• SMC AK3542 / AK4542 General Gas Diaphragm Valve (Air-Operated)
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SMC AK3542 / AK4542 General Gas Diaphragm Valve (Air-Operated)

SMC AK3542 / AK4542 General Gas Diaphragm Valve (Air-Operated)

SMC AK3542 and AK4542 series air-operated normally closed SUS316 diaphragm valves for general gas lines, with compression fitting or threaded ports.

Key features

  • SUS316 body, Ni-Co alloy diaphragm, PCTFE seat
  • Air-operated N.C.; max. working pressure 125 psig (0.9 MPa)
  • AK3 size (Cv 0.29) with 1/4 ports, AK4 size (Cv 0.5) with 3/8 ports
  • Compression fitting, Rc, R, NPT female or NPT male connections (same type on IN and OUT)
  • Polyimide seat (VS) on order

Specifications

Fluid Gases that do not corrode wetted parts
Body material SUS316
Diaphragm / seat Ni-Co alloy / PCTFE (VS polyimide option)
Ports 2 ports (2P)
Valve type Air-operated, normally closed
Working pressure Up to 0.9 MPa
Source SMC Korea catalog Process Gas Equipment (SMCKR_AK.pdf), p. 814-815
AK3542S2P4T4T Size: AK3 (Cv 0.29) | Connection: 1/4 compression fitting
AK3542S2P4BR4BR Size: AK3 (Cv 0.29) | Connection: Rc1/4
AK3542S2P4BRN4BRN Size: AK3 (Cv 0.29) | Connection: R1/4
AK3542S2P44 Size: AK3 (Cv 0.29) | Connection: NPT1/4 female
AK3542S2P4N4N Size: AK3 (Cv 0.29) | Connection: NPT1/4 male
AK4542S2P6T6T Size: AK4 (Cv 0.5) | Connection: 3/8 compression fitting
AK4542S2P6BR6BR Size: AK4 (Cv 0.5) | Connection: Rc3/8
AK4542S2P6BRN6BRN Size: AK4 (Cv 0.5) | Connection: R3/8
AK4542S2P66 Size: AK4 (Cv 0.5) | Connection: NPT3/8 female
AK4542S2P6N6N Size: AK4 (Cv 0.5) | Connection: NPT3/8 male
2-Port ValvesSMC
10 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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SMC AK3542 / AK4542 General Gas Diaphragm Valve (Air-Operated)

Brand SMC·2-Port Valves

Available part numbers (10)

AK3542S2P4T4T, AK3542S2P4BR4BR, AK3542S2P4BRN4BRN, AK3542S2P44, AK3542S2P4N4N, AK4542S2P6T6T, AK4542S2P6BR6BR, AK4542S2P6BRN6BRN, AK4542S2P66, AK4542S2P6N6N

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
AK3542S2P4T4TSize: AK3 (Cv 0.29) | Connection: 1/4 compression fitting
AK3542S2P4BR4BRSize: AK3 (Cv 0.29) | Connection: Rc1/4
AK3542S2P4BRN4BRNSize: AK3 (Cv 0.29) | Connection: R1/4
AK3542S2P44Size: AK3 (Cv 0.29) | Connection: NPT1/4 female
AK3542S2P4N4NSize: AK3 (Cv 0.29) | Connection: NPT1/4 male
AK4542S2P6T6TSize: AK4 (Cv 0.5) | Connection: 3/8 compression fitting
AK4542S2P6BR6BRSize: AK4 (Cv 0.5) | Connection: Rc3/8
AK4542S2P6BRN6BRNSize: AK4 (Cv 0.5) | Connection: R3/8
AK4542S2P66Size: AK4 (Cv 0.5) | Connection: NPT3/8 female
AK4542S2P6N6NSize: AK4 (Cv 0.5) | Connection: NPT3/8 male

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

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