GEMS SENSORS Flow Switches

Stainless-steel, brass, bronze, polypropylene and Ryton flow switches designed to control the flow of liquids, gases or steam. Feature a maximum fluid temperature of 300 degrees F, and can withstand a maximum pressure of 2000 psi

Filter

Gems Sensors flow switches monitor the flow rate and pressure of liquids, air or other gaseous media through a duct, system or loop.
GEMS SENSORS -

FS-380 Series Flow Switch

StyleModelSwitch TypeConnection TypeMin. Flow RateMax. Flow RateMin. Ambient Temp.Max. PressureMedia Temp. RangeMax. Ambient Temp.Price
AFS-380P 197083SPSTNPT0 GPM1 GPM0°F125 psi0°F to +212°F212°F€159.83
BFS-380 168435SPSTNPT1 GPM1.5 GPM-20°F1500 psi-20°F to +275°F275°F€312.15
CFS-380 179992SPSTNPT0 GPM0.25 GPM-20°F1500 psi-20°F to +275°F275°F€687.68
CFS-380 193482SPSTNPT0 GPM0.15 GPM-20°F1500 psi-20°F to +275°F275°F€665.79
AFS-380P 197085SPSTNPT1 GPM2 GPM0°F125 psi0°F to +212°F212°F€159.83
CFS-380 179996SPSTNPT1 GPM2 GPM-20°F1500 psi-20°F to +275°F275°F€706.75
BFS-380 168432SPSTNPT0 GPM0.25 GPM-20°F1500 psi-20°F to +275°F275°F€293.45
AFS-380P 209876SPSTNPT0 GPM0.15 GPM0°F125 psi0°F to +212°F212°F€150.09
BFS-380 168433SPSTNPT0 GPM0.5 GPM-20°F1500 psi-20°F to +275°F275°F€289.54
AFS-380P 197081SPSTNPT0 GPM0.25 GPM0°F125 psi0°F to +212°F212°F€150.09
BFS-380 168434SPSTNPT0 GPM1 GPM-20°F1500 psi-20°F to +275°F275°F€312.15
AFS-380P 197082SPSTNPT0 GPM0.5 GPM0°F125 psi0°F to +212°F212°F€150.09
BFS-380 181130SPSTNPT0 GPM0.15 GPM-20°F1500 psi-20°F to +275°F275°F€312.15
BFS-380 178353SPSTNPT1 GPM2 GPM-20°F1500 psi-20°F to +275°F275°F€312.15
AFS-380P 197084SPSTNPT1 GPM1.5 GPM0°F125 psi0°F to +212°F212°F€150.09
CFS-380 179993SPST, NOMNPT---20°F1500 psi-20°F to +275°F275°F€601.34
CFS-380 179995SPST, Normally OpenNPT1 GPM5 GPM-20°F1500 psi-20°F to +275°F275°F€706.75
GEMS SENSORS -

FS-150Series Flow Switch

StyleModelSwitch PositionMax. Flow RateMax. PressureHousing MaterialSwitch TypeConnection SizeConnection TypeSwitch EnclosurePrice
AFS-150 NC 0.5GPMNormally Closed-150 psi, 200 psiPolypropyleneSPST1/2"NPTPolypropylene€254.98
AFS-150 NC 1.0GPMNormally Closed1 GPM150 psi, 200 psiPolypropyleneSPST1/2"NPTPolypropylene€209.22
AFS-150 NO 1.0GPMNormally Open1 GPM200 psiPolypropyleneSPST1/2"NPTPolypropylene€254.98
AFS-150 NO 3.0GPMNormally Open3 GPM150 psi, 200 psiPolypropyleneSPST1/2"NPTPolypropylene€254.98
AFS-150 NO 0.5GPMNormally Open0.5 GPM150 psi, 200 psiPolypropyleneSPST1/2"NPTPolypropylene€254.98
AFS-150 NO 2.0GPMNormally Open2 GPM150 psi, 200 psiPolypropyleneSPST1/2"NPTPolypropylene€242.95
GEMS SENSORS -

FS-4 Series Flow Switch

StyleModelSwitch TypeMin. Flow RateMax. Flow RateHousing MaterialConnection SizeConnection TypeMin. Ambient Temp.Max. PressurePrice
AFS-4 122352SPDT0 GPM0.1 GPMPPS9/16"UNF0°F250 psi€271.46
AFS-4 122353SPDT1 GPM0.25 GPMPPS9/16"UNF0°F250 psi€291.56
AFS-4 122355SPDT1 GPM0.75 GPMPPS9/16"UNF0°F250 psi€250.91
AFS-4 122356SPDT0 GPM0.5 GPMPPS9/16"UNF0°F250 psi€271.46
AFS-4 122354SPST0 GPM0.5 GPMPPS9/16"UNF0°F250 psi€278.38
StyleModelMin. Flow RateMax. Flow RateHousing MaterialSwitch TypeSwitch PositionConnection SizeConnection TypeMin. Ambient Temp.Price
AFS-500 1702310 GPM0.25 GPMPolypropyleneSPSTNormally Open3/4"FNPT0°F€780.68
AFS-500 1702320 GPM0.5 GPMPolypropyleneSPSTNormally Open3/4"FNPT0°F€210.02
AFS-500 1702330 GPM1 GPMPolypropyleneSPSTNormally Open3/4"FNPT0°F€196.31
AFS-500 1751171 GPM2 GPMPolypropyleneSPSTNormally Open3/4"FNPT0°F€210.02
AFS-500 1702341 GPM2.5 GPMPolypropyleneSPSTNormally Open3/4"FNPT0°F€210.02
AFS-500 1702351 GPM5 GPMPolypropyleneSPSTNormally Open3/4"FNPT0°F€210.02
StyleModelMax. Flow RateMedia Temp. RangeSwitch TypeConnection SizeMin. Flow RateConnection TypeHousing MaterialMin. Ambient Temp.Price
AFS-926 269380.013 GPM-20°F to +225°FSPDT1/4"0 GPMFNPTBrass-20°F€631.04
AFS-926 269420.013 GPM-20°F to +225°FSPDT1/4"0 GPM---20°F€601.40
AFS-926 269510.025 GPM-20°F to +300°FSPDT1/4"0 GPMFNPTBrass-20°F€920.53
AFS-926 269390.045 GPM-20°F to +225°FSPDT1/4"0 GPMFNPTBrass-20°F€601.40
AFS-926 269410.065 GPM-20°F to +225°FSPDT1/4"0 GPMFNPTBrass-20°F€631.04
AFS-926 269560.075 GPM-20°F to +300°FSPDT1/4"0 GPMFNPT--20°F€881.72
AFS-926 269521 GPM-20°F to +225°FSPDT1/4"0 GPMFNPTBrass-20°F€920.53
StyleModelSwitch PositionMin. Flow RateMax. Flow RateHousing MaterialConnection SizeConnection TypeSwitch TypeMax. PressurePrice
AFS-927 70827Normally Closed0 GPM0.25 GPMBrass1/4"FNPTSPST1000 psi€229.62
AFS-927 70826Normally Closed0 GPM0.1 GPMBrass1/4"FNPTSPST1000 psi€270.31
AFS-927 70828Normally Closed0 GPM0.5 GPMBrass1/4"FNPTSPST1000 psi€270.31
AFS-927 70829Normally Closed0 GPM0.75 GPMBrass1/4"FNPTSPST1000 psi€229.62
AFS-927 70830Normally Closed0 GPM1 GPMBrass1/4"FNPTSPST1000 psi€270.31
AFS-927 70831Normally Closed1 GPM1.5 GPMBrass1/4"FNPT-1000 psi€247.93
AFS-927 70820Normally Open0 GPM0.1 GPMBrass1/4"FNPTSPST1000 psi€270.31
AFS-927 70821Normally Open0 GPM0.25 GPMBrass1/4"FNPTSPST1000 psi€283.76
AFS-927 70822Normally Open0 GPM0.5 GPMBrass1/4"FNPTSPST1000 psi€283.76
AFS-927 70823Normally Open0 GPM0.75 GPMBrass1/4"FNPTSPST1000 psi€258.80
AFS-927 70825Normally Open1 GPM1.5 GPMBrass1/4"FNPTSPST1000 psi€283.76
StyleModelSwitch TypeConnection SizeConnection TypeMin. Flow RateMax. Flow RateHousing MaterialMin. Ambient Temp.Max. PressurePrice
AFS-10798 25365SPDT1/2"FNPT0.5 GPM20 GPMBrass-20°F1000 psi€935.11
AFS-10798 25366SPDT1/2"FNPT0.5 GPM20 GPM--20°F1000 psi€1,443.93
StyleModelConnection SizeMax. Flow RateMin. Flow RateMin. Ambient Temp.Overall WidthHousing MaterialSwitch TypeSwitch PositionPrice
A230500-4-51 1/2"5 GPM1 GPM-14°2.3"Stainless SteelSPSTNormally Open€817.12
A230500-3-401"3 GPM1 GPM-14°1 1/2"Stainless SteelSPSTNormally Open€766.11
A230500-3-51"0.64 GPM0 GPM-14°F1 1/2"Stainless SteelSPSTNormally Open€817.12
A230500-3-601"4.34 GPM1 GPM-14°F1 1/2"Stainless SteelSPSTNormally Open€817.12
A230500-1-201/2"0.46 GPM0 GPM-14°1.1"Stainless SteelSPSTNormally Open€807.22
A230500-1-601/2"1.34 GPM1 GPM-14°1.1"Stainless SteelSPSTNormally Open€802.88
A230500-2-603/4"2.79 GPM1 GPM-14°1 1/2"Stainless SteelSPSTNormally Open€817.12
A230500-2-203/4"1.01 GPM--14°F1 1/2"Stainless SteelSPSTNormally Open€782.72
A230500-2-53/4"0.35 GPM0 GPM-14°1 1/2"Stainless SteelSPSTNormally Open€766.11
A230500-2-403/4"1.9 GPM1 GPM-14°-Stainless SteelSPSTNormally Open€769.24
GEMS SENSORS -

FS-550 Series Flow Switches

StyleModelVoltageSwitch TypeConnection SizeConnection TypeFor Pipe SizeMin. Flow RateMax. Flow RateMin. Ambient Temp.Price
AFS-550 2960820V ACSPDT1"NPT1 1/2"15 GPM52 GPM-30°F€780.68
BFS-550 2960924-240VSPDT1"NPT1 1/2"15 GPM52 GPM-30°F€565.39
StyleModelMin. Flow RateMax. Flow RateHousing MaterialSwitch TypeConnection SizeConnection TypeMin. Ambient Temp.Max. PressurePrice
AFS-400 266000.75 GPM4 GPMBronzeSPDT3/4"FNPT-20°F400 psi€580.00
AFS-400 266012 GPM8 GPMBronzeSPDT3/4"FNPT-20°F400 psi€555.45
AFS-400 266027 GPM14 GPMBronzeSPDT3/4"FNPT-20°F400 psi€529.38
GEMS SENSORS -

FS-200 Series Flow Switches

StyleModelConnection SizeMin. Flow RateMax. Flow RateMax. PressureMedia Temp. RangeMax. Ambient Temp.HeightMax. Filter RatingPrice
AFS-200 266151"1 GPM6 GPM400 psi-20°F to +200°F200°F3"150 µm€543.42
AFS-200 268381"2 GPM8 GPM400 psi-20°F to +200°F200°F3"150 µm€543.42
AFS-200 266161"5 GPM15 GPM400 psi-20°F to +200°F200°F3"150 µm€570.23
BFS-10798 253641/2"0.5 GPM20 GPM1000 psi-20°F to +300°F300°F2"50 µm€1,560.15
StyleModelHousing MaterialConnection SizeMin. Flow RateMax. Flow RateDc Contact RatingMax. PressureMedia Temp. RangeOverall WidthPrice
ARFS 180395Brass3/4"5 GPM30 GPM20 Ma @ 24V200 psi-20°F to +212°F3.9"€675.25
ARFS 156265Brass1/4"0.5 GPM5 GPM20 Ma @ 24V200 psi-20°F to +212°F3"€698.43
ARFS 156268Brass1/2"4 GPM20 GPM20 Ma @ 24V200 psi-20°F to +212°F3"€698.30
ARFS 181688Brass1"8 GPM60 GPM20mA @ 24V200 psi-20°F to +212°F3.9"€734.86
ARFS 155485Polypropylene1/2"4 GPM20 GPM20 Ma @ 24V100 psi-20°F to +180°F3.1"€581.03
ARFS 155425Polypropylene1/4"0.5 GPM5 GPM20 Ma @ 24V100 psi-20°F to +180°F3.1"€565.78

Features

  • Gems Sensors SPDT 20VA air flow switches feature brass / stainless steel construction for structural rigidity and resisting corrosion on exposed surfaces. These Gems flow switches can be operated at fluid temperatures ranging from -20 to 300 degrees F. They have an SPDT switch for three-way switching and have operating pressures up to 1000 psi.
  • The brand's flow switches feature 303 / 316 stainless steel construction for structural rigidity and resisting corrosion on exposed surfaces. These Gems flow switches can be operated at temperatures up to -14 to 140 degrees F. They are compatible with liquid or gases and have a flow rate of 5 / 40 cm/sec.

Frequently Asked Questions

How does the flow switch work?

Flow switch works by detecting the movement of a sensing element in response to the fluid flow. When the fluid flow reaches a certain threshold, the sensing element is actuated and triggers an electrical switch for controlling other devices, such as pumps or valves.

What factors should be considered while selecting Gems Sensors flow switch?

  • Flow rate
  • Pressure and temperature of the fluid being detected
  • Material compatibility of the sensing element and housing with the fluid.