Manual Couplers For Automobiles Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-12758
Jlab Export is a leading Manual Couplers For Automobiles Manufacturer,and suppliers in India
This coupler pair is for cars that run on R-1234yf, the refrigerant in many newer vehicles. The high-side coupler fits the 17 mm port and the low-side coupler the 14 mm port, so neither fits an R-134a system. Both have a 12 mm female connection for the hose and an extended disconnect sleeve that is easier to grip in a crowded engine bay.
Specifications
| High-side coupler | R-1234yf, 12 mm female x 17 mm, extended disconnect sleeve |
| Low-side coupler | R-1234yf, 12 mm female x 14 mm, extended disconnect sleeve |
| Set | One high-side and one low-side coupler |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Practice on R-1234yf Vehicles
In an automobile AC lab, students connect the couplers to the hoses of the Manifold Gauges For Mobile Air Conditioning R-1234yf. They fit them to an R-1234yf car or trainer and read the static pressure with the engine off. Then they read the running pressures and compare them with the service data for the vehicle.
Car systems are charged by weight to the figure on the under-bonnet label. Students stand a cylinder of R-1234yf Refrigerant on the Wireless Refrigerant Charging Scale, zero it, and charge on the low side until the scale shows the set amount. R-1234yf is mildly flammable, so teachers keep flames and sparks away from the work.
Frequently Asked Questions
Can these couplers be used on an R-134a car?
No. The R-1234yf ports are 17 mm and 14 mm, and R-134a cars have their own smaller sizes, so these couplers do not lock on. That keeps the two refrigerants apart. R-134a cars need the R-134a Manual Couplers For Automobiles.
What is the extended disconnect sleeve for?
The sleeve is pulled back to release the coupler from the port. A longer sleeve gives more to hold, which helps when the port sits deep in the engine bay or the hands are gloved.
How do I open the coupler once it is on the port?
After the coupler clicks onto the port, turn the hand knob clockwise to press the port valve open. Turn it back fully before you release the sleeve, or refrigerant escapes as the coupler comes off.
Can one manifold serve both R-134a and R-1234yf cars?
Keep separate gauges, hoses and couplers for each refrigerant. Small amounts of one refrigerant or its oil left in shared hoses can contaminate the other system.
Other Car AC Service Items
- Infrared Refrigerant Leak Detector (senses HFO refrigerants)
- Ultraviolet Refrigerant Leak Detector
- Rechargeable High Intensity LED UV Flashlight
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Last updated: 5 November 2026