Manual Couplers For Automobiles Manufacturer,Supplier and Exporter in India
Product Code : EL-RACLE-12757
Jlab Export is a leading Manual Couplers For Automobiles Manufacturer,and suppliers in India
Car air conditioners on R-134a have quick-connect service ports instead of flare ports. This pair of manual couplers snaps onto them. The high-side coupler fits the 16 mm port and the low-side coupler the 13 mm port. Each has a 1/4 in male flare outlet for a charging hose.
Specifications
| High-side coupler | Manual, R-134a, 1/4 in flare male x 16 mm |
| Low-side coupler | Manual, R-134a, 1/4 in flare male x 13 mm |
| 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 |
Practicals on Car AC Systems
In an automobile workshop or ITI lab, students fit the couplers to an R-134a vehicle or car AC trainer with the engine off. They join them to the Manifold Gauges For Mobile Air Conditioning R-134a, open each coupler by turning its knob in, and read the static pressure. Then they start the engine and compare the running pressures on the two sides.
For charging practice, the yellow hose goes to a cylinder of R-134a Refrigerant, and vapour is fed in on the low side with the engine running. Dye goes in through the low-side coupler too, from a Refillable Universal Oil/Dye Injector joined to the hose.
Frequently Asked Questions
Why are the two couplers different sizes?
The R-134a high-side port is larger, at 16 mm, than the 13 mm low-side port. A low-side coupler cannot be pushed onto the high-pressure port, so the gauges cannot be connected the wrong way round.
How do I connect and remove a manual coupler?
Turn the knob fully out first. Pull back the sleeve, push the coupler onto the port until it locks, then turn the knob in to open the port valve. Before removing it, turn the knob out again, then pull the sleeve back.
Will these couplers fit an R-1234yf car?
No. R-1234yf systems have ports of a different size, so the two refrigerants are not mixed. For those cars use the R-1234yf Manual Couplers For Automobiles, which have extended disconnect sleeves.
What fits on the 1/4 in flare outlet?
Any charging hose with a 1/4 in female flare end will fit, such as the hoses of the R-134a manifold or the plain-ended Refrigerant Hose set.
Other Car AC Service Tools
- Infrared Refrigerant Leak Detector
- Rechargeable High Intensity LED UV Flashlight
- Wireless Refrigerant Charging Scale
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Last updated: 5 November 2026