• SMC AP4500 High-Purity Diaphragm Valve (Air-Operated, Low Pressure)
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SMC AP4500 High-Purity Diaphragm Valve (Air-Operated, Low Pressure)

SMC AP4500 High-Purity Diaphragm Valve (Air-Operated, Low Pressure)

SMC AP4500 series air-operated high-purity diaphragm valve (Cv 0.5) for process gas lines, normally closed or normally open, up to 1.7 MPa.

Key features

  • High-purity SUS316L double-melt body, electropolished and passivated; Ni-Co alloy diaphragm, PCTFE seat (polyimide VS option)
  • Air-operated, N.C. (AP4540, AP4550) or N.O. (AP4580); Cv 0.5
  • Max. working pressure 125 psig (0.9 MPa) for AP4540, 250 psig (1.7 MPa) for AP4550/AP4580
  • 1/4 or 3/8 face seal (female/male) or tube weld connections; body S or H (Ni-Cr-Mo)
  • LOTO ready (AP4540), indicator switch option IPC/IPO (AP4550)
  • Port count/position variants, face-to-face 1.75 in (TW4), VS seat and indicator switch / LOTO options are ordered as suffixes

Specifications

Fluid Gases that do not corrode wetted parts
Leakage Inboard 2x10^-11, outboard 2x10^-10 Pa m3/s
Internal finish Ra max 0.4 um (options 0.25/0.18/0.13 um)
Mounting Bottom mount
Operating pressure 0.48 to 0.76 MPa
Ambient and fluid temperature -10 to 71 C
Source SMC Korea catalog Process Gas Equipment (SMCKR_AP3000_4000.pdf), p. 760-761
AP4540S2PWFV4FV4 Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 1/4 face seal female
AP4540S2PWMV4MV4 Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 1/4 face seal male
AP4540S2PWTW4TW4 Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 1/4 tube weld
AP4540S2PWFV6FV6 Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 3/8 face seal female
AP4540S2PWMV6MV6 Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 3/8 face seal male
AP4540S2PWTW6TW6 Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 3/8 tube weld
AP4540H2PWFV4FV4 Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal female
AP4540H2PWMV4MV4 Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal male
AP4540H2PWTW4TW4 Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 tube weld
AP4540H2PWFV6FV6 Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal female
AP4540H2PWMV6MV6 Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal male
AP4540H2PWTW6TW6 Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 tube weld
AP4550S2PWFV4FV4 Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal female
AP4550S2PWMV4MV4 Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal male
AP4550S2PWTW4TW4 Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 tube weld
AP4550S2PWFV6FV6 Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal female
AP4550S2PWMV6MV6 Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal male
AP4550S2PWTW6TW6 Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 tube weld
AP4550H2PWFV4FV4 Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal female
AP4550H2PWMV4MV4 Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal male
AP4550H2PWTW4TW4 Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 tube weld
AP4550H2PWFV6FV6 Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal female
AP4550H2PWMV6MV6 Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal male
AP4550H2PWTW6TW6 Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 tube weld
AP4580S2PWFV4FV4 Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal female
AP4580S2PWMV4MV4 Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal male
AP4580S2PWTW4TW4 Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 tube weld
AP4580S2PWFV6FV6 Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal female
AP4580S2PWMV6MV6 Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal male
AP4580S2PWTW6TW6 Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 tube weld
AP4580H2PWFV4FV4 Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal female
AP4580H2PWMV4MV4 Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal male
AP4580H2PWTW4TW4 Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 tube weld
AP4580H2PWFV6FV6 Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal female
AP4580H2PWMV6MV6 Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal male
AP4580H2PWTW6TW6 Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 tube weld
2-Port ValvesSMC
36 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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SMC AP4500 High-Purity Diaphragm Valve (Air-Operated, Low Pressure)

Brand SMC·2-Port Valves

Available part numbers (36)

AP4540S2PWFV4FV4, AP4540S2PWMV4MV4, AP4540S2PWTW4TW4, AP4540S2PWFV6FV6, AP4540S2PWMV6MV6, AP4540S2PWTW6TW6, AP4540H2PWFV4FV4, AP4540H2PWMV4MV4, AP4540H2PWTW4TW4, AP4540H2PWFV6FV6 + 26 more — see full table ↓

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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
AP4540S2PWFV4FV4Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 1/4 face seal female
AP4540S2PWMV4MV4Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 1/4 face seal male
AP4540S2PWTW4TW4Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 1/4 tube weld
AP4540S2PWFV6FV6Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 3/8 face seal female
AP4540S2PWMV6MV6Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 3/8 face seal male
AP4540S2PWTW6TW6Type: N.C., 0.9 MPa | Body: SUS316L double melt | Connection: 3/8 tube weld
AP4540H2PWFV4FV4Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal female
AP4540H2PWMV4MV4Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal male
AP4540H2PWTW4TW4Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 tube weld
AP4540H2PWFV6FV6Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal female
AP4540H2PWMV6MV6Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal male
AP4540H2PWTW6TW6Type: N.C., 0.9 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 tube weld
AP4550S2PWFV4FV4Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal female
AP4550S2PWMV4MV4Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal male
AP4550S2PWTW4TW4Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 tube weld
AP4550S2PWFV6FV6Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal female
AP4550S2PWMV6MV6Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal male
AP4550S2PWTW6TW6Type: N.C., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 tube weld
AP4550H2PWFV4FV4Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal female
AP4550H2PWMV4MV4Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal male
AP4550H2PWTW4TW4Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 tube weld
AP4550H2PWFV6FV6Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal female
AP4550H2PWMV6MV6Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal male
AP4550H2PWTW6TW6Type: N.C., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 tube weld
AP4580S2PWFV4FV4Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal female
AP4580S2PWMV4MV4Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 face seal male
AP4580S2PWTW4TW4Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 1/4 tube weld
AP4580S2PWFV6FV6Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal female
AP4580S2PWMV6MV6Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 face seal male
AP4580S2PWTW6TW6Type: N.O., 1.7 MPa | Body: SUS316L double melt | Connection: 3/8 tube weld
AP4580H2PWFV4FV4Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal female
AP4580H2PWMV4MV4Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 face seal male
AP4580H2PWTW4TW4Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 1/4 tube weld
AP4580H2PWFV6FV6Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal female
AP4580H2PWMV6MV6Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 face seal male
AP4580H2PWTW6TW6Type: N.O., 1.7 MPa | Body: Ni-Cr-Mo alloy body | Connection: 3/8 tube weld

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