Manifold Gauges For Mobile Air Conditioning R-134a Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-12743
Jlab Export is a leading Manifold Gauges For Mobile Air Conditioning R-134a Manufacturer,and suppliers in India
Car and bus air conditioners that use R-134a are serviced through quick couplers that snap onto the vehicle service ports. This manifold set includes an automotive R-134a quick coupler with a 1/4 in outlet, 80 mm gauges scaled for R-134a and a sight glass. Its red, blue and yellow hoses are 120 cm long with 1/4 in ends.
Specifications
| Gauge diameter | 80 mm |
| Refrigerant scale | R-134a |
| Sight glass | Included |
| Hoses | Red, blue and yellow, 1/4 in to 1/4 in |
| Hose length | 120 cm |
| Quick coupler | Automotive R-134a, 1/4 in outlet |
| Packing | Blow-moulded case |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 7–10 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Practice on Car Air Conditioning
With the engine off, students find the low-side port on the larger suction pipe and the high-side port on the smaller line. They fit the couplers, open them and read the static pressure on both gauges. With the engine running and the AC on, they read both sides again and check the low-side figure against the R-134a temperature scale.
Before a recharge, the old refrigerant is taken out with a Refrigerant Recovery Machine and the system is evacuated with one of the Fast Vacuum Pumps. Students then charge R-134a Refrigerant as vapour into the low side with the engine running, and stop at the weight on the under-bonnet label.
Frequently Asked Questions
Will the R-134a coupler fit an R-1234yf car?
No. R-1234yf service ports are a different size from R-134a ports, so these couplers cannot go on them, which keeps the two refrigerants apart. Newer cars on R-1234yf need the Manifold Gauges For Mobile Air Conditioning R-1234yf.
Which port on a car is the low side?
The low-side port sits on the larger suction pipe between the evaporator and the compressor, and its fitting is the smaller of the two. The blue hose goes there. The high-side port is on the smaller pipe after the compressor and takes the red hose.
How do I get the refrigerant in the high-side hose back into the car?
With the engine running and the AC on, close the high-side coupler and take it off the port. Then open both manifold valves while the low-side coupler stays connected. The running compressor draws the refrigerant left in the red hose back through the low side, so less is lost.
Why does the compressor clutch keep cycling on and off?
On many car systems a low-pressure switch disengages the clutch when suction pressure falls to its cut-out point, then engages it again as the pressure rises. Some cycling is normal, more so in cool weather. Very short, rapid cycling often points to a low charge. Watch the blue gauge drop as the clutch engages.
Other Car Air Conditioning Service Items
- Manual Couplers For Automobiles (R-134a high and low side)
- Infrared Refrigerant Leak Detector
- Automotive Air Conditioning Trainer
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Last updated: 5 November 2026
