Mastercool HVAC Manifolds and Gauges

 
Mastercool 66636-AYF - R1234y, R134a Brass Manifold 2 1/2-Inch Gauge Set (36-Inch Hoses)
  • Refrigerant Type: R-1234YF, R-134A
  • Hose Length: 36 IN
  • Fitting style hose template: Standard
  • Shipping Weight: 6.00 LBS

List Price: $108.70

Your Price: $104.51

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Mastercool 66660 - Automotive R134a 2-Way Manifold Gauge Sets with Economy Couplers
  • Refrigerant Type: R-134A
  • Hose Length: 60 IN
  • Fitting style hose template: Standard
  • Unique Features: 60” hose Packaged in a clamshell
  • Warranty: 1 YEARS
  • Warranty Details: MASTERCOOL Inc.® warrants this product against defects in material and workmanship for a period of one year (exceptions listed below) from date of purchase to original user. This warranty does not cover failure due to abuse, improper usage, neglect or progressive wear and tear. Warranty becomes valid to the original user when this form and proof of purchase is submitted within 30 days of purchase. Warranty service is provided through the factory only. Please contact the service department toll free for parts, service concerns, or to obtain a return authorization number for warranty repair.

List Price: $95.08

Your Price: $91.42

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Mastercool 66661 - Automotive R134a 2-Way Manifold Gauge Set with Economy Couplers
  • Refrigerant Type: R-134A
  • Hose Length: 60 IN
  • Fitting style hose template: Standard
  • Unique Features: 60” hose Packaged in a clamshell
  • Warranty: 1 YEARS
  • Warranty Details: MASTERCOOL Inc.® warrants this product against defects in material and workmanship for a period of one year (exceptions listed below) from date of purchase to original user. This warranty does not cover failure due to abuse, improper usage, neglect or progressive wear and tear. Warranty becomes valid to the original user when this form and proof of purchase is submitted within 30 days of purchase. Warranty service is provided through the factory only. Please contact the service department toll free for parts, service concerns, or to obtain a return authorization number for warranty repair.

List Price: $83.74

Your Price: $80.51

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Mastercool 66773 - R134a 2-Way Manifold 2 1/2-Inch Gauge Set with Economy Couplers and Tank Adapter - 72-Inch Hoses
  • Refrigerant Type: R-134A
  • Hose Length: 72 IN
  • Fitting style hose template: Standard
  • Unique Features: Refrigerants: R410A, R22, R404A 2-3 way aluminum manifold (no hoses) 3 1/8-inch gauges 1/4-inch MFL Exclusive 3/8-inch Ball Valve Design
  • Product Height: 8.00 IN
  • Product Length: 14.00 IN

List Price: $102.27

Your Price: $98.33

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Mastercool 69843-SF HA - R1234yf A/C System Flush Hose Assembly Includes High and Low Side Couplers
  • Hose Diameter: 0.25 IN
  • Hose length template: 8 Ft (96 INWhat's This?)
  • Fitting style hose template: Standard
  • Hose style Template: Yellow
  • Packaging style Hoses Template: Single hose

List Price: $74.10

Your Price: $71.24

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Mastercool 69889-SF HA - R134a A/C System Flush Hose Assembly Includes High and Low Side Couplers
  • Hose Diameter: 0.25 IN
  • Hose length template: 8 Ft (96 INWhat's This?)
  • Fitting style hose template: Standard
  • Hose style Template: Yellow
  • Packaging style Hoses Template: Single hose

List Price: $61.75

Your Price: $59.37

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Mastercool 70200-MSK - Mini-Split Tool Kit
  • Refrigerant Type: R-22, R-404A, R-410A
  • Combustion Analysis: No
  • Diode Testing: No
  • Hose Length: 60 IN
  • Fitting style hose template: Ball Valve
  • Continuity Test: No

List Price: $292.03

Your Price: $280.79

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Mastercool 80103 - R134a Brass Manifold 2 1/2" Gauge Set (w/o Hose)
  • Refrigerant Type: R-134A
  • Hose Length: N/A
  • Unique Features: 1/4 MFL
  • Warranty: 1 YEARS
  • Warranty Details: MASTERCOOL Inc.® warrants this product against defects in material and workmanship for a period of one year (exceptions listed below) from date of purchase to original user. This warranty does not cover failure due to abuse, improper usage, neglect or progressive wear and tear. Warranty becomes valid to the original user when this form and proof of purchase is submitted within 30 days of purchase. Warranty service is provided through the factory only. Please contact the service department toll free for parts, service concerns, or to obtain a return authorization number for warranty repair.
  • Comments: N/A

List Price: $58.99

Your Price: $56.72

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Mastercool 80136 - R134a 2-Way Brass Manifold Gauge Set without Couplers
  • Refrigerant Type: R-134A
  • Hose Length: 36 IN
  • Unique Features: 36" hose length
  • Warranty: 1 YEARS
  • Warranty Details: MASTERCOOL Inc.® warrants this product against defects in material and workmanship for a period of one year (exceptions listed below) from date of purchase to original user. This warranty does not cover failure due to abuse, improper usage, neglect or progressive wear and tear. Warranty becomes valid to the original user when this form and proof of purchase is submitted within 30 days of purchase. Warranty service is provided through the factory only. Please contact the service department toll free for parts, service concerns, or to obtain a return authorization number for warranty repair.
  • Comments: N/A

List Price: $81.39

Your Price: $78.26

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Mastercool 80161 - R134a 2-Way Brass Manifold Gauge Set without Couplers, 2 1/2″ Gauges, 3 - 60″ Hoses
  • Refrigerant Type: R-134A
  • Hose Length: 60 IN
  • Unique Features: 60" Hose length
  • Warranty: 1 YEARS
  • Warranty Details: MASTERCOOL Inc.® warrants this product against defects in material and workmanship for a period of one year (exceptions listed below) from date of purchase to original user. This warranty does not cover failure due to abuse, improper usage, neglect or progressive wear and tear. Warranty becomes valid to the original user when this form and proof of purchase is submitted within 30 days of purchase. Warranty service is provided through the factory only. Please contact the service department toll free for parts, service concerns, or to obtain a return authorization number for warranty repair.
  • Comments: N/A

List Price: $89.82

Your Price: $86.36

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Mastercool 80172 - R134a 2-Way Brass Manifold Gauge Set without Couplers, 3 1/8″ Gauges, 3 - 72″ Hoses
  • Refrigerant Type: R-134A
  • Hose Length: 72 IN
  • Unique Features: 72" probe length
  • Warranty: 1 YEARS
  • Warranty Details: MASTERCOOL Inc.® warrants this product against defects in material and workmanship for a period of one year (exceptions listed below) from date of purchase to original user. This warranty does not cover failure due to abuse, improper usage, neglect or progressive wear and tear. Warranty becomes valid to the original user when this form and proof of purchase is submitted within 30 days of purchase. Warranty service is provided through the factory only. Please contact the service department toll free for parts, service concerns, or to obtain a return authorization number for warranty repair.
  • Comments: N/A

List Price: $92.20

Your Price: $88.65

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Mastercool 80636 - R134a 2-Way Brass Manifold Gauge Set without Couplers, 2 1/2″ Gauges, 3 - 36″ Hoses
  • Refrigerant Type: R-134A
  • Hose Length: 36 IN
  • Unique Features: 36" Probe length
  • Warranty: 1 YEARS
  • Warranty Details: MASTERCOOL Inc.® warrants this product against defects in material and workmanship for a period of one year (exceptions listed below) from date of purchase to original user. This warranty does not cover failure due to abuse, improper usage, neglect or progressive wear and tear. Warranty becomes valid to the original user when this form and proof of purchase is submitted within 30 days of purchase. Warranty service is provided through the factory only. Please contact the service department toll free for parts, service concerns, or to obtain a return authorization number for warranty repair.
  • Comments: N/A

List Price: $76.78

Your Price: $73.82

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HVAC Manifolds and Gauges

A draft gauge is essentially a manometer used to measure draft of low gas heads, such as draft pressure in a furnace, or small differential pressures of less than 1 psi. These instruments are suitable for checking flue pipe, chimney, fire box, smoke hood, smoke pipe draft, draft regulator, oil burner firing rate, and basement ventilation.
 

Manifolds are used to monitor and charge HVAC systems. These units will have multiple ports for different refrigerant types. The majority of these units are simple analog instruments. However, there are many digital manifolds on the market today that enable the user to perform other complex operations such as calculating superheat and subcooling, linear adjustment of the pressure sensors, and micron measurements via a built-in micron gauge.

This video demonstrates the Fieldpiece SMAN4. It is a 4-port, wireless digital manifold with a large 3/8" port for faster evacuations and recovery. This is just one of the digital manifolds available from TEquipment.
 

 

Gauges are simply used to monitor HVAC systems. The vast majority of gauges can be used to measure pressure of any type of refrigerant, however the temperature scales located on the inner rings of the gauge are based on pressure-temperature data for specific refrigerants. If you are looking to get pressure-temperature data from your gauges, make sure they are marked for the refrigerant you use.

HVAC gauges can range from simple analog gauges to digital vacuum gauges with built in high and low pressure alarms and integrated timers to record how long the system has maintained a deep vacuum. Digital gauges have several advantages over analog gauges. Primarily, digital gauges are more accurate. The typical accuracy for digital gauges is 0.5% of full scale, although it can range anywhere from 0.35% full scale to 1% of full scale. It is important to remember however that the accuracy of a digital gauge can vary with temperature. Digital gauges also feature better display resolution than analog options. Most digital gauges have a resolution of 0.1 psi and can display pressures through their entire range in increments of 0.1 psi. The best analog gauges show increments of 5 psi.

This video demonstrates the Fieldpiece SVG3 Digital Micron Vacuum Gauge. This gauge is an affordable digital option that incorporates alarms, a stopwatch, and display resolution of 1 micron.
 
 
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