MCDONNELL & MILLER Flow Switches

Suitable for motors, automatic burners, signal lights, alarms and metering devices. Feature a maximum flow rate and of 131 gpm and 1000 psi, respectively

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Spdt Flow Switches

StyleModelConnection SizeHousing MaterialFor Pipe SizeMin. Flow RateMax. Flow RateSwitch EnclosureMax. PressureMedia Temp. RangePrice
AFS7-41 1/4"Brass1 1/4", 16"4.8 GPM4.8 GPMNEMA 1300 psi32°F to 300°F€1,066.83
BFS4-31"Stainless Steel1"6 GPM10.2 GPM-160 psi32°F to 300°F€590.62
CFS8-W1"Stainless Steel1"4.9 GPM17.6 GPMNEMA 4X160 psi32°F to 225°F€634.65
DFS11/2"-1/2"---100 psi32°F to 225°F€960.55
EAF-18"Aluminum---NEMA 1-32°F to 300°F€597.41
MCDONNELL & MILLER -

Spdt Snap Switch Flow Switches

StyleModelConnection SizeHousing MaterialSwitch TypeConnection TypeMax. Flow RateMin. Ambient Temp.Max. PressureVoltage
AFS2501"Stainless SteelSPDT Snap SwitchNPT-32°F160 psi120/240V AC
RFQ
AFS4-3T3/4", 1"Stainless SteelSPDT Snap SwitchNPT27 GPM32°F160 psi120/240V AC
RFQ
MCDONNELL & MILLER -

Series FS5 Switch Liquid Flow

StyleModelHousing MaterialSwitch TypeConnection SizeFor Pipe SizeMax. PressureEnclosure RatingConnection TypeMin. Flow RatePrice
AFS5-1BrassSPDT1"1"150 psiGeneral PurposeNPT1.5 GPM€690.74
AFS5-3/4BrassSPDT3/4"3/4"150 psiNEMA 1NPT1.5 GPM€631.38
BFS5Stainless SteelSPDT Snap Switch3/4"-1500 psiNEMA 1NPT--
RFQ
MCDONNELL & MILLER -

Series FS25 General Purpose Flow Switch

StyleModelSwitch EnclosureEnclosure RatingHousing MaterialSwitch TypeConnection SizeConnection TypeFor Pipe SizeMin. Flow RatePrice
AFS251NEMA 1NEMA 1BrassSPDT1"NPT1", 6"5.8 GPM€534.97
BFS254NEMA 4NEMA 4BrassSPDT1"NPT1", 6"5.8 GPM€681.15
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Series FS7 Switch Liquid Flow

StyleModelSwitch EnclosureMin. Ambient Temp.Max. PressureMedia Temp. RangeEnclosure RatingHousing MaterialSwitch TypeConnection SizePrice
AFS7-4SNEMA 132°F1000 psi32°F to 300°FNEMA 1BrassSPDT1 1/4"€1,729.45
BFS7-4WNEMA 4X-65°F300 psi-65°F to +300°FNEMA 4XBrassSPDT1 1/4"€1,191.36
CFS7-4SWNEMA 4X-65°F1000 psi-65°F to +300°FNEMA 4XBrassSPDT1 1/4"€1,955.56
DFS7-4ENEMA 7/932°F300 psi32°F to 300°FNEMA 7, 9BrassSPDT1 1/4"€1,468.56
MCDONNELL & MILLER -

Series FS6 Switch Liquid Flow

McDonnell & Miller FS6 liquid flow switches are designed to monitor the flow of liquids, such as water or oil, in pipes and systems. These liquid flow switches are highly sensitive and used in cooling systems, booster pumps, water treatment systems and compressors. They have a sealed compartment that protects the switch from liquids and a sensitivity adjustment screw to prevent false tripping of the flow switch. These liquid flow switches serve as a crucial safeguard, preventing damage and potential hazards caused by insufficient or excess liquid flow. They can be operated at temperatures ranging from 32 to 225 degrees F and can withstand pressures up to 100 psi. These liquid flow switches are integrated with an SPDT switch for monitoring the direction of liquid flow.

StyleModelSwitch TypeConnection SizeFor Pipe SizeMax. Flow RateSwitch EnclosureEnclosure RatingOverall LengthConnection TypePrice
AFS6-3/4SPDT3/4"3/4"-NEMA 1NEMA 13.7"NPT€996.27
AFS6-W-3/4SPDT3/4"3/4"0.12 GPMNEMA 4XNEMA 4-X5"NPT€1,111.64
AFS6-1SPDT1"1"0.12 GPMNEMA 1NEMA 13.7"NPT€998.99
BFS6-W-1SPDT1"1"0.12 GPMNEMA 4XNEMA 4X5"NPT€1,114.66
CFS6SPDT Snap Switch3/4", 1"-50 GPM-NEMA 1-NPT-
RFQ
MCDONNELL & MILLER -

Series AF Air Flow Switch

StyleModelHousing MaterialSwitch TypeMax. Ambient Temp.Operating Velocity RangeOverall HeightOverall WidthConnection SizeConnection Type
AAFE-1AluminumSPDT275°F350-1900 FPM12 1/2"5 4/5"1/2"NPT
RFQ
BAF2BrassSPDT Snap Switch300°F380-1250 FPM11 1/8"4 3/8"--
RFQ
JOHNSON CONTROLS -

Flow Switches

StyleModelConnection SizeFor Pipe SizeMin. Flow RateMax. Flow RateHousing MaterialSwitch EnclosureMedia Temp. RangeOverall HeightPrice
AFS7-4SE1 1/4"1 1/4"4.8 GPM7.7 GPMBrassNEMA 7/932°F to 300°F13 4/5"-
RFQ
BFS7-4D1 1/4"1 1/4"4.8 GPM7.7 GPMStainless Steel-32°F to 300°F13 3/5"€1,417.87
CFS4-3DS1"1"6 GPM10.2 GPM--32°F8 2/5"-
RFQ
CFS4-3S1"1"6 GPM10.2 GPMStainless Steel-32°F to 300°F8 2/5"€1,787.95
DFS4-3RP-T1"1"6 GPM10.2 GPM--+32°F to +300°F8 2/5"€753.23
EFS4-3D1"1"6 GPM10.2 GPM--32°F to 300°F8 2/5"€937.65
FFS8-WJ1"1"4.9 GPM17.6 GPM-NEMA 4X32°F to 225°F8 2/5"€850.30
GFS4-3T3-11"1"2 GPM4.5 GPM--32°F6.9"€920.45
HFS4-3T3-3/43/4"3/4"2 GPM4.5 GPM--32°F6.9"-
RFQ
IFS5-D-3/43/4"3/4"1.5 GPM15 GPMBrass-32°F5.1"-
RFQ
JFS4-3T1-3/43/4"3/4"5 GPM11.5 GPM--32°F6.9"€898.79
MCDONNELL & MILLER -

Paddle Kits

StyleModelMPNPricePkg. Qty.
AFS4-15SSFS4-15SS€70.704
BFS7-4-28FS7-4-28€46.122
BFS7-28SFS7-28S€80.132
MCDONNELL & MILLER -

Air Flow Switch

ModelItemPrice (ex. VAT)Pkg. Qty.
AF1-SCH9NXF€1,063.63
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