xylem Float Low Water Cut-Off 120 - 240 VAC 20 psi Automatic

125 VA pilot duty rating
• 4-1/8" length insertion
• Packless bellows
• Dual precision switches for dependable operation of the low water cut-off and an alarm or electric water feeder
• For mounting in 2-1/2" NPT boiler side tappings
• Adjustable Bx outlet for easy installation
  

Mcdonnell & Miller 369 Low Water Cut-Off, 120/240 VAC, 20 psi, Automatic Reset

Adjustable Bx outlet for easy installation
• Dual precision switches for dependable operation of cut-off, alarm or electric water feeder
• Packless bellows
• Millivolt circuits

Sid Harvey Item #:B106-4: Replaces Part #:'s : L38-768

Taco flo-checks have dependably stopped gravity circulation in forced hot water heating systems for over 40 years. Flo-checks open automatically when the circulator starts running. They feature a thumb screw to manually open the valve and are available in a cast iron universal body and a bronze sweat in-line configuration.

Flo-checks allow heat to flow only into the zones that are calling for heat
• Thumb screw can be manually opened for gravity feed applications if the main circulator stops operating
• Taco flo-checks open automatically when the circulator starts running
  
  

  Taco B146-19

Hydrolevel Safgard 450 Low Water Cut-Off, 120 VAC, 15 psi, Automatic Reset

Burner circuit contacts open after 15 sec delay in a low water condition
• Delay prevents short cycling caused by momentary fluctuations in the boiler water level
• Automatically reactivates burner circuit 30 sec after water reaches the probe, allowing optional water feeder to raise water level above the probe
• SPDT switch contact
  

2-M Manual Reset Low Water Cutoff Switch 120/240 volt

Bosch BVA-24WN1-M18 Air Handler

2 Ton 18 SEER Multi-Position Factory Installed TXV
• Multi-speed ECM blower motor.
• Factory-installed TXV metering.
• Multi-position Installation - upflow or horizontal right standard;
• field convertible to horizontal left or downflow.
• Multiple electrical entry locations.
• Field-installed electric heater kits 5, 7.5, 10, 15, 20KW available as an accessory.
• Dual front panel design for ease of maintenance.
• Blower and coil easy slide out for ease of maintenance.
• Fully-insulated cabinet design.
• Horizontal and vertical condensate drain pans standard.
• Condensate drain pan is polymer with UVC inhibitor.
• Primary and secondary condensate drain fittings.
• Factory-sealed cabinet certified to achieve 2% or less air leakage rate at 1.0" water column.
• Integrated filter rack with tool-less door access.
• AHRI and ETL Listed.,
  

Watts Regulator series 374A boiler pressure relief valves are used in hot water boiler applications to protect against excessive pressure on all types of hot water heating boiler equipment. It consists of an iron body construction with forged bronze inlet connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 374A resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.

Iron body with forged brass inlet
• Seat located above drain, water cant be trapped and sediment cant foul seat
• Non-mechanical seat-to-disc alignment will not stick or freeze
• Each hot water space heating boiler shall be equipped with a pressure relief valve set to relieve below the maximum boiler working pressure
• Non-metallic disc-to-metal seating
• Bronze inlet wetted parts
  
  

  Watts Water B145-9A

Amtrol Parts 443 Cast Iron In-Line Air Purger, 1", 125 psig 4" W x 6" H

Separates air from water in closed loop hydronic heating system
• System connection sets the point of no pressure change
• 1-year warranty
• 1/8" NPT top tapping, 1/2" bottom tapping

Amtrol Parts B135-80

Amtrol Parts 444 Cast Iron Air Purger, 1-1/4", 125 psi, 4" W x 6" H

Separates air from water in closed loop hydronic heating system
• System connection sets the point of no pressure change
• 1-year warranty
• 1/8" NPT top tapping, 1/2" bottom tapping

Amtrol Parts B135-81

Mcdonnell & Miller PSE-801-M-120 Low Water Cut-Off, 120 VAC, 15 psi Steam, 160 psi Water, Manual Reset

Lockout delay
• Power interruption
• Self cleaning probe
• No lock out with loss of power if probe is in water
• Green LED indicates power on
• Red LED indicating low water condition
• 7000 ohm probe sensitivity
  

Amtrol Parts Diaphragm Expansion Tank W/Fill Valve 2 Gallon 1/2" FNPT 100 psig

Amtrol Parts Diaphragm Expansion Tank 4.4 Gallon 1/2" NPTM 100 psig 30 Lbs