 5 dm3/(s·bar) | Weight: 105 g
AK2000-02 Body size: AK2000 | Port size: Rc1/4 | C value: 5.5 dm3/(s·bar) | Weight: 100 g
AK4000-02 Body size: AK4000 | Port size: Rc1/4 | C value: 9.4 dm3/(s·bar) | Weight: 155 g
AK4000-03 Body size: AK4000 | Port size: Rc3/8 | C value: 17 dm3/(s·bar) | Weight: 150 g
AK4000-04 Body size: AK4000 | Port size: Rc1/2 | C value: 19 dm3/(s·bar) | Weight: 140 g
AK6000-06 Body size: AK6000 | Port size: Rc3/4 | C value: 40 dm3/(s·bar) | Weight: 345 g
AK6000-10 Body size: AK6000 | Port size: Rc1 | C value: 46 dm3/(s·bar) | Weight: 315 g
Check ValvesSMC
7 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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SMC AK Check Valve (Rc1/8 to Rc1, Low Cracking Pressure)

Brand SMC·Check Valves

Available part numbers (7)

AK2000-01, AK2000-02, AK4000-02, AK4000-03, AK4000-04, AK6000-06, AK6000-10

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
AK2000-01Body size: AK2000 | Port size: Rc1/8 | C value: 5 dm3/(s·bar) | Weight: 105 g
AK2000-02Body size: AK2000 | Port size: Rc1/4 | C value: 5.5 dm3/(s·bar) | Weight: 100 g
AK4000-02Body size: AK4000 | Port size: Rc1/4 | C value: 9.4 dm3/(s·bar) | Weight: 155 g
AK4000-03Body size: AK4000 | Port size: Rc3/8 | C value: 17 dm3/(s·bar) | Weight: 150 g
AK4000-04Body size: AK4000 | Port size: Rc1/2 | C value: 19 dm3/(s·bar) | Weight: 140 g
AK6000-06Body size: AK6000 | Port size: Rc3/4 | C value: 40 dm3/(s·bar) | Weight: 345 g
AK6000-10Body size: AK6000 | Port size: Rc1 | C value: 46 dm3/(s·bar) | Weight: 315 g

Need a different model, or a part not listed here? Send us your parts list →

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