flow meters

Reliable HVAC performance starts with proper flow balance. Whether you're commissioning a new hydronic installation or troubleshooting an existing system, the right flow control tools help verify flow rates, support efficient operation and keep systems running as designed. Blackhawk Supply has a wide selection of HVAC flow control valves for sale to help contractors optimize system performance. From verifying flow rates to advanced diagnostic testing, our collection includes the specialized tools professionals rely on to complete critical tasks.

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Dwyer RMA-21 Flowmeter | range 1-10 LPM air | no valve. | Blackhawk Supply

RMA-21 | Flowmeter | range 1-10 LPM air | no valve. | Dwyer

Brand: Dwyer

SKU: RMA-21

Dwyer PE-J-3 PVC orifice plate flowmeter | 4" line size | 2.800" bore | 0.7 Beta | water capacity: 320" d.p. W/C | 547.11 GPM flow; air capacity: 1380.03 SCFM @ 14.7 psia | 2373.02 SCFM @ 20 psig | 4553.68 SCFM @ 100 psig; 3 lb. | Blackhawk Supply

PE-J-3 | PVC orifice plate flowmeter | 4" line size | 2.800" bore | 0.7 Beta | water capacity: 320" d.p. W / C | 547.11 GPM flow; air capacity: 1380.03 SCFM @ 14.7 psia | 2373.02 SCFM @ 20 psig | 4553.68 SCFM @ 100 psig; 3 lb. | Dwyer

Brand: Dwyer

SKU: PE-J-3

Dwyer TUF-200-MD Tenant ultrasonic BTU flowmeter | DN20 pipe size and 2.5 m3/h permanent flow rate with Modbus® communication | Blackhawk Supply

TUF-200-MD | Tenant ultrasonic BTU flowmeter | DN20 pipe size and 2.5 m3 / h permanent flow rate with Modbus® communication | Dwyer

Brand: Dwyer

SKU: TUF-200-MD

Dwyer UFM2-14 Compact ultrasonic flowmeter | pulse and 4-20 mA outputs | 3/4 to 4" (25 to 115 mm) pipe | Blackhawk Supply

UFM2-14 | Compact ultrasonic flowmeter | pulse and 4-20 mA outputs | 3 / 4 to 4" (25 to 115 mm) pipe | Dwyer

Brand: Dwyer

SKU: UFM2-14

Dwyer TUF-150-BN Tenant ultrasonic BTU flowmeter | DN15 pipe size and 1.5 m3/h permanent flow rate with BACnet® communication. | Blackhawk Supply

TUF-150-BN | Tenant ultrasonic BTU flowmeter | DN15 pipe size and 1.5 m3 / h permanent flow rate with BACnet® communication. | Dwyer

Brand: Dwyer

SKU: TUF-150-BN

Dwyer A-IEF-KIT Series IEF Insertion Electromagnetic Flowmeter IEF/IEFB set-up kit including field set-up display, pipe thickness gauge and pipe circumference measuring tape | Blackhawk Supply

A-IEF-KIT | Series IEF Insertion Electromagnetic Flowmeter IEF / IEFB set-up kit including field set-up display, pipe thickness gauge and pipe circumference measuring tape | Dwyer

Brand: Dwyer

SKU: A-IEF-KIT

Belimo FM150 Flow Meter NPT 1 1/2" | Forged Brass | Nickel Plated | 47.5 GPM | Power Supply 24V | Output signal 0 - 10VDC | Blackhawk Supply

FM150 | Flow Meter NPT 1 1 / 2" | Forged Brass | Nickel Plated | 47.5 GPM | Power Supply 24V | Output signal 0 - 10VDC | Belimo (OBSOLETE)

Brand: Belimo

SKU: FM150

Dwyer MTF-2131 150 mm frame | isolated pattern | 3 tube capacity | 316 SS wetted parts. | Blackhawk Supply

MTF-2131 | 150 mm frame | isolated pattern | 3 tube capacity | 316 SS wetted parts. | Dwyer

Brand: Dwyer

SKU: MTF-2131

Dwyer PE-G-2 PVC orifice plate flowmeter | 2-1/2" line size | 1.250" bore | 0.5 Beta | water capacity: 100" d.p. W/C | 55.54 GPM flow; air capacity: 197.54 SCFM @ 14.7 psia | 317.58 SCFM @ 20 psig | 590.91 SCFM @ 100 psig; 2 lb. | Blackhawk Supply

PE-G-2 | PVC orifice plate flowmeter | 2-1 / 2" line size | 1.250" bore | 0.5 Beta | water capacity: 100" d.p. W / C | 55.54 GPM flow; air capacity: 197.54 SCFM @ 14.7 psia | 317.58 SCFM @ 20 psig | 590.91 SCFM @ 100 psig; 2 lb. | Dwyer

Brand: Dwyer

SKU: PE-G-2

Dwyer DR10082 Direct reading glass flowmeter | 316 SS float | flow rate 20 SCFH air. | Blackhawk Supply

DR10082 | Direct reading glass flowmeter | 316 SS float | flow rate 20 SCFH air. | Dwyer

Brand: Dwyer

SKU: DR10082

Dwyer DR200182 Direct reading glass flowmeter | 316 SS float | flow rate 3.8 SCFH air. | Blackhawk Supply

DR200182 | Direct reading glass flowmeter | 316 SS float | flow rate 3.8 SCFH air. | Dwyer

Brand: Dwyer

SKU: DR200182

Veris U001-0044 Flow,SDI,HotTap,SS,12-36,4-20mA,No LCD | Blackhawk Supply

U001-0044 | Flow, SDI, HotTap, SS, 12-36, 4-20mA, No LCD | Veris

Brand: Veris

SKU: U001-0044

Midland Metal Mfg. 940131 3/8 FIPXFIP FULL PORT GATE VLV | Blackhawk Supply

940131 | 3 / 8 FIPXFIP FULL PORT GATE VLV | Midland Metal Mfg.

Brand: Midland Metal Mfg.

SKU: 940131

Dwyer RMA-6 Flowmeter | range 2-20 SCFH air | no valve. | Blackhawk Supply

RMA-6 | Flowmeter | range 2-20 SCFH air | no valve. | Dwyer

Brand: Dwyer

SKU: RMA-6

Dwyer MTF-1661 65 mm frame | isolated pattern | 6 tube capacity | aluminum wetted parts. | Blackhawk Supply

MTF-1661 | 65 mm frame | isolated pattern | 6 tube capacity | aluminum wetted parts. | Dwyer

Brand: Dwyer

SKU: MTF-1661

Veris BGR-8340BN/MB-03 Trans | Freq in | BTU out | W-Tight plast encl | Blackhawk Supply

BGR-8340BN / MB-03 | Trans | Freq in | BTU out | W-Tight plast encl | Veris (OBSOLETE)

Brand: Veris

SKU: BGR-8340BN/MB-03

Chicago Valves 21411100 10" CAST STEEL CLASS 150 FLANGED GATE VALVE | SERIES 21 | Blackhawk Supply

21411100 | 10" CAST STEEL CLASS 150 FLANGED GATE VALVE | SERIES 21 | Chicago Valves

Brand: Chicago Valves

SKU: 21411100

Dwyer TE-M-1 PTFE orifice plate flowmeter | 8" line size | 2.400" bore | 0.3 Beta | water capacity: 20" d.p. W/C | 87.95 GPM flow; air capacity: 333.87 SCFM @ 14.7 psia | 517.25 SCFM @ 20 psig | 945.28 SCFM @ 100 psig; 6 lb. | Blackhawk Supply

TE-M-1 | PTFE orifice plate flowmeter | 8" line size | 2.400" bore | 0.3 Beta | water capacity: 20" d.p. W / C | 87.95 GPM flow; air capacity: 333.87 SCFM @ 14.7 psia | 517.25 SCFM @ 20 psig | 945.28 SCFM @ 100 psig; 6 lb. | Dwyer

Brand: Dwyer

SKU: TE-M-1

Dwyer VFCII-142 Flowmeter | range 1-10 GPM water. | Blackhawk Supply

VFCII-142 | Flowmeter | range 1-10 GPM water. | Dwyer

Brand: Dwyer

SKU: VFCII-142

Veris BGR-8SDI0H2N50-0200 Meter | SDI | SS | 12"to36" | HTp | BiDir | 4-20 | Blackhawk Supply

BGR-8SDI0H2N50-0200 | Meter | SDI | SS | 12"to36" | HTp | BiDir | 4-20 | Veris (OBSOLETE)

Brand: Veris

SKU: BGR-8SDI0H2N50-0200

Dwyer IEFB-LN-CND-R10-LCD Insertion Electromagnetic energy system | 4 to 10" (100 to 250MM) pipe | 1% FS | 1" male NPT process connections | 1/2" female NPT | (2) 10' (3 m) PT temperature sensors with hot-tap thermowells | LCD display | Blackhawk Supply

IEFB-LN-CND-R10-LCD | Insertion Electromagnetic energy system | 4 to 10" (100 to 250MM) pipe | 1% FS | 1" male NPT process connections | 1 / 2" female NPT | (2) 10' (3 m) PT temperature sensors with hot-tap thermowells | LCD display | Dwyer

Brand: Dwyer

SKU: IEFB-LN-CND-R10-LCD

Veris U001-0138 Flow | Transmitter | BTU | BN-MB | Plastic Enc | Blackhawk Supply

U001-0138 | Flow | Transmitter | BTU | BN-MB | Plastic Enc | Veris (OBSOLETE)

Brand: Veris

SKU: U001-0138

Dwyer DR104172 Direct reading glass flowmeter | 316 SS float | flow rate 0.9 GPH water. | Blackhawk Supply

DR104172 | Direct reading glass flowmeter | 316 SS float | flow rate 0.9 GPH water. | Dwyer

Brand: Dwyer

SKU: DR104172

Dwyer TE-N-3 PTFE orifice plate flowmeter | 10" line size | 7.000" bore | 0.7 Beta | water capacity: 320" d.p. W/C | 3421.26 GPM flow; air capacity: 8626.42 SCFM @ 14.7 psia | 14846.80 SCFM @ 20 psig | 28506.17 SCFM @ 100 psig; 8 lb. | Blackhawk Supply

TE-N-3 | PTFE orifice plate flowmeter | 10" line size | 7.000" bore | 0.7 Beta | water capacity: 320" d.p. W / C | 3421.26 GPM flow; air capacity: 8626.42 SCFM @ 14.7 psia | 14846.80 SCFM @ 20 psig | 28506.17 SCFM @ 100 psig; 8 lb. | Dwyer

Brand: Dwyer

SKU: TE-N-3

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Veris H321 Hawkeye 0 to 800 A Input 4 to 20 mA DC Output High Analog Current Transducer, Split-Core, 2.9 x 2-1/2 in | Blackhawk Supply

H321 | Hawkeye 0 to 800 A Input 4 to 20 mA DC Output High Analog Current Transducer, Split-Core, 2.9 x 2-1/2 in | Veris

Brand: Veris

SKU: H321

Viconics VT8650U5000B Roof Top & Heat Pump Unit Controller w/ IAQ, Economizer, Humidity & Scheduling | Blackhawk Supply

VT8650U5000B | Roof Top & Heat Pump Unit Controller w/ IAQ, Economizer, Humidity & Scheduling | Viconics

Brand: Viconics

SKU: VT8650U5000B

Danfoss 065B8900 3/4" NPT C20 THERMOSTATIC DAMPER | Blackhawk Supply

065B8900 | 3/4" NPT C20 THERMOSTATIC DAMPER | Danfoss

Brand: Danfoss

SKU: 065B8900

Contemporary Controls EISK5-GT Skorpion 5-Port GigE Switch | Blackhawk Supply

EISK5-GT | Skorpion 5-Port GigE Switch | Contemporary Controls

Brand: Contemporary Controls

SKU: EISK5-GT

Belimo LF120-S US Damper Actuator | 35 in-lb | Spg Rtn | 120V | On/Off | Blackhawk Supply

LF120-S US | Damper Actuator | 35 in-lb | Spg Rtn | 120V | On/Off | Belimo

Brand: Belimo

SKU: LF120-S US

Viconics VT7652B5031 Thermostat | Roof | 2 Heat Cntct | 2 Cool Cntct | Programmable | Blackhawk Supply

VT7652B5031 | Thermostat | Roof | 2 Heat Cntct | 2 Cool Cntct | Programmable | Viconics

Brand: Viconics

SKU: VT7652B5031

QAA2280.FWSC | Room Temp Sensor, Full Feature, Siemens Logo, Tool Port, TEC Controllers | Siemens

Brand: Siemens

SKU: QAA2280.FWSC

Square D MD3604X Switch Motor Disconnect 60A 3P NEMA 4X | Blackhawk Supply

MD3604X | Switch Motor Disconnect 60A 3P NEMA 4X | Square D

Brand: Square D

SKU: MD3604X

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