Flow

Here you will find flow meters and indicators, switches and air meters. They are used in boilers, hot water heaters and chillers, pumps, motors, auxiliary pumps and engines and for general use. Find a wide selection to fit your application.


Dwyer SFI-550-1/2 Sight Window, 1/2" NPT, Plated Steel-

Dwyer SFI-550-1/2 Sight Window, 1/2" NPT, Plated Steel
Model: SFI-550-1/2

Sale Price $28.91 USD
Regular Price $31.60 USD
Availability 3 Days

Qty:

Sale Price $28.91 USD
Regular Price $31.60 USD
Availability 3 Days
Quantity

Dwyer SFI-550-1-1/4 Sight Window, 1-1/4" NPT, Plated Steel-

Dwyer SFI-550-1-1/4 Sight Window, 1-1/4" NPT, Plated Steel
Model: SFI-550-1-1/4

Sale Price $73.98 USD
Regular Price $80.85 USD
Availability 1 to 2 Weeks

Qty:

Sale Price $73.98 USD
Regular Price $80.85 USD
Availability 1 to 2 Weeks
Quantity

Dwyer SFI-550-1-1/2 Sight Window, 1-1/2" NPT, Plated Steel-

Dwyer SFI-550-1-1/2 Sight Window, 1-1/2" NPT, Plated Steel
Model: SFI-550-1-1/2

Sale Price $91.64 USD
Regular Price $100.15 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $91.64 USD
Regular Price $100.15 USD
Availability 2 to 3 Weeks
Quantity

Dwyer SFI-550-1 Sight Window, 1" NPT, Plated Steel-

Dwyer SFI-550-1 Sight Window, 1" NPT, Plated Steel
Model: SFI-550-1

Sale Price $43.51 USD
Regular Price $47.55 USD
Availability 5 to 6 Weeks

Qty:

Sale Price $43.51 USD
Regular Price $47.55 USD
Availability 5 to 6 Weeks
Quantity

Dwyer SFI-500B-3/4 Sight Window, 3/4" NPT, Brass-

Dwyer SFI-500B-3/4 Sight Window, 3/4" NPT, Brass
Model: SFI-500B-3/4

Sale Price $93.92 USD
Regular Price $102.65 USD
Availability 1 to 2 Weeks

Qty:

Sale Price $93.92 USD
Regular Price $102.65 USD
Availability 1 to 2 Weeks
Quantity

Dwyer SFI-500B-2 Sight Window, 2" NPT, Brass-

Dwyer SFI-500B-2 Sight Window, 2" NPT, Brass
Model: SFI-500B-2

Sale Price $184.28 USD
Regular Price $201.40 USD
Availability 1 Week

Qty:

Sale Price $184.28 USD
Regular Price $201.40 USD
Availability 1 Week
Quantity

Dwyer SFI-500B-1-1/4 Sight Window, 1 1/4" NPT, Brass-

Dwyer SFI-500B-1-1/4 Sight Window, 1 1/4" NPT, Brass
Model: SFI-500B-1-1/4

Sale Price $150.01 USD
Regular Price $163.95 USD
Availability 1 to 2 Weeks

Qty:

Sale Price $150.01 USD
Regular Price $163.95 USD
Availability 1 to 2 Weeks
Quantity

Dwyer SFI-500B-1-1/2 Sight Window, 1-1/2", Brass-

Dwyer SFI-500B-1-1/2 Sight Window, 1-1/2", Brass
Model: SFI-500B-1-1/2

Sale Price $165.62 USD
Regular Price $181.00 USD
Availability 1 to 2 Weeks

Qty:

Sale Price $165.62 USD
Regular Price $181.00 USD
Availability 1 to 2 Weeks
Quantity

Dwyer SFI-500B-1 Sight Window, 1" NPT, Brass-

Dwyer SFI-500B-1 Sight Window, 1" NPT, Brass
Model: SFI-500B-1

Sale Price $115.43 USD
Regular Price $126.15 USD
Availability 1 to 2 Weeks

Qty:

Sale Price $115.43 USD
Regular Price $126.15 USD
Availability 1 to 2 Weeks
Quantity

Dwyer SFI-400SS-4 Indicator, Sight Flow, 4" NPT, Tube, 316SS Body-

Dwyer SFI-400SS-4 Indicator, Sight Flow, 4" NPT, Tube, 316SS Body
Model: SFI-400SS-4

Sale Price $2646.50 USD
Regular Price $2892.35 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $2646.50 USD
Regular Price $2892.35 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400SS-3/4 Indicator, Sight Flow, 3/4"NPT, Tube, 316SS Body-

Dwyer SFI-400SS-3/4 Indicator, Sight Flow, 3/4"NPT, Tube, 316SS Body
Model: SFI-400SS-3/4

Sale Price $781.73 USD
Regular Price $854.35 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $781.73 USD
Regular Price $854.35 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400SS-3 Indicator, Sight Flow, 3" NPT, Tube, 316SS Body-

Dwyer SFI-400SS-3 Indicator, Sight Flow, 3" NPT, Tube, 316SS Body
Model: SFI-400SS-3

Sale Price $1841.71 USD
Regular Price $2012.80 USD
Availability 3 to 4 Weeks

Qty:

Sale Price $1841.71 USD
Regular Price $2012.80 USD
Availability 3 to 4 Weeks
Quantity

Dwyer SFI-400SS-2 Indicator, Sight Flow, 2" NPT, Tube, 316SS Body-

Dwyer SFI-400SS-2 Indicator, Sight Flow, 2" NPT, Tube, 316SS Body
Model: SFI-400SS-2

Sale Price $1172.34 USD
Regular Price $1281.25 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $1172.34 USD
Regular Price $1281.25 USD
Availability 2 to 3 Weeks
Quantity

Dwyer SFI-400SS-1/2 Indicator, Sight Flow, 1/2" NPT, Tube, 316SS Body-

Dwyer SFI-400SS-1/2 Indicator, Sight Flow, 1/2" NPT, Tube, 316SS Body
Model: SFI-400SS-1/2

Sale Price $720.56 USD
Regular Price $787.50 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $720.56 USD
Regular Price $787.50 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400SS-1-1/4 Indicator, Sight Flow, 1-1/4" NPT, Tube, 316SS Body-

Dwyer SFI-400SS-1-1/4 Indicator, Sight Flow, 1-1/4" NPT, Tube, 316SS Body
Model: SFI-400SS-1-1/4

Sale Price $931.47 USD
Regular Price $1018.00 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $931.47 USD
Regular Price $1018.00 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400SS-1-1/2 Indicator, Sight Flow, 1-1/2" NPT, Tube, 316SS Body-

Dwyer SFI-400SS-1-1/2 Indicator, Sight Flow, 1-1/2" NPT, Tube, 316SS Body
Model: SFI-400SS-1-1/2

Sale Price $1013.64 USD
Regular Price $1107.80 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $1013.64 USD
Regular Price $1107.80 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400SS-1 Indicator, Sight Flow, 1" NPT, Tube, 316SS Body-

Dwyer SFI-400SS-1 Indicator, Sight Flow, 1" NPT, Tube, 316SS Body
Model: SFI-400SS-1

Sale Price $897.16 USD
Regular Price $980.50 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $897.16 USD
Regular Price $980.50 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400F-4 Indicator, Sight Flow,  Tube, 316SS Body-

Dwyer SFI-400F-4 Indicator, Sight Flow, Tube, 316SS Body
Model: SFI-400F-4

Sale Price $2828.72 USD
Regular Price $3091.50 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $2828.72 USD
Regular Price $3091.50 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400F-3 Indicator, Sight Flow, Tube, 316SS Body-

Dwyer SFI-400F-3 Indicator, Sight Flow, Tube, 316SS Body
Model: SFI-400F-3

Sale Price $1956.13 USD
Regular Price $2137.85 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $1956.13 USD
Regular Price $2137.85 USD
Availability 8 to 9 Weeks
Quantity

Dwyer SFI-400F-2 Indicator, Sight Flow, Tube, 316SS Body-

Dwyer SFI-400F-2 Indicator, Sight Flow, Tube, 316SS Body
Model: SFI-400F-2

Sale Price $1302.14 USD
Regular Price $1423.10 USD
Availability 8 to 9 Weeks

Qty:

Sale Price $1302.14 USD
Regular Price $1423.10 USD
Availability 8 to 9 Weeks
Quantity

We Ship Free on Orders Over $99 within Canada