A/C refrigerant service
The manifold gauge set is rarely the problem in air-conditioning work — the adapters that connect it are. This is how our coupler sets are put together and what they fit.
Ports and threads decide everything
Service ports change by model year and by market: R134a quick-connect ports, R1234yf ports, and the older screw-on service valves on industrial equipment. A shop that meets a mixed fleet needs the adapters in the van, not on order.
Our coupler sets pair a quick-connect coupler with the adapter stack that lets it seat and seal on the port in front of you — which is why technicians keep them in the pocket and not in the drawer.
What the set covers
Chosen for the vehicles and equipment technicians actually service.
Quick-connect couplers
High- and low-side couplers that seal on the port without forcing the valve open.
Adapter stack
Straight and angled adapters so the gauge hose reaches ports in the tight corners of an engine bay.
Seals that hold
Replaceable seals — the part that fails first in daily service — and spare seals stay available.
Own-brand ready
Your logo on the tool and the case, from 500 pieces per model.
Discover & download
Port data, kit contents and the manual for the coupler set you are considering.
Fitment guide
Which adapter fits which port family — request the sheet for your market.
Request the guideMixed fleet in the shop?
Tell us the vehicle types you service and we will recommend the coupler and adapter combination that covers them.
Wholesale & OEM
Not sure where to start?
Send your model list, quantity and destination country — we reply with pricing, MOQ and lead time within one business day.
- Factory-direct pricing — no middlemen
- Own-brand packaging and manuals from 500 pcs
- Air for samples, sea freight for bulk · FOB China or door-to-door