Best Hvac System Expansion Valves

iPower 4 inch Backdraft Shutter Damper Back Draft Blocker, One-Way Airflow Ducting Insert Backflow Preventer with 2 Inline Springs Loaded Folding Blades, 4", HVAC Extractor Fan Vent, Range Hoods

...ition of the spring should be horizontal for horizontal installations so that it can open and close optimally.
One-way airflow ducting insert: Back-flow valve with 2 spring-loaded wings prevents the reverse airflow movement through the ventilation duct when the ventilation system is turned off.
Material: The 4 inch Backdraft damper is made out of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel and can withstand temperatures from 14 to 140 °F.
Wide applications: Back draught valves can be inserted into ventilation ducts which are flexible or non-flexible. Designed for use with range hoods, bathroom fans, kitchen and other home HVAC applications. Essential for HVAC ventilation.

Versatile 11-in-1 Screwdriver / Nut Driver for the HVAC professional.
Includes unique style bit for installation/removal of common TR-4 Schrader valves and aggressive thread extractor tip for backing out broken cores.
Great for HVAC and other industrial applications.
Blast finish bit tips provide a firm hold and reduce cam out.
Contains: 3/16-Inch (5 mm) and 1/4-Inch (6 mm) slotted, #1 and #2 Phillips, 1/4-Inch (6 mm), 5/16-Inch (8 mm) and 3/8-Inch (10 mm) nut driver, #1 and #2 square, core removal/installation, core extractor.
Cushion-Grip handle for greater torque and comfort.

Advanced gas control system on handle makes it easy to precision flame , dual flashback arrestors..
For soldering, brazing and jewellery work. Applicating in HVAC and plumbing..
360° rotation of torch tube is capable for various using environment. Temperature can reach 6432℉..
Super oxy blow torch with MAPP & OXYGEN. Lightweight & Portable. Suited for 14.1OZ MAPP and 1.4 oz Oxygen Fuel Cylinders..
Caution: Must close the valves on the cylinders when not in use! If you encounter the problem that the welding torch can not ignite, after the welding torch is installed, please adjust the flame valve and ignite when you hear the sound of outgassing. It will be your best partner at work. Please just feel free to contact us at any time..

Back draft damper is made for insertion into inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring....
Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC....
INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal....
The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from....
Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are....

REPAIRS HVAC CONDENSER AND EVAPORATOR FINS: Specially designed for straightening HVAC condenser and evaporator fins. Bent fins restrict proper and necessary air flow for an HVAC system.
IMPROVES AC SYSTEM EFFICIENCY: Ideal tool for removing debris that will accumulate over time in outdoor HVAC condenser fins.
6 INTERCHANGABLE HEADS: The included comb heads are easily changed to use on all fin widths.
COMPACT DESIGN: straightener tool easily fits in a toolbox or storage compartment for quick & accessible use.
USE WITH OTHER CLEANING PRODUCTS FROM DIVERSITECH: Coil cleaner and deodorisers also available.

...uges window, which makes the operation more convenient. 7.5CM×4CM display screen, support LCD backlight, convenient lighting operation, the displayed data is clearer and easier to read..
7.【Note】The digital HVAC gauges will read random numbers when it is powered on. Correct steps: 1. Turn on, then close the two valves, press the “ZERO” key to clear the reading. 2. Then connect the three-color hoses, then open the valve, and use it normally. Please make sure that the refrigerant hose is properly connected. Poor connection may cause refrigerant leakage. The maximum working pressure of the standard hose is 600 PSI ( 4.13 Mpa, 41.3 bar). The ultimate pressure is 3000 PSI..
8.【How to Detect Whether the Temperature is Accurate】There is a simple method: take out the black wire of the temperature clamp, and then put the temperature clamp into boiling water. If the displayed temperature is 100 ℃ ± 3%, it is normal..

【Higher Performance】:802360JA Zone Valve motor Adapt to Honeywell zone valve motor V8043/V8044 . This Zone Valve Motor 24V, 4rpm at 50/60HZ. Cable....
【Save time and money】:This Replacement motor for v8043 zone valves motor Easy to install. No need to replace brand new actuators or other HVAC....
【High Quality】:Quality tested for over 100K cycles for flawless operation,Metal gears can be perfectly compatible with Honeywell V8043 or V8044....
【More Applicable Scenarios】:802360JA can be replaced: HVAC damper control motor, Actuator Zone Valve motor etc. After many professional debugging,....
【After-sale service】:100% after-sale guarantee, if you have any dissatisfaction with the product, you can ask for a replacement or a full refund.....

EFFICIENT AND SAFE UV-C REPLACeMENT BULB: AIRx Filters replacement UVC bulb for Lennox Y0391 maximize the efficiency of your home air filtration system by treating the air that passes through your HVAC unit with ultraviolet light reducing or eliminating bacteria, viruses, mold spores, yeast and protozoa without producing ozone or secondary air contaminants.
ECONOMICAL AND COST EFFECTIVE UVC BULB REPLACEMENT: Using a UVC germicidal light such as AIRx Filters for Lennox Y0391 keeps your HVAC internal air filtration components such as coil clean all the time enabling your HVAC equipment to perform as intended giving your home air filtration system longer life, lower energy and maintenance cost helping you save in the long run. AIRx Filters UVC bulb is also compatible to replace Lennox UVC 41W-D UVC41W-S.
HVAC EQUIPMENT COMPANION UVC LIGHT BULB: Killing germs, molds and fungi that may live inside your homes’ ductwork, a UVC germicidal light such as AIRx Filters replacement UVC bulb for Lennox Y0391 will help keep your heating and cooling equipment system clean and run at its potential peak efficiency.
UVC LIGHT BULB IMPROVE AIR QUALITY: AIRx Filters replacement UVC bulb for Lennox Y0391 will help increase the value of our air conditioning and air ....

2 Telephone line expansion board for the X16 phone system.
This expansion board adds 2 additional Telephone lines to the system.
2 Telephone line expansion board for the X16 phone system. This expansion board adds 2 additional Telephone lines to the system.
This expansion board will bring the system to its maximum capacity of 6 telephone lines..