Yellow Jacket 18975 1/4" Core/Vacuum Charge Tool HVACView This Product at Amazon
This versatile tool for the low or high side of a system does four jobs: Vacuum valve. Extra 1/4" side port to attach electronic micron vacuum gauge right at system for greater accuracy. Core removal access. Lets you evacuate and charge through an unrestricted line for increased speed and higher vacuum. Core replacement. Recovery valve. Core removal allows recovery unit to work at maximum efficiency, speeding the recovery process.
Yellow Jacket 69096 Refrigerant Pressure & Temp ChartView This Product at Amazon
Good tool for quick reference of pressure and temperature relationship of large range of different refrigerants. Yellow Jacket 69096 Refrigerant Pressure & Temp Chart
Fieldpiece LT17A Digital Multimeter HVAC TOOLS NEWView This Product at Amazon
I've owned two Lt17a models (1 stolen from me and the other dropped into a well). They're great tools for the HVAC/R tech at a great price. I have just purchased another as a back up to my fieldpiece HS36 stick meter.
TK8100 HVAC Technician Master Tool KitView This Product at Amazon
No Such element
Yellow Jacket 42004 Series 41 3 1/8" Gauges HVAC NEWView This Product at Amazon
This field-proven manifold line has been expanded to include larger, easier to read color-coded gauges in rugged steel cases with polycarbonate crystals. Most importantly, these gauges feature 1% accuracy for an exact reading in critical charge systems.Wide choice of refrigerant combinations including: R-22, R-134a, R-404A R-12, R-22, R-134a R-22, R-404A, R-410A Color-coded scales with bold, easy to read dials Dials with 1% accuracy (Class 1) for critical charge systems Proven sliding double O ring pistons reduce wear Long life nylon seats Forged brass body for durability Full porting maximizes capacity and flow Some models include color-coded, 60" PLUS II hoses with standard 1/4" flare fittings Hose assemblies UL recognized for 4000 psi (275 bar) burst and 800 psi (55 bar) working pressure. File# SA9737
Temperature Pipe Clamp K-Type Thermocouple NEW HVACView This Product at Amazon
Pipe Clamp Temperature Lead is an ideal solution for measuring pipe temperature with any test instrument that accepts K-Type temperature leads.Includes one year replacement warranty
Clamp Jaw Opening: 1-3/8" (3.5 cm)
Temperature: -40ºF to 392ºF (-40ºC to 200ºC)
Leads: 36"
Malco STKM HVAC Starter Kit with Tool BoxView This Product at Amazon
Malco STKM HVAC Start Kit
HVAC Basic Tool Set,105 PC Westward JTS-0105HVACView This Product at Amazon
HVAC Basic Tool Set, SAE, Number of Pieces 105, Drive Size 3/8 In., Number of Sockets/Accs. 28, Number of Wrenches 26, Number of Pliers 8, Number of Screwdrivers 12, Number of Striking Tools 7, Number of Miscellaneous Tools 24 Usually ships : 4
View This Product at Amazon
No Such element
Infrared IR Thermometer w. Laser Guide - Great Tool for HVAC AR300View This Product at Amazon
IR Thermometer Nicety® AR300 Measures -25 to 572 °F This is a brand new, high quality Digital IR Thermometer for non-contact temperature measurements. It can be used for accurate measurements of hot surfaces from a safe distance. The distance to spot size ratio is 12:1, that means the AR300 measures a 1 inch diameter spot from 12 inch distance (or 2 inch diameter from 24 inch distance). It has a built in laser pointer, a multifunctional display with backlight. It can be used in HVAC trade to check air conditioners, heaters or furnaces. In the automotive trade it can be used to check for overheating engine parts or bocked cooling system.
Basic Central Air Conditioning Cycle
During the air conditioning cooling process, refrigerant will flow through a
piping circuit that is divided into 2 main parts: the high pressure side, and the low pressure
side.
The high pressure (and high temperature) side is from the compressor outlet to
the metering device, and the low pressure (and low temperature) side is from the metering
device back to the compressor inlet.
The refrigerant leaves the compressor outlet as a vapor, and travels through a
condenser. Air or water that is much cooler than the refrigerant vapor will be flowing over
the condenser piping, and at this stage of the air conditioning cooling process, the
refrigerant will condense from a vapor to a liquid, still at a high pressure, and as it
condenses, the refrigerant will release heat to the air or water flowing over the condenser.
That's why the air blowing out of the outside unit of your air conditioner is
hot. At this stage of the air conditioning cooling process, the refrigerant, now a
liquid, flows through the liquid line to the metering device.
This is the end of the high pressure part of the circuit, and the low pressure
side starts immediately after the metering device. To visualize the refrigerant
after the metering device, picture water spraying out of a garden hose nozzle.
The full water pressure is in the hose up to the nozzle, and sprays through the
nozzle because atmospheric pressure is much lower than the water pressure in the hose.
The pressure in the low side of the refrigerant circuit is similarly much lower
than the high side pressure, and the image of refrigerant spraying and foaming through the
metering device into the low side is fairly accurate.
As the refrigerant passes into the low pressure side of the system, it begins
evaporating. Its temperature drops as its pressure drops and it becomes cold; normally around
40 F.
The refrigerant now flows through the evaporator, where it will evaporate almost
entirely to a cool vapor. At this point in the air conditioning cooling process, relatively warm air or
water flowing over the evaporator piping will cool because the heat energy it contains will
flow into the relatively colder evaporating refrigerant.
That's why the air blowing out of the air conditioner in your house is cool. The refrigerant will now
carry the heat back to the compressor, absorb a little more heat when it is compressed
into a high pressure, then travel to the condenser where it will release the
heat it has picked up.
At this point, the air conditioning cooling process
will repeat itself until the space being air conditioned is cool enough to satisfy the
thermostat.
