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  • Products
    • Air-Sediment Control & Expansion
      • Coalescing Air Separators
        • CRS Coalescing Removal Separator
      • Small Air Separators
        • EASB-JR Air Separator
        • EASB2-JR Air Separator
        • Enhanced Air Separator
        • Inline Air Separator
      • Tangential Air Separators
        • Rolairtrol Air Separator Hot & Chilled Water
        • Sediment Removal Separator
    • Boiler Feed & Condensate Pumping Packages
      • Boiler Feed Pumping Packages
        • Domestic Pump Boiler Feed Series CBEM
        • Domestic Pump Boiler Feed Series CBM
        • Domestic Pump Boiler Feed Series CM
        • Domestic Pump Boiler Feed Series CMED
        • Domestic Pump Boiler Feed Series CMED-eSV
        • Domestic Pump Boiler Feed Series CMHD
        • Domestic Pump Boiler Feed Series CMU
        • Domestic Pump Boiler Feed Series CSM
        • Domestic Pump Boiler Feed Series VCMD
        • Domestic Pump Boiler Feed Series WSC
        • Domestic Pump Boiler Feed Series WSS
      • Boiler Feed Units
        • Hoffman Specialty Series VBF Stock Boiler Feed Units
        • Hoffman Specialty Series HBF Boiler Feed Units
      • Combination Vacuum/Boiler Feed Units Pumping Packages
        • Domestic Pump Vacuum Heating Pump Series VCD/VCDS
        • Domestic Pump Vacuum Heating Pump Series VCMD
      • Condensate Pumping Packages
        • Domestic Pump Condensate Return Pump Series CB
        • Domestic Pump Condensate Return Pump Series CBE
        • Domestic Pump Condensate Return Pump Series CC
        • Domestic Pump Condensate Return Pump Series CED
        • Domestic Pump Condensate Return Pump Series CHD
        • Domestic Pump Condensate Return Pump Series CS
        • Domestic Pump Condensate Return Pump Series CU
        • Domestic Pump Consolitrol NEMA 2 UL Control Panels
        • Domestic Pump Consolitrol NEMA 4 or 12 UL Control Panels
        • Hoffman Speciality Series SCC Stock Condensate Return Units
        • Hoffman Specialty Watchman Series WC Condensate Units
        • Hoffman Specialty Watchman Series WCS Condensate Units
      • Domestic Pumps Clinical Vacuum Pumping Packages
        • Domestic Pump Clinical/Industrial Vacuum Units
      • Low NPSH Centrifugal Pumps
        • Domestic Pump Low NPSH Pumps – B Series, style PF-B
        • Domestic Pump Low NPSH Pumps – B Series, style PVF-B
        • Domestic Pump Low NPSH Pumps – Centriflo C17, style PF
        • Domestic Pump Low NPSH Pumps – Centriflo C17, style PVF
        • Domestic Pump Low NPSH Pumps – Centriflo C35, style PF
        • Domestic Pump Low NPSH Pumps – Centriflo C35, style PVF
        • Domestic Pump Low NPSH Pumps – Series DB
        • Domestic Pump Low NPSH Pumps – Series DB-F
        • Domestic Pump Low NPSH Pumps – Series HB-17
        • Domestic Pump Low NPSH Pumps – Series HB-35
      • Vacuum Heating Pumping Packages
        • Domestic Pump Vacuum Heating Pump Series VCL
        • Domestic Pump Vacuum Heating Pump Series VL/VLS
        • Domestic Pump Vacuum Heating Pump Series VLR/VLRS
    • Heat Exchangers
      • Plate Heat Exchangers
        • Brazed Plate Heat Exchanger
        • Brazed Plate Heat Exchanger Low Pressure
        • Brazed Plate Heat Exchanger MT
        • GPX Plate and Frame Heat Exchangers
        • Plate Design
      • Straight Tube Heat Exchangers
        • Aftercooler
        • Gas Cooler “GC”
        • Large Straight Tube Heat Exchangers
        • Straight Tube Design
      • U-Tube Heat Exchangers
        • Tank Heaters
        • U-Tube Design Type SU, WU, HTWU, DSU, DWU, DTC
    • HVAC/Plumbing Systems – Flow Control
      • Circuit Sensor
        • Circuit Sensor Flow Meter
      • Custom Coil Hook-Ups
        • Coil Hook-up Kits
        • Model UA Accessory Union
        • Model UBV Ball Shut-Off Valve
        • Model UBY Integrated Ball Shutoff Valve/Y Strainer
        • Steel Products and Kits
      • Manual Balance Valves
        • Circuit Setter Plus Calibrated Balance Valves
        • Venturi Balance and Flow Measurement Valve with Ball/Butterfly Valve
      • Pressure Independent Control Valves
        • Ultra Setter™ Pressure Independent Control Valve
      • Pressure Independent Flow Limiting Valves
        • Circuit Sentry
        • Circuit Sentry Low Flow
        • Circuit Sentry™ Flo-Setter™
    • Hydronic Heating/Plumbing Accessories
      • Airtrol Tank Fittings
        • Airtrol Tank Fittings
        • Tank Purge Valve for Non-Potable Water
      • Flow Control Valves
        • Check-Trol
        • Comfort-Trol Zone Control Valve (obsolete)
        • DB-3/4 – Differential Bypass Valve
        • Flo-Control Valves
        • Hydrotrol Flow Control Valves
        • Isolation Flange
      • Miscellaneous Hydronic Accessories
        • 97 Automatic Air Vent
        • 98 Automatic Brass Air Vent
        • AQS-1/2 and AQS-3/4 Aquastat
        • Coin-operated Air Vent
        • Model No. 107A High Capacity Air Vent
        • No. 17 SR and 17 Jr. Automatic Hot Water Air Valves
        • No. 26 Vacuum Breaker
        • No. 87, 67 and 7 Automatic Air Vents
        • Readout Kit
        • Readout Valve RV-125A and Readout Probe RP-250B
        • Thermoflo Balancer
        • Thermoflo Indicator
      • Monoflo Fittings
        • Copper Red Ring Monoflo Fittings
      • Pressure Reducing Valves
        • Pressure Reducing Valves
      • Primary – Secondary Headers (PSH)
        • PSH – Primary Secondary Header
      • Relief Valves
        • ASME Safety Relief Valves
        • Model 1170 ASME Relief Valve
        • Model 3301 ASME Relief Valve
        • Model 4100 Relief Valve
        • Model 790 ASME Relief Valve
      • Tanks
        • ASME Expansion Tanks – Series WTA Pre-Charged Tanks
        • ASME Pre-charged “B” and “D” Tanks
        • Compression Tank
        • Diaphragm Expansion Tanks – PT
        • HFT Diaphragm Tanks
        • Non-ASME Pre-Pressurized Tanks Series WT Pre-Charged Tanks
        • PTA Tanks
        • Well Tanks: Non-ASME Pre-Pressurized Tanks Series WTX
      • Zone Control Valves
        • Residential Controls – ZoneTrol™ II
        • Snap Zone Valve
        • ZoneTrol II AZ-1A
    • Package Pumping Systems
      • Glycol Make-up Packages
        • Glycol Solution/Water Make-up Unit
      • Heat Transfer Packages
        • Heat Transfer Package
        • Skid-Mounted Systems
      • Pressure Booster Packages
        • 70E – Pressure Booster
        • 70M – Constant speed booster pump package
        • 70M-MS Multi-Stage Pressure Booster
        • 70VS-MS Multi-Stage Pressure Booster
        • MiniBooster – Obsolete
        • MiniSpeed Pressure Booster
        • Model 70X Pressure Boosting System
        • TechnoForce
        • Technologic Constant Speed Pump Controller
      • Variable Speed Pumping Packages
        • 70VS – Variable speed pumping application
        • ABB model ACS550 Variable Frequency Drives
        • Cabinet-Mounted Systems
        • Frame-Mounted Systems
        • Sensors/Transmitters
        • Technologic 502
        • Technologic 5500
        • Technologic 5500 Series Variable Primary Pump and Valve Controller
      • Zone Bridge Valve Control Systems
        • Zone Valve Controller – Technologic 5500 Series ZoneSav – OBSOLETE
    • Pumps & Circulators
      • Double Suction Pumps
        • Series HSC-S
        • Series HSC³
        • Series HSCS
        • Series VSC – Obsolete, replaced by Series VSX
        • Series VSCS – Obsolete, replaced by Series VSX
        • Series VSX Split-Case Pump
      • End Suction Pumps
        • Series 1510 Base Mounted End Suction Pumps
        • Series 1522
        • Series 1531
        • Series 1535
        • Series 3530
      • In-Line Pumps
        • Series 60
        • Series 80
        • Series 80-SC
        • Series 90 In-Line Mounted Centrifugal Pumps
        • Series e-90 Close Coupled In-Line Centrifugal Pumps
      • Multi-Stage Pumps
        • e-SV Series Multi-Stage Pumps
      • Pump Accessories
        • Suction Diffusers
        • Triple Duty Valves
      • Small Circulation Pumps (Boosters)
        • Autocirc Retrofit Instant Hot Water Pump
        • Condensate Removal Pump LS
        • ecocirc e3 Domestic Hot Water Circulators
        • ecocirc Heating Auto and Vario
        • ecocirc High Efficiency Low Lead Brass ECM Circulator Timer
        • ecocirc SC Solar Circulators
        • ecocirc wireless Instant Hot Water System – Available June 2013
        • ecocirc® B 23-5 ACT Undersink Pump for Potable Water Systems
        • Lead-Free* Isolation Flanges – NPT and Sweat Connections
        • Low Head Circulators – LR-15BWR, LR-20WR
        • NBF
        • NRF System Lubricated Iron Body Circulators
        • NRF-VS Variable Speed Control (obsolete)
        • Series 100 Inline Booster Pumps
        • Series LD3, HD3, PD
        • Series PL
        • Stainless Steel SSF-22, SSF-12, SSF-9 Circulator
        • TC-1 Automatic Timer Kit
      • Vertical Turbine Pumps
        • Submersible Vertical Turbine Pumps
        • Vertical Turbine Pumps
    • Steam Specialties
      • Regulators
        • Hoffman Specialty Series 1140 and 1141 Temperature Regulators
        • Hoffman Specialty Type 21 Tempering Valve
        • Series 2000 Pilot Operated Pressure and Temperature Regulators
      • Strainers
        • Hoffman Specialty Y-Strainers
      • Traps
        • Hoffman Specialty Float &Thermostatic BearTrap
        • Hoffman Specialty Inverted Bucket Steam Traps
        • Hoffman Specialty Steam Traps Series H
        • Hoffman Specialty Thermodisc BearTrap
        • Hoffman Specialty Thermostatic Steam Traps
      • Valves
        • Hoffman Specialty Drain Valve Model 793
        • Hoffman Specialty Thermodisc Drain Valve Model 656A
        • Radiator Supply Valve Model 185C
      • Vents
        • Hoffman Specialty Convector Steam Vents
        • Hoffman Specialty Radiator Steam Vents
        • Hoffman Specialty Steam Vents
        • Hoffman Specialty Vacuum Breakers
        • Hoffman Specialty Water Vent Valves
        • Hoffman Specialty Water Vents Model 77, 78, 79
    • Wastewater Pumps & Packages
      • Effluent Wastewater Pumps
        • 1EC Submersible Effluent Pump
        • 1EP04 & 1EP05 Series Submersible Effluent Pump
        • 1ES Submersible Effluent Pump
        • 2DES – Submersible Effluent Pump
        • 2EC Submersible Effluent Pump
        • Elevator Sump Kit
        • MSDS-Sink Drain System
        • MWP Series Package System with 18 x 30 basin
        • MWP Series Package System with 23 x 30 basin
        • SC05/SC07 Submersible Sump/Effluent Pump
      • Grinder Wastewater Pumps
        • 12GDS – Submersible Grinder Pump
        • 12GS – Submersible Grinder Pump
        • 15GDS/20GDS – Submersible Grinder Pump
        • 15GXS/20GXS – Explosion Proof Submersible Grinder Pump
        • Packaged Grinder System
      • Sewage Wastewater Pumps
        • 1WS/2WS – Submersible Sewage Pump
        • 1WV/2WV – Submersible Sewage Pump
        • 2DWC – Submersible Non-Clog Sewage Pump
        • 2DWS – Submersible Non-Clog Sewage Pump
        • 2VW Submersible Vortex Sewage Pump
        • 2WC Submersible Sewage Pump
        • 2WF – 2″ Sewage Pumps
        • 2WF H – Submersible Sewage Pump
        • 2WP – Submersible Sewage Pump
        • 2WT – Submersible Sewage Pump
        • 3DWS – Submersible Sewage Pump
        • 3WDA – Submersible Sewage Pump
        • 3XWS Explosion Proof Submersible Sewage Pump
        • 4DWC – Submersible Non-Clog Sewage Pump
        • 4DWS – Submersible Sewage Pump
        • 4WDA – Submersible Sewage Pump
        • 4XWC – Explosion Proof Submersible Sewage Pump
        • 4XWS – Explosion Proof Submersible Sewage Pump
        • Impact 2MK – Submersible Self Cleaning Sewage Pump
        • Impact 2MV – Submersible Vortex Sewage Pump
        • Impact 3MK – Submersible Self Cleaning Sewage Pump
        • Impact 3MV – Submersible Vortex Sewage Pump
        • Impact 4MK – Submersible Self Cleaning Sewage Pump
        • Impact 4MV – Submersible Vortex Sewage Pump
        • Impact 6MK – Submersible Self Cleaning Sewage Pump
      • Specialty Wastewater Pumps
        • 1DS Submersible Dewatering Pump
        • 1FE – Multi-Stage, Bottom-Inlet, High Head Submersibles
        • 1SF/1SH Submersible Water Pump
        • 2DS – Submersible Dewatering Pump
        • MIGHTY LITE Water and Trash Handling Models
      • Sump Wastewater Pumps
        • 1CVP Vertical Sump Pumps (obsolete)
        • BBSP – Battery Backup Sump Pump
        • High Temp Sump Pump
        • SC Submersible Sump/Effluent Pump
        • SCS21/SCS31 Submersible Sump Pumps
        • SP (obsolete)
        • SS
    • All Products
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Pressure Independent Control Valves

 

Ultraset is a manual valve for balancing heating and cooling systems. Once set, no adjustments are required even if the pressure varies or the system is changed.

OptiFlo combines an externally adjustable automatic balancing valve and a full modulating control valve with full authority regardless of any fluctuations in the differential pressure of the system.

  • Ultra Setter™ Pressure Independent Control Valve
    ultrasetter-300x205
    View detailed information »

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Product Types

  • Air-Sediment Control & Expansion
  • Boiler Feed & Condensate Pumping Packages
  • Heat Exchangers
  • HVAC/Plumbing Systems – Flow Control
  • Hydronic Heating/Plumbing Accessories
  • Package Pumping Systems
  • Pumps & Circulators
  • Steam Specialties
  • Wastewater Pumps & Packages

Recent News

  • Xylem’s Bell & Gossett ecocirc Wireless Circulator System Provides Instant Hot Water to any Faucet
  • Xylem Expands Its Line of Bell & Gossett BPX Brazed Plate Heat Exchangers
  • Xylem Previews Integrated VFD with Sensorless Control on its Bell & Gossett Series 80 & 80-SC Pumps
  • Xylem’s Bell & Gossett System Syzer Mobile App Now Available for Android
  • Xylem Facility Now ISO 9001:2008-Certified

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