The service valve is a important element of the split air conditioning,which connect,open or close the refrigerant liquid line,vacuumize and charge refrigerant between the outdoor unit and indoor unit. ModelNominal diameterAdapter ODAdapter ThreadApply model of air conditionerMount DimeansionsWorking pressureMetricInchMetricInchDG4Φ4Φ61/4''(6.35)M12x1.257/6''-20UNF1HP/1.5HP380-3.0MPaDG8Φ8Φ103/8''(9.52)M16x1.55/8''-18UNF1HP/3HP38DG10Φ10Φ121/2''(12.7)M18x1.53/4''-16UNF1.5HP/5HP40DG12Φ12Φ141/2''(12.7)M20x1.53/4''-16UNF2HP40DG13Φ13Φ165/8''(15.88)M22x1.57/8''-14UNF3HP45DG16Φ16Φ193/4''(19.05)M27x2.01 1/16''-14UNF5HP45 We are professional refrigeration parts supplier in China. export different kinds of refrigeration parts and HVAC PARTS in China. Different type of air conditioner stop valve, brass valve, brass stop valve, and "L" type stop valve.