• SMC AP74B High-Flow Flow Switch (225 to 2600 L/min, Bypass)
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SMC AP74B High-Flow Flow Switch (225 to 2600 L/min, Bypass)

SMC AP74B High-Flow Flow Switch (225 to 2600 L/min, Bypass)

SMC AP74B series high-flow bypass flow switch for bulk gas (BSGS) supply lines, with seven set flows from 225 to 2600 L/min.

Key features

  • Bypass construction for large flows such as bulk specialty gas supply
  • Seven set flows from 225 to 2600 L/min (nor) at N2 100 psig; accuracy +/-20%
  • Horizontal (H) or vertical (V) piping orientation
  • 1/2 in (225-950) or 3/4 in (1100-2600) face seal or tube weld connections
  • Working pressure vacuum to 24.1 MPa (1/2 in) or 16.3 MPa (3/4 in)

Specifications

Fluid Gases that do not corrode wetted parts
Body material SUS316L double melt, electropolished and passivated
Switch Reed switch SPDT, max. 30 VDC 3 W
Cable AWG24 PVC, 3 m
Leakage Inboard/outboard 2x10^-11 Pa m3/s
Internal finish Ra max 0.25 um (M)
Pressure loss 0.0034 MPa
Ambient and fluid temperature -23 to 80 C
Mass 0.56 kg
Source SMC Korea catalog Process Gas Equipment (SMCKR_AP70.pdf), p. 796-797
AP74BH225SMMV8MV8 Mounting: Horizontal piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal male
AP74BH225SMFV8FV8 Mounting: Horizontal piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal female
AP74BH225SMTW8TW8 Mounting: Horizontal piping | Set flow: 225 L/min (nor) | Connection: 1/2 tube weld
AP74BH350SMMV8MV8 Mounting: Horizontal piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal male
AP74BH350SMFV8FV8 Mounting: Horizontal piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal female
AP74BH350SMTW8TW8 Mounting: Horizontal piping | Set flow: 350 L/min (nor) | Connection: 1/2 tube weld
AP74BH500SMMV8MV8 Mounting: Horizontal piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal male
AP74BH500SMFV8FV8 Mounting: Horizontal piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal female
AP74BH500SMTW8TW8 Mounting: Horizontal piping | Set flow: 500 L/min (nor) | Connection: 1/2 tube weld
AP74BH950SMMV8MV8 Mounting: Horizontal piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal male
AP74BH950SMFV8FV8 Mounting: Horizontal piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal female
AP74BH950SMTW8TW8 Mounting: Horizontal piping | Set flow: 950 L/min (nor) | Connection: 1/2 tube weld
AP74BH1100SMMV12MV12 Mounting: Horizontal piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal male
AP74BH1100SMFV12FV12 Mounting: Horizontal piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal female
AP74BH1100SMTW12TW12 Mounting: Horizontal piping | Set flow: 1100 L/min (nor) | Connection: 3/4 tube weld
AP74BH1650SMMV12MV12 Mounting: Horizontal piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal male
AP74BH1650SMFV12FV12 Mounting: Horizontal piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal female
AP74BH1650SMTW12TW12 Mounting: Horizontal piping | Set flow: 1650 L/min (nor) | Connection: 3/4 tube weld
AP74BH2600SMMV12MV12 Mounting: Horizontal piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal male
AP74BH2600SMFV12FV12 Mounting: Horizontal piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal female
AP74BH2600SMTW12TW12 Mounting: Horizontal piping | Set flow: 2600 L/min (nor) | Connection: 3/4 tube weld
AP74BV225SMMV8MV8 Mounting: Vertical piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal male
AP74BV225SMFV8FV8 Mounting: Vertical piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal female
AP74BV225SMTW8TW8 Mounting: Vertical piping | Set flow: 225 L/min (nor) | Connection: 1/2 tube weld
AP74BV350SMMV8MV8 Mounting: Vertical piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal male
AP74BV350SMFV8FV8 Mounting: Vertical piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal female
AP74BV350SMTW8TW8 Mounting: Vertical piping | Set flow: 350 L/min (nor) | Connection: 1/2 tube weld
AP74BV500SMMV8MV8 Mounting: Vertical piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal male
AP74BV500SMFV8FV8 Mounting: Vertical piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal female
AP74BV500SMTW8TW8 Mounting: Vertical piping | Set flow: 500 L/min (nor) | Connection: 1/2 tube weld
AP74BV950SMMV8MV8 Mounting: Vertical piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal male
AP74BV950SMFV8FV8 Mounting: Vertical piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal female
AP74BV950SMTW8TW8 Mounting: Vertical piping | Set flow: 950 L/min (nor) | Connection: 1/2 tube weld
AP74BV1100SMMV12MV12 Mounting: Vertical piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal male
AP74BV1100SMFV12FV12 Mounting: Vertical piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal female
AP74BV1100SMTW12TW12 Mounting: Vertical piping | Set flow: 1100 L/min (nor) | Connection: 3/4 tube weld
AP74BV1650SMMV12MV12 Mounting: Vertical piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal male
AP74BV1650SMFV12FV12 Mounting: Vertical piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal female
AP74BV1650SMTW12TW12 Mounting: Vertical piping | Set flow: 1650 L/min (nor) | Connection: 3/4 tube weld
AP74BV2600SMMV12MV12 Mounting: Vertical piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal male
AP74BV2600SMFV12FV12 Mounting: Vertical piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal female
AP74BV2600SMTW12TW12 Mounting: Vertical piping | Set flow: 2600 L/min (nor) | Connection: 3/4 tube weld
Flow SwitchesSMC
42 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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SMC AP74B High-Flow Flow Switch (225 to 2600 L/min, Bypass)

Brand SMC·Flow Switches

Available part numbers (42)

AP74BH225SMMV8MV8, AP74BH225SMFV8FV8, AP74BH225SMTW8TW8, AP74BH350SMMV8MV8, AP74BH350SMFV8FV8, AP74BH350SMTW8TW8, AP74BH500SMMV8MV8, AP74BH500SMFV8FV8, AP74BH500SMTW8TW8, AP74BH950SMMV8MV8 + 32 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
AP74BH225SMMV8MV8Mounting: Horizontal piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal male
AP74BH225SMFV8FV8Mounting: Horizontal piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal female
AP74BH225SMTW8TW8Mounting: Horizontal piping | Set flow: 225 L/min (nor) | Connection: 1/2 tube weld
AP74BH350SMMV8MV8Mounting: Horizontal piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal male
AP74BH350SMFV8FV8Mounting: Horizontal piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal female
AP74BH350SMTW8TW8Mounting: Horizontal piping | Set flow: 350 L/min (nor) | Connection: 1/2 tube weld
AP74BH500SMMV8MV8Mounting: Horizontal piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal male
AP74BH500SMFV8FV8Mounting: Horizontal piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal female
AP74BH500SMTW8TW8Mounting: Horizontal piping | Set flow: 500 L/min (nor) | Connection: 1/2 tube weld
AP74BH950SMMV8MV8Mounting: Horizontal piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal male
AP74BH950SMFV8FV8Mounting: Horizontal piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal female
AP74BH950SMTW8TW8Mounting: Horizontal piping | Set flow: 950 L/min (nor) | Connection: 1/2 tube weld
AP74BH1100SMMV12MV12Mounting: Horizontal piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal male
AP74BH1100SMFV12FV12Mounting: Horizontal piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal female
AP74BH1100SMTW12TW12Mounting: Horizontal piping | Set flow: 1100 L/min (nor) | Connection: 3/4 tube weld
AP74BH1650SMMV12MV12Mounting: Horizontal piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal male
AP74BH1650SMFV12FV12Mounting: Horizontal piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal female
AP74BH1650SMTW12TW12Mounting: Horizontal piping | Set flow: 1650 L/min (nor) | Connection: 3/4 tube weld
AP74BH2600SMMV12MV12Mounting: Horizontal piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal male
AP74BH2600SMFV12FV12Mounting: Horizontal piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal female
AP74BH2600SMTW12TW12Mounting: Horizontal piping | Set flow: 2600 L/min (nor) | Connection: 3/4 tube weld
AP74BV225SMMV8MV8Mounting: Vertical piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal male
AP74BV225SMFV8FV8Mounting: Vertical piping | Set flow: 225 L/min (nor) | Connection: 1/2 face seal female
AP74BV225SMTW8TW8Mounting: Vertical piping | Set flow: 225 L/min (nor) | Connection: 1/2 tube weld
AP74BV350SMMV8MV8Mounting: Vertical piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal male
AP74BV350SMFV8FV8Mounting: Vertical piping | Set flow: 350 L/min (nor) | Connection: 1/2 face seal female
AP74BV350SMTW8TW8Mounting: Vertical piping | Set flow: 350 L/min (nor) | Connection: 1/2 tube weld
AP74BV500SMMV8MV8Mounting: Vertical piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal male
AP74BV500SMFV8FV8Mounting: Vertical piping | Set flow: 500 L/min (nor) | Connection: 1/2 face seal female
AP74BV500SMTW8TW8Mounting: Vertical piping | Set flow: 500 L/min (nor) | Connection: 1/2 tube weld
AP74BV950SMMV8MV8Mounting: Vertical piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal male
AP74BV950SMFV8FV8Mounting: Vertical piping | Set flow: 950 L/min (nor) | Connection: 1/2 face seal female
AP74BV950SMTW8TW8Mounting: Vertical piping | Set flow: 950 L/min (nor) | Connection: 1/2 tube weld
AP74BV1100SMMV12MV12Mounting: Vertical piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal male
AP74BV1100SMFV12FV12Mounting: Vertical piping | Set flow: 1100 L/min (nor) | Connection: 3/4 face seal female
AP74BV1100SMTW12TW12Mounting: Vertical piping | Set flow: 1100 L/min (nor) | Connection: 3/4 tube weld
AP74BV1650SMMV12MV12Mounting: Vertical piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal male
AP74BV1650SMFV12FV12Mounting: Vertical piping | Set flow: 1650 L/min (nor) | Connection: 3/4 face seal female
AP74BV1650SMTW12TW12Mounting: Vertical piping | Set flow: 1650 L/min (nor) | Connection: 3/4 tube weld
AP74BV2600SMMV12MV12Mounting: Vertical piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal male
AP74BV2600SMFV12FV12Mounting: Vertical piping | Set flow: 2600 L/min (nor) | Connection: 3/4 face seal female
AP74BV2600SMTW12TW12Mounting: Vertical piping | Set flow: 2600 L/min (nor) | Connection: 3/4 tube weld

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