• Protects the boiler from a low water situation.
• Direct Probe to Control Connection. If the control fails there is no need to drain the system to replace the control (like competitors models)
• Adjustable Probe Sensitivity
• UL & CUL Listed
Cart0 Items
-
Browse
Products- CHEMICALS
CHEMICALS
- AEROSOLS
- BELT DRESSING
- CAL-BLAST CONDENSER COIL CLEANER
- COLD GALVANIZING SPRAY
- DEGREASING SOLVENT EF (AEROSOL)
- ELECTRICAL CONTACT CLEANER
- EVAP FOAM NO RINSE HEAVY DUTY DETERGENT
- EVAP FRESH NO RINSE HEAVY DUTY DETERGENT
- EXPANDING FOAM
- FOOD GRADE SILICONE
- PAN SPRAY
- PENETRATING OIL
- PUMP PROTECTOR
- VIPER DEGREASER COIL CLEANER
- WASP & HORNET KILLER - NU-KILL
- CLEANERS
- CONDENSATE PAN TABLETS
- DEODERIZERS
- FUEL OIL
- LEAK DETECTORS
- LUBRICANTS
- REFRIGERANTS
- SEALANTS
- WATER FILTRATION
- WATER TREATMENT
- AEROSOLS
- COMPRESSORS
- CONTROLS
CONTROLS
- AIR PRESSURE CONTROLS
- DEFROST CONTROLS
- FAN & LIMIT CONTROLS
- GAS CONTROLS & ACCESSORIES
- GAS VALVES
- HEAT PUMP CONTROLS
- PRESSURE CONTROLS
- TEMPERATURE CONTROLS
- A11 SERIES LOW TEMPERATURE CUTOUT - FREEZE STAT
- A19 SERIES COILED BULB THERMOSTATS
- A19 SERIES REMOTE BULB CONTROLS
- A419 ELECTRONIC TEMPERATURE CONTROL
- CONSTANT CUT-IN CONTROLS
- CONSTANT DIFFERENTIAL CONTROLS
- COOLING TOWER OR EVAP. CONDENSER CONTROL
- ELECTRONIC TEMPERATURE CONTROL
- EVAPORATOR DE-ICE CONTROL
- HEAT PUMP DE-ICE CONTROL
- ICE MACHINE CONTROLS
- O10 TEMPERATURE CONTROLS
- ROOM AIR CONDITIONER THERMOSTATS
- THERMOSTATS
- ELECTRICAL & ACCESSORIES
ELECTRICAL & ACCESSORIES
- BOXES AND COVERS
- CAPACITORS
- COMPRESSOR TERMINAL REPAIR KIT
- CONTACTORS
- CRANKCASE HEATERS
- DISCONNECT SWITCHES
- DUCT HEATER COIL KIT
- ELECTRICAL FITTINGS
- ELECTRICAL TAPE
- EVAPORATIVE DRAIN PANS
- FAN CENTERS
- FUSES
- HARD START KITS
- HEATING CABLE
- RELAY & OVERLOADS
- SEQUENCERS
- SOLDERLESS TERMINALS
- TRANSFORMERS
- VOLTAGE MONITORS
- WIRE
- WIRING DEVICES
- HVAC EQUIPMENT
HVAC EQUIPMENT
- BOILERS
- DUCT HEATER - ELECTRIC
- FAN COIL - CEILING MOUNT
- FUJITSU DUCTLESS
- GEOTHERMAL HEAT PUMPS
- GIBSON
- INFRARED RADIANT HEATERS
- MAMMOTH COMMERCIAL EQUIPMENT
- MARS AIR DOOR
- MOBILE HOME FURNACES
- OIL FURNACES
- PACKAGE TERMINAL UNITS
- PORTABLE AIR CONDITIONERS
- SPACEPAK HIGH VELOCITY SYSTEM
- THRU-THE-WALL A/C
- THRU-THE-WALL GAS & ELECTRIC PACKS
- UNIT HEATERS
- WALL MOUNT PACKAGE UNITS
- WATER HEATERS
- HVAC INSTALLATION ACCESSORIES
HVAC INSTALLATION ACCESSORIES
- CONDENSATE PRODUCTS
- CONDENSATE PUMP - HEAVY DUTY
- CONDENSATE PUMP - LOW PROFILE
- CONDENSATE PUMP - MICRO
- CONDENSATE PUMP - PREMIUM NXTGEN
- CONDENSATE PUMP - STANDARD
- DRAIN HOSE - NO KINK
- DRAIN PANS - HIGH RISE
- DRAIN PANS - STANDARD
- SAFETY SWITCH - CC1
- SAFETY SWITCH - EZTRAP
- SAFETY SWITCH - MINI-SPLIT
- SAFETY SWITCH - SS2
- SAFETY SWITCH - WS1
- VINYL TUBING - CLEAR
- CONDENSER ACCESSORIES
- DUCT INSULATION
- DUCT SEALANT MASTIC
- DUCT SMOKE DETECTORS
- FLEXIBLE DUCT
- FURNACE FEET & LEVELING BLOCKS
- REGISTERS & GRILLES
- CEILING DIFFUSERS
- GRILLES - BAR-FACED FLOOR
- GRILLES - FILTER
- GRILLES - RETURN
- REGISTER - 4 WAY
- REGISTER - CEILING/SIDEWALL
- REGISTER - CEILING/SIDEWALL ADJUSTABLE
- REGISTER - FLOOR
- RETURN/EXHAUST GRILLES
- T-BAR FILTER GRILL W/FIBERGLASS PLENUM
- T-BAR LAY-IN DIFFUSER
- T-BAR RETURN - PERFORATED W/FIBERGLASS PLENUM
- SHEET METAL PRODUCTS
- AIR-TITE SADDLE TAKEOFF
- AIR-TITE TAKEOFF
- AIR-TITE TAKEOFF W/DAMPER
- AIR-TITE TOP TAKEOFF
- COLD AIR BOOT
- COLD AIR DROP KIT
- COLD AIR FRAMING
- DAMPERS
- DIFFUSER BOX - BLIND
- DIFFUSER BOX - SIDE OUTLET
- DIFFUSER BOX - TOP OUTLET
- DRIVE CLEATS
- DUCT ELBOW - HORIZONTAL 45
- DUCT ELBOW - HORIZONTAL 90
- DUCT ELBOW - VERTICAL 45
- DUCT ELBOW - VERTICAL 90
- ELBOW - ADJUSTABLE 90
- FILTER CHANNEL
- FILTER RACKS
- FLAT SHEETS
- FLEXIBLE DUCT CONNECTOR
- FURNACE BOX
- OVAL - 90 REGISTER BOOT
- OVAL - END BOOT
- OVAL - FLAT 45
- OVAL - FLAT 90
- OVAL - PIPE
- OVAL - ROUND TO OVAL BOOT 90
- OVAL - ROUND TO OVAL BOOT STRAIGHT
- OVAL - STACKHEADS
- OVAL - STACKHEADS W/ COLLAR
- OVAL - STRAIGHT REGISTER BOOT
- OVAL - VERTICAL 45
- OVAL - VERTICAL 90
- PANNING - METAL
- PANNING - THERMO-PAN
- PIPE - CAP
- PIPE - REDUCERS
- PIPE - ROUND
- PLENUMS
- REGISTER BOOT - 90
- REGISTER BOOT - END CENTER
- REGISTER BOOT - STRAIGHT
- REGISTER COLLAR
- RETURN AIR SUPPORT BOXES
- S CLEATS
- S CLEATS RIGID (STANDING)
- STARTING COLLAR - FLEX DUCT (LONG)
- STARTING COLLAR - FLEX DUCT (LONG) W/DAMPER
- STARTING COLLAR - SHORT
- STARTING COLLAR - TAB (DUCT BOARD)
- TEES - 26 GAUGE
- TEES - FLUE TAPPERED WYE
- TOP TAKEOFF
- TRUNK DUCT
- TRUNK DUCT - END CAPS
- TRUNK DUCT - REDUCERS
- TRUNK DUCT - STARTING COLLAR
- TRUNK DUCT HANGERS
- VENT HOOD - ALUMINUM
- WYE BRANCHES
- TAPES
- UTILITY PUMP
- WIRE
- ZONING SYSTEMS
- DAMPERS - AUTOMATIC ROUND - HW
- DAMPERS - AUTOMATIC ROUND - ZONEFIRST
- DAMPERS - MODULATING ROUND
- DAMPERS - PARALLEL BLADE - ZONEFIRST
- DAMPERS - PARALLEL BLADE- HW
- DAMPERS - RETROFIT ROUND
- DAMPERS - STATIC PRESSURE
- REPLACEMENT MOTOR
- TotalZone® ADD-A-ZONE PANEL
- TRUEZONE ZONING PANEL
- ZONEFIRST ZONING PANEL
- ZONING ACCESSORIES
- CONDENSATE PRODUCTS
- HYDRONIC SYSTEM, CONTROLS & ACCESSORIES
HYDRONIC SYSTEM, CONTROLS & ACCESSORIES
- AIR SEPERATORS
- AQUASTATS
- BACKFLOW PREVENTERS
- BOILER FEED VALVES
- BOILER TRIM KIT
- BYPASS VALVE
- CIRCULATOR PUMPS
- F61 SERIES FLOW SWITCH
- FLOW CONTROLS
- HYDRAULIC SEPARATOR
- HYDRO AIR FAN CONTROL
- HYDRONIC EXPANSION TANKS
- LOW WATER CUTOFF
- MIXING VALVE
- OUTDOOR RESET CONTROLS
- RADIANT MIXING BLOCK
- REHAU PEX
PRODUCTS
- ACTUATOR
- EVERLOC COPPER ADAPTER
- EVERLOC COUPLINGS
- EVERLOC ELBOW TO COPPER
- EVERLOC ELBOW W/ DROP EAR
- EVERLOC FPT ADAPTER
- EVERLOC MPT/COPPER ADAPTER
- EVERLOC PLUGS
- EVERLOC SLEEVES
- EVERLOC TEES
- EVERLOC TO EVERLOC ELBOWS
- HEAT EXCHANGER
- HEAT TRANSFER PLATE
- INSULATION SCREW CLIPS
- MANIFOLDS
- PLASTIC HOLDING PIN
- PLUMBING
- POLYMER SUPPORT BENDS
- PROTECTION SLEEVE
- PVC BEND GUIDES
- RAILFIX
- RAUPANEL
- RAUPEX MANIFOLD CONNECTIONS
- RAUPEX O2 BARRIER PIPE
- RAUPEX UV SHIELD PIPE
- TALON HOOKS
- TOOLS
- RELIEF VALVES
- STEAM SPECIALTIES
- STRAINER - WYE, CAST IRON
- SWITCHING RELAY
- SWITCHING RELAYS
- TANKLESS WATER HEATER VALVES
- X-PUMP BLOCK
- ZONE VALVES
- INDOOR AIR QUALITY
- MOTORS & ACCESSORIES
MOTORS & ACCESSORIES
- OIL CONTROLS & ACCESSORIES
- REFRIGERATION ACCESSORIES
REFRIGERATION ACCESSORIES
- REFRIGERATION EQUIPMENT
REFRIGERATION EQUIPMENT
- TOOLS
TOOLS
- BRAZING & SOLDERING TOOLS
- ABRASIVE PAD
- ACETYLENE ACCESSORIES
- ACETYLENE REGULATORS
- ACETYLENE TORCH KITS
- ACETYLENE TORCH TIPS
- ACETYLENE, OXYGEN, NITROGEN GASES & TANKS
- BRAZING ALLOYS
- FITTING BRUSHES
- GALLO GUN
- HAND TORCH
- HEAT SHIELDS & GELS
- MAPP AND PROPANE GAS
- MESHCLOTH
- NITROGEN REGULATORS & FLOW METER
- OXY-ACETYLENT BRAZING KIT
- SANDCLOTH
- SLUDGE SUCKER NITROGEN KIT
- TORCH GAUGE
- TORCH HANDLE
- CHARGING
TOOLS
- 1/4" CHARGING HOSES
- 3/8" CHARGING HOSE
- ANTI-BLOWBACK VALVES
- BLACKMAX™ MANIFOLD SET
- CHARGING HOSE BALL VALVES
- CHARGING SCALE
- CHARGING SCALE - WIRELESS
- DIGITAL MANIFOLD - 549
- DIGITAL MANIFOLD - 550
- DIGITAL MANIFOLD 4-VALVE - 557
- GAUGES
- HOSE GASKET AND DEPRESSOR
- R-134A SNAP COUPLERS 1/4" SAE
- RECOVERY CYLINDERS
- RECOVERY UNITS
- REFRIGERANT RECOVERY TOOL
- SMART PROBE AC & REFRIGERATION
- VACUUM TOOLS
- VALVE CORE TOOLS
- VALVE CORES
- VAPOR REFRIGERANT CHARGER
- VORTECH PREMIUM CHROME & BLACK MANIFOLD
- WORKINGMANS MANIFOLD
- FASTENERS
- ANCHOR KITS
- BIT-TIP SCREWS
- COMBO HEAD SCREWS
- COTTER PINS
- FENDER WASHERS
- FLAT WASHERS
- HEX HEAD CAP SCREWS
- HEX NUTS
- HOSE CLAMPS
- MACHINE SCREWS HEX NUTS
- NYLON CABLE CLAMPS
- NYLON TIES
- PIPE HANGING STRAP
- POWER BIT
- POWER BIT EXTENSIONS
- SET SCREWS
- SLOTTED ROUND HEAD MACHINE SCREW
- SPLIT LOCK WASHERS
- STOVE BOLTS
- TOGGLE BOLTS
- ZIP-IN SCREWS
- HAND TOOLS
- ADJUSTABLE WRENCH
- BATTERIES
- BRUSHES
- CAULK GUNS
- ELECTRICAL STRIPPERS
- FIN COMBS
- FLARING & SWAGING TOOLS
- FLASHLIGHTS
- GLOVES, TOWELS & CLEANER
- GREASE GUNS & FITTINGS
- HEX KEYS
- HUB & BLADE PULLER
- MAGNETIC HEX NUT DRIVERS
- MAGNETIC UMBRELLA KIT
- PIN EXTRACTOR TOOL
- PLIERS
- RATCHET SERVICE WRENCHES
- SCREWDRIVERS
- SHEET METAL TOOLS
- TAPE MEASURE
- TIE DOWN STRAPS
- TOOL BAG
- TORQUE WRENCH SET
- TUBE BENDERS
- TUBE CUTTERS
- UTILITY KNIVES
- INSTRUMENTS
- KNEEPADS
- SAFETY GLASSES
- SAWS
- BRAZING & SOLDERING TOOLS
- TUBE, INSULATION & FITTINGS
TUBE, INSULATION & FITTINGS
- ACCESS FITTINGS
- BLACK IRON
- BRASS FITTINGS
- COPPER FITTINGS
- 45° ELBOW - CxC
- 45° ELBOW - FTGxC
- 90° LONG RADIUS ELBOW - CXC
- 90° LONG RADIUS ELBOW - FTGxC
- 90° LONG RADIUS REDUCING ELBOW - CXC
- 90° SHORT RADIUS ELBOW - CxC
- 90° SHORT RADIUS ELBOW - FTGxC
- ADAPTER - FEMALE CxFPT
- ADAPTER - MALE CxMPT
- COUPLING - REDUCING CxC
- COUPLING - ROLLED STOP - CxC
- FITTING REDUCER - FTGxC
- P-TRAP - CxC
- TEE - CxCxC
- TUBE CAP
- TUBE STRAP - 2 HOLE
- UNION - CxC
- COPPER TUBE
- DRAIN HOSE - NO KINK
- GAS COCKS
- GAS CONNECTORS - FLEXIBLE
- LINESET DUCTING SYSTEM
- METAL CHANNEL & ACCESSORIES
- NOVENT LOCKING CAPS
- PVC FITTINGS
- PVC TUBE
- TRACPIPE GAS PIPING SYSTEM
- TUBE & PIPE SEALANTS
- TUBE INSULATION
- VINYL TUBING - CLEAR
- WATER VALVES
- VENTING PRODUCTS
VENTING PRODUCTS
- BAROMETRIC DRAFT CONTROL
- B-VENT
- CHIMNEY LINERS
- COMBUSTION AIR SYSTEMS
- COMMERCIAL VENTILATORS
- AXIAL FANS
- CENTRIFUGAL INLINE FANS
- DOWNBLAST ROOF VENTILATOR - BELT DRIVE
- DOWNBLAST ROOF VENTILATOR- DIRECT DRIVE
- EXHAUST FANS - GUARD MOUNTED
- EXHAUST WALL CABINET FANS
- EXHAUST WALL FANS - STANDARD DUTY
- FILTERED SUPPLY UNIT
- PROPELLER FANS - DIRECT DRIVE MEDIUM DUTY
- ROOF EXHAUST FAN - DIRECT DRIVE
- ROOF/WALL EXHAUST FAN
- SHUTTER FANS - DIRECT DRIVE
- UPBLAST ROOF VENTILATOR - BELT DRIVE
- UPBLAST ROOF VENTILATOR - DIRECT DRIVE
- DRYER BOOSTER FAN
- DUCT FANS
- POWER VENTERS
- VENT DAMPER
- CHEMICALS
-
Quick
Order
