Thread To Connect Under Pressure Couplings (Brass)/ACOPLES Hidraulicos Tuerca De Mariposa Connexion by screwing together the two parts Disconnection by unscrewing the two parts Shut off by flat valve Male and female connectable under pressure disconnection under pressure allowed interchangeability US market Interchangebility according to ISO 7241-2 Technical Specifications High grade carbonsteel with heat trearted wear parts Polyurethane and NBR Backup ring in PTFE -25C to +125C According to ISO 7241-2 Product Categories 1.ISO 7241A KZE ISO 7241 A SERIES HYDRAULIC QUICK COUPLINGS(Steel) KZEB ISO 7241A SERIES HYDRAULIC QUICK COUPLINGS(STEEL BALL) KZESS ISO 7241A SERIES HYDRAULIC QUICK COUPLIGNS(STAINLESS STEEL) 2.ISO 7241 B KZB ISO 7241 B SERIES HYDRAULIC QUICK COUPLINGS (STEEL) KZD ISO 7241 B SERIES HYDRAUIC QUICK COUPLINGS(BRASS) KZBSS ISO 7241 B Series Hydraulic Quick Couplings(stainless Steel) 3.4000SERIES ISO 5675 KPC DOUBLE SHUT-OFF COUPLINGS WITH HARDEND STEEL POPPETS(STEEL)/PIONEER4000SERIES INTERCHANGE 4.PUSH AND PULL TYPE KZA Push And Pull Type Hydraulic Quick Couplings(STEEL) KZAF PUSH AND PULL TYPE HYDRAULIC QUICK COUPLINGS(STEEL) KZAV PUSH AND PULL TYPE HYDRAULIC QUICK COUPLINGS(STEEL) 5.ISO 16028 QKPT FLAT Face Hydraulic Quick Couplings(Carbon Steel)/international Interchange ISO 16028 6.QKTF Thread To Connect Nder Pressure Couplings(BRASS)