About Pressure Gauges
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Refrigeration Pressure and Vacuum Gauges
Often used with chillers and in refrigeration systems, these gauges display the temperature of ammonia relative to the pressure measurement. Also known as compound gauges, these measure both pressure and vacuum.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Ammonia, and Refrigerant
- Accuracy: ±1.6% Full Scale (Grade B)
Available Pressure and Vacuum Ranges | ||||||
|---|---|---|---|---|---|---|
Graduation Marks | Numeric Increments | |||||
| Pressure Range, psi | Vacuum Range, in. of Hg | psi | in. of Hg | psi | in. of Hg | Display Temp. Range, °F |
| 0 to 150 | 30 to 0 | 5 | 5 | 20 | 30 | -60° to 84° |
| 0 to 300 | 30 to 0 | 5 | 5 | 25 | 30 | -60° to 125° |
Air Conditioner Charging and Testing Manifolds
Monitor refrigerant pressure with analog gauges when servicing air conditioning systems. All manifolds have double O-ring piston valves. Manifolds with sight glass allow you to view liquid levels.
Replacement gauges are sold separately.
Optional gauge cover sets (sold separately) include one blue and one red gauge cover. They are not for use with the manifolds for R-410A refrigerant.
Hose | ||||||||
|---|---|---|---|---|---|---|---|---|
| For Refrigerant Number | Valve Material | Connection | Lg., ft. | Dia. | Color | Includes | Each | |
Two Valve | ||||||||
| R-134A | Brass | 1/2"-16 Acme × 7/16"-20 UNF × 7/16"-20 UNF | 6 | 2 1/2" | One Blue and One Red | __ | 0000000 | 0000000 |
| R-134A, R-404A, R-407C | Aluminum | 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) | 5 | 3 1/8" | One Blue and One Red | Sight Glass | 0000000 | 000000 |
| R-22, R-404A, R-410A | Aluminum | 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) | 5 | 3 1/8" | One Blue and One Red | Sight Glass | 0000000 | 000000 |
| R-410A | Brass | 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) | 5 | 2 1/2" | One Blue and One Red | __ | 0000000 | 000000 |
Four Valve | ||||||||
| R-134A, R-404A, R-407C | Aluminum | 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) × 3/8 UN/UNF (SAE 45°) | 5 | 3 1/8" | One Blue and One Red | Sight Glass | 0000000 | 000000 |
| R-22, R-404A, R-410A | Aluminum | 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) × 1/4 UN/UNF (SAE 45°) × 3/8 UN/UNF (SAE 45°) | 5 | 3 1/8" | One Blue and One Red | Sight Glass | 0000000 | 000000 |
| For Manifold Type | Includes | Set | |
| Two Valve, Four Valve | One Blue Cover, One Red Cover | 0000000 | 000000 |
Digital Air Conditioner Charging and Testing Manifolds
Monitor refrigerant pressure on an LCD when servicing air conditioning systems. This manifold automatically calculates how much refrigerant is needed in a system based on measurements taken with its thermocouples.
Display | |||||||
|---|---|---|---|---|---|---|---|
| For Refrigerant Number | Valve Material | Pipe Connection | Type | Size | Batteries Included | Each | |
Three Valve | |||||||
| R-134A, R-22, R-404A, R-410A | Brass | 1/4 NPT × 1/4 NPT × 1/4 NPT | Digital | 5" | Yes | 0000000 | 0000000 |