Application: For liquid suction and discharge. Material: Standard Pin lug couplings have aluminum shanks with brass swivel nuts and NPSM thread,NST（Fire hose thread）and ppare available. Thread: NPSM,NST,NPSH.
The coupling is used for air hose with cast iron. Size is from 1/4' to 2', which have several types: Australia type, Euro type and USA type. Our universal air hose coupling is widely used in many countries.
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