Both reverse osmosis (RO) and de-ionization (DI) are techniques to purify water. Reverse osmosis relies on forcing water through a semi-permeable membrane to filter out impurities and is commonly used in desalinization and the production of drinking water. De-ionization is a chemical process that removes most chemical ions from water. Both techniques are commonly used in commercial and industrial applications as a way to remove contaminants that may interfere with processes, or leave residues upon evaporation. They are particularly common in the semiconductor, food/beverage, and pharmaceutical industries which need large amounts of very pure water.

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Rosemount 8800D Series Vortex Flow Meter
Wafer or flanged style Vortex flow meters available with multivariable output & internal temperature sensor option
Select options for pricing
Rosemount Analytical Model 1056 Dual Input Analyzer
Dual input analyzer offers a wide range of measurement choices supporting most industrial, commercial & municipal applications
$1,191.00
In Stock
GPI TM Series Water Meter
Industrial economy turbine flow meter for use with water applications, 1/2 inch to 4 inch meters, flow ranges to 600 GPM
$392.00
$313.60
In Stock
King Instrument 7520 / 7530 Series Rotameter
Machined cast acrylic block construction variable area flow meter for water or air, with a direct reading scale
$62.00
In Stock
Micro Motion ELITE Coriolis Flow Meters
High precision flow and density measurement solution with very low pressure drop for liquids, gases, or slurries
$7,998.00
King Instrument 7459 Series Rotameter
Aluminum side plate rotameter with a 250mm scale borosilicate glass metering tube
$782.00
Blancett 1100 Turbine Flow Meter
Inline turbine flow meters for corrosive and abrasive fluid measurement with flow range up to 5000 GPM
$394.00
In Stock
Dynasonics TFX Ultra Ultrasonic Flow Meter
Clamp-on ultrasonic flow and energy meters for liquids
$2,240.00
Krohne H250-RR Variable Area Flow Meter
Rugged, all-metal design ensures high resistance to pressure, temperature and media
$1,040.00
King Instrument 7200 Series Rotameter
General purpose rotameter with machined cast acrylic metering tube, replaces the IK55-A
$99.00
In Stock
Rosemount Analytical Model 3900 pH/ORP Sensor
3900 and 3900VP general purpose pH/ORP sensors
$355.00
In Stock
GPI G2 Turbine Flow Meter
Flow range from 1 to 10 up to 20 to 200 GPM (formerly known as the RG45-B)
$876.00
$700.80
In Stock
Rosemount Analytical 400 / 400VP Endurance Conductivity Sensor
Screw-in general purpose conductivity sensors with Variopol quick disconnect fitting
$504.00
In Stock
Micro Motion F-Series Coriolis Flow Meters
Highly accurate sensors for mass flow, volume flow, and density measurement in a cleanable compact design
$6,261.00
Dynasonics DXN Ultrasonic Flow Meter
Portable ultrasonic flow and energy meter, available with doppler, transit time and liquid thermal flow technologies
$6,150.00
In Stock
Brooks Sho-Rate Model 1350 / 1355 Variable Area Flow Meter
Low flow glass tube flow meter, purge applications, ranges up to 34 gph and 140 scfh, interchangeable tubes and floats
$225.64
Krohne OPTISONIC 3400 Flow Meter
3 beam, inline, Ultrasonic Flow Meter designed for measuring homogeneous conductive and non-conductive liquids
$1,825.00
GF Signet 2537 Paddlewheel Flow Meter
Low flow capable flow meter, as low as 0.3ft/s with choice of output, can install into 0.5 to 8 inch pipes
$672.00
$604.80
In Stock
Krohne OPTIMASS 6000 Coriolis Mass Flow Meter
High performance mass flow meter for extended temperature applications
$5,171.00
Rosemount Analytical 56 Dual Input Analyzer
High resolution full color screen, local operator interface, 480 x 272 pixel display
$1,895.00
Greyline Instruments PTFM 1.0 Ultrasonic Flow Meter
Portable transit time flow meter for accurate flow measurements of clean liquids with less than 2% solids or gas bubbles
$4,295.00
In Stock
GF Signet 2536 Rotor-X Paddle Wheel Flow Sensor
Integral, remote, or wet-tap paddle wheel flow sensor, operating range of 0.3 to 20ft/s (0.1 to 6m/s)
$356.00
$320.40
In Stock
Krohne OPTIMASS 7000 Coriolis Mass Flow Meter
The optimum meter for demanding mass flow and density measurement applications of fluids, gases and solids
$5,539.00
Micro Motion R-Series Coriolis Flow Meters
Flow and density measurement in a low footprint and drainable design for general process, water, and non-critical applications
$4,956.00
Rosemount Analytical 1066 Liquid Analytical Transmitter
Loop-powered transmitter measures pH, ORP, conductivity, resistivity, oxygen, free chlorine, total chlorine, monochloramine and ozone
$1,855.00
King Instrument 7510 / 7511 Series Rotameter
Acrylic tube rotameters with in-line connections, replaces the IK55-D
$58.00
GF Signet 515 Rotor-X Paddle Wheel Flow Sensor
Rotor-X paddle wheel flow sensors with sinusoidal frequency output
$352.00
$316.80
In Stock
King Instrument 7430 / 7440 Series Rotameters
Low-flow, borosilicate glass rotameters with optional alarm
$183.00
In Stock
Krohne DK32 / DK34 / DK37 Variable Area Flow Meters
Versatile, all-metal flow meters for liquid flow rates to 0.7 gpm and gas flow rates to 2.825 scfm
$849.00
Fuji Electric Time Delta-C Ultrasonic Flow Meter
Transit time, clamp-on flow meter for noninvasive liquid flow measurement
$2,249.00
In Stock
Blancett FloClean Turbine Flow Meter
316L stainless steel turbine flow meter for flow rates up to 400gpm, 3-A sanitary rating optional
$775.00
Hedland EZ-View Liquid Flow Meters
Polysulfone variable area flow meters for oil and water
$70.00
In Stock
GPI A1 Turbine Flow Meter
Flow range from 0.3 to 300 GPM (formerly known as the RG45-A)
$671.00
$536.80
Watlow Screw Plug Immersion Heater
Ideal for direct immersion heating of liquids
Call for pricing
Krohne OPTISONIC 6300 Stationary Clamp On Flow Meter
Clamp-on flow meter that can be fitted on the outside of piping to measure the flowrate of liquids
$3,410.00
Blancett B3000 Flow Monitor
A flexible, durable, easy-to-use platform for flow metering applications with 2 programmable status alarms
$525.00
In Stock
GF Signet 2850 Conductivity/Resistivity Sensor
Available in various configurations for maximum installation flexibility
$422.00
$379.80
In Stock
Gems FT-330 Series Turbine Flow Meter
Highly accurate and repeatable turbine flow sensors designed for low flow OEM applications.
$117.00
In Stock
Brooks Model 3750 Variable Area Flow Meters
All metal variable area flow meter, flow ranges up to 100 I/h or 26 GPH, 316 stainless steel or monel K-500 parts
$917.88
Rosemount 8600 Series Vortex Flow Meter
Utility Vortex Flow Meter designed for general purpose, clean fluids and steam flow applications
$3,743.00
GF Signet 2819-2823 Conductivity/Resistivity Electrodes
Conductivity/resistivity sensors provide highly accurate sensing across a very broad dynamic range
$437.00
$393.30
In Stock
Rosemount Analytical Model 1057 Multi-Parameter Analyzer
Three-input intelligent analyzer monitors a wide range of water quality parameters
$1,930.00
Krohne H250-C Variable Area Flow Meter
Rugged, all-metal design with PTFE/ceramic liner for aggressive media
$2,168.00
King Instrument 7330 Series Rotameter
Polysulfone rotameters with PVC/PVDF union ends, replaces IK55-B
$258.00
Krohne OPTISWIRL 4200 Vortex Flow Meter
Gross and net heat measurement for hot water and steam, stable measurements under demanding process conditions
$2,535.00
Badger Meter RCT1000 Coriolis Flow Meter
Remote or integral mount sensor that simultaneously measures mass flow, fluid density and fluid temperature
$2,850.00
Micro Motion H-Series Coriolis Flow Meters
Hygienic, compact, and drainable Coriolis flow and density sensors for a wide variety measurement applications with sanitary requirements
$7,468.00
Gems FT-110 Series Turbine Flow Meter
Ideal for OEM applications involving low flow liquid monitoring
$126.00
In Stock
Universal Flow Monitors CoolPoint Flow Meter
Vortex shedding flow meter for low viscosity fluids
$465.00
King Instrument 7710 Series Rotameter
Stainless steel rotameters with magnetically-coupled dial-type indicators, replaces the IK55-F
$820.00
Brooks Sho-Rate Model 1250 / 1255 Variable Area Flow Meter
Sho-Rate low flow galss tube flow meter, 65 or 150mm scale lengths, 180° rotating lens, EZ-change design
$142.94
King Instrument 7610 Series Rotameter
Borosilicate glass rotameters with optional alarm, replaces the IK55-E
$688.00
E+H Proline Promass E 100 Coriolis Flow Meter
Ultra-compact transmitter designed for flow, density and temperature measurements
$5,565.06
King Instrument 7100 Series Rotameter
Stainless steel rotameter great for low flow, high pressure water or air applications
$832.00
Watlow Flange Immersion Heater
Flanged immersion heaters for heating liquids and gases in tanks and pressure vessels
Call for pricing
Brooks Sho-Rate Model 1358 Variable Area Flow Meters
Interchangeable tubes & floats, 10:1 rangeability, flow ranges up to 5 gpm and 15 scfm, single tube or multi-tube
$439.03
Blancett B2900 Flow Monitor
Offers advanced digital signal processing technology in a flexible, easy-to-access package
$625.00
In Stock
Krohne H250-F Variable Area Flow Meter
Rugged, all-metal flow meter for liquids, gases and saturated steam in hygienic applications
$1,921.00
Blancett B1500 Turbine Flow Meter
Highly accurate and reliable turbine flow meters offer an ideal solution for standard clean filtered liquid flow applications
$1,100.00
Rosemount Analytical 402 / 402VP Endurance Conductivity Sensor
Retractable, can be removed without shutting down and draining line
$1,163.00
Rosemount Analytical Model 403 / 403VP Endurance Conductivity Sensor
Tri-Clover Flange conductivity sensors designed for water-for-injection
$967.00
Gems FS-200 Series Flow Switch
Ideal for detection of improper flow rates in high volume lubrication, cooling or process systems
$232.00
Greyline Instruments PT400 Ultrasonic Flow Meter
Portable transit time flow meter is ideal for spot checks or for extended operation as a 4-20mA flow transmitter
$3,795.00
Rosemount Analytical Model 3200HP pH Sensor
High purity water pH sensor with pHaser flowing junction, Accuracy: ±0.05 pH, conductivity range: less than 0.4 µS/cm
$1,595.00
King Instrument 7460 Series Rotameter
Rotameter for gases or liquids with 75mm scale Borosilicate Kinglass metering tube
$371.00
Alicat Scientific Volumetric Liquid Flow Meters and Controllers
Measures differential pressure within a laminar flow region to determine volumetric flow rate
$1,165.00
GF Signet 2260 Ultrasonic Level Transmitters
2-wire compact transmitters, non-contact level metering, level, volume and open channel flow
$1,130.00
$1,017.00
Brooks Quantim Coriolis Mass Flow Controllers & Meters
Low flow coriolis mass flow measurement and control, range from 0.001 up to more than 27 kg/hr, proprietary optical sensing technique
$6,461.91
Gems FS-4 Series Flow Switch
Makes flow protection economical for a broad range of industrial applications
$100.00
Gems RFO Series Paddlewheel Flow Meter
Paddlewheel flow meter with high visibility rotors and 4.5 to 24 VDC Pulse Output
$133.00
Krohne Altosonic V12 Ultrasonic Gas Flowmeter
12-chord ultrasonic gas flowmeter for custody transfer
Call for pricing
E+H Proline Promass E 200 Coriolis Flow Meter
Loop-powered flow meter that accurately measures liquids and gases in a wide variety of applications
$5,859.23
Kobold RCD Series Differential Pressure Flow Meter
Differential pressure flow meters for liquids and gases, replaces the OK10-CLC
$1,056.00
Gems FS-380 Series Flow Switch
Compact flow switch for inline pressures up to 1500 psi
$123.00
Gems LS-270 Series Level Switch
Bracket mounted level switch with slosh shield to minimize turbulence
$165.00
In Stock
Krohne DK Series Glass Cone Flow Meters
Glass cone variable area flow meters for low flow liquid and gas applications
Call for pricing
King Instrument 7650 Series Rotameter
Chemically resistant, borosilicate glass tube meter series for liquid service
$356.00
GPI GSCPS Series Turbine Flow Meter
High Temperature precision turbine flow meters with sanitary clamp process connection with 3-A sanitary rating
$2,225.00
$1,780.00
Georg Fischer Type 104 Ball Valve
Electrically Actuated Ball Valve for on/off control, Sizes from 1/2" to 2", manual overdrive, designed for light duty applications
$303.00
$272.70
Georg Fischer Type 561 / 562 Check Valves
Self-closing check valve, corrosion-resistant and high pressure rating, 3/8 to 4 inch valve sizes, with or without spring
$56.00
$50.40
GF Signet 2839-1V to 2842-1V Conductivity Electrodes
Compact 316 SS electrodes with injection molded PVDF process connections and insulators, made for small pipes
$376.00
$338.40
Gems FT-210 Series Turbine Flow Meter
Proven turbine technology in a small package for low flow applications
$126.00
King Instruments 7310 Rotameter
Molded Polysulfone rotameter with 304 stainless steel case for lighter duty applications where a case enclosed meter is preferred
$496.00
Georg Fischer Type 233 Ball Valve
Pneumatically Actuated Ball Valve, sizes 3/8 to 4 inch, Socket or flanged connection ends, PTFE seat
$388.00
$349.20
Georg Fischer Type 375 Ball Valve
Manual ball valves with true union design
$50.00
$45.00
In Stock
GF Signet 2000 MicroFlow Paddle Wheel Flow Sensor
Paddle wheel flow sensor for clear or dark liquids
$479.00
$431.10
King Instrument 7450 Series Rotameter
Rotameter with 75 or 150mm borosilicate glass metering tube
$414.00
King Instrument 7480 Series Rotameter
Borosilicate glass metering tube with 250mm scale, NPT or flange & vertical or horizontal connections
$648.00
GPI G Series Turbine Flow Meter
Precision turbine flow meters with NPT, BSP or ISO process connection
$1,256.00
$1,004.80
King Instrument 7910 Series Rotameter
Borosilicate glass rotatmeters with optional alarm, 250mm scale glass tube & 304 stainless steel case
$1,030.00
In Stock
W.E. Anderson WE04 Ball Valves
Flanged, 2-piece stainless steel ball valve with optional pneumatic or electric actuators
$119.00
Greyline Instruments PSL 5.0 Level Controller
Pump and lift station level controller with 6 independently programmable control relays
$1,975.00
Rosemount Analytical Model 404 Endurance Low Flow Conductivity Sensor
Combines the conductivity sensor with a flow cell
$696.00
W.E. Anderson TDFS Flow Switch
Non-mechanical, thermal dispersion flow switch with low pressure drop and long term reliability
Select options for pricing
GPI GSCP Series Turbine Flow Meter
Precision turbine flow meters with Tri-Clover sanitary clamp process connection
$1,625.00
$1,300.00
King Instrument 7470 Series Rotameter
127mm scale glass tube rotameter available with NPT or flange connections
$575.00
Brooks Model 1306 Variable Area Flow Meter
Glass tube variable Area flow meter, o-ring seal construction, up to 590 gph & up to 39 scfm
$653.44
Horiba LAQUAact EC-110 Meter
Measures conductivity, resistivity & TDS, with IP67 protection & built-in memory with up to 1,000 data points
$625.00
GF Signet 2507 Mini Flow Sensor
Mini flow sensor with free-running rotor driven by fluid flow
$1,018.00
$916.20
Badger Meter Series 4000 Flow Sensor
Flow detection electronics can be serviced or replaced without opening the pipe, no exposure to wetted parts
$464.00
W.E. Anderson SBSV-B General-Service Solenoid Valves
Compact, two-way, normally-closed, guide-type, brass valves for air, gas, water and other liquid applications
$32.00
King Instrument 7720 Series Rotameter
Rugged PVC rotameters with magnetically-coupled dial-type indicator, replaces the IK55-G
$937.00
King Instrument 7750 Series Rotameter
Stainless steel rotameter with flange connections and optional 4-20mA transmitter
$1,137.00
W.E. Anderson WE02 Ball Valves
Full port 3-piece stainless steel ball valve for great flow rates with minimal pressure drop
Select options for pricing
W.E. Anderson WE01 Ball Valves
2-piece NPT stainless steel ball valve available with electric or pneumatic actuators
Select options for pricing
Georg Fischer Type 231 / 232 Ball Valve
Pneumatically Actuated Ball Valve, sizes 3/8 to 4 inch, Socket or flanged connection ends, PP or PVDF material options
$425.00
$382.50
GF Signet 2270 Ultrasonic Level Sensor
2 wire compact sensor, for single and multiple tank applications, non-contact level measuring
$866.00
$779.40
King Instruments Silver Series Flow Meter
Removable glass tube flow meters with powder-coated 304SS case & molded polycarbonate shield cover
$911.00
Rosemount Analytical Model 410VP PUR-SENSE Conductivity Sensor
Four electrode sanitary flange, initial calibration not required
$944.00
GF Signet 2280 Tuning Fork
Maintenance free vibrating principle, independent of the liquid conductivity, dielectric constant, viscosity, pressure and temperature
$468.00
$421.20
W.E. Anderson SSV-B General-Service Solenoid Valves
Compact, two-way, normally-open, guide-type valves with brass body
$54.00
W.E. Anderson WE34 Ball Valves
3-way stainless steel ball valve with flanged end connection
$325.00
Georg Fischer Type 240 Butterfly Valve
Pneumatically Actuated Butterfly Valve, sizes 2" to 12" glass filled polypropylene compatible
$580.00
$522.00
W.E. Anderson WE33 Ball Valves
3-way stainless steel ball valve with tri-clamp end connections
$442.00
Georg Fischer Type 244 Butterfly Valve
Pneumatically Actuated Lug Style Butterfly Valve, 2 to 12 inch valve sizes
$1,040.00
$936.00
W.E. Anderson WE03 Ball Valves
Cavity filled tri-clamp ball valve for sanitary applications
$108.00
Georg Fischer Type 578 Butterfly Valve
Lug style butterfly valve, double eccentric operating principle, 2 to 12 inch sizes available
$700.00
$630.00
Georg Fischer Type 285 Ball Valve
Pneumatically Actuated 3-Way Ball Valves, 3/8 to 2 inch valve sizes, CPVC
$610.00
$549.00
GF Signet 2282 Guided Float Switch
Optimized chemical compatibility, for small tanks, PP and PVDF version available
$69.00
$62.10
Georg Fischer Type 180 Ball Valve
Electrically actuated ball valve, 16 to 110mm sizes, polypropylene, emergency manual override
$1,076.00 to $2,860.00
$968.40 to $2,574.00
Georg Fischer Type 365 Butterfly Valve
Manually operated PTFE lined lug style butterfly valve with PFA encapsulated disc, pressures up to 150 psi
$1,918.00
$1,726.20
W.E. Anderson WE31 Ball Valves
3-way stainless steel ball valve with NPT end connections
$128.00
Rosemount Analytical pH Systems
3200HP pH system with or without panel/VP cable
$1,445.00