DIN EN ISO 1179-1:2014-03

This part of ISO 1179 specifies dimensions for ports with ISO 228-1 threads for use with non-adjustable stud ends described in ISO 1179-2, ISO 1179-3 and ISO 1179-4 and with adjustable stud ends described in ISO 1179-3. Ports in accordance with this part of ISO 1179 are applicable for use with: - ISO 1179-2 heavy-duty (S series) stud ends with type E sealing at working pressures up to 63 MPa (630 bar) and light-duty (L series) stud ends at working pressures up to 25 MPa (250 bar); - ISO 1179-3 light-duty (L series) stud ends with type G sealing at working pressures up to 31,5 MPa (315 bar) and ISO 1179-3 light-duty (L series) adjustable stud ends with type H sealing at working pressures up to 20 MPa (200 bar); - ISO 1179-4 stud ends with type B sealing at working pressures up to 40 MPa (400 bar) for the S series, up to 25 MPa (250 bar) for the L series, and up to 10 MPa (100 bar) for the LL series; except for the G2 size port, which in hydraulic fluid power systems is used mainly with accumulators and for which ISO 1179-3 and ISO 1179-4 do not specify stud ends. The permissible working pressure depends upon size, materials, design, working conditions, application, etcetera. The following modifications have been made with respect to DIN EN ISO 1179-1:2008-08: a) in Table 1, the dimensions of thread size G 2 have been changed; b) informative Annex A regarding port depths in ISO 1179:1981 and ISO 1179-1:2007 has been added; c) the standard has been editorially revised. This document has been prepared by Technical Committee ISO/TC 131 "Fluid power systems" of the International Organization for Standarization (ISO) and has been adopted as prEN ISO 1179-1:2012 by Technical Committee ECISS/TC 110 "Steel tubes, and iron and steel fittings", the secretariat of which is held by UNI (Italy). Working Committee NA 082-00-07 AA "Rohrverschraubungen" ("Tube connections") at the Piping and Boiler Plant Standards Committee (NARD) is responsible for the German collaboration.