BS ISO 14540:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Dimensional requirements
5 Performance requirements
6 Best practice
7 Designation
8 Marking
9 Identification statement (reference to this
  International Standard)
Annex A (normative) - Basic dimensions of
        the 1-18 UNS inch screw thread
Bibliography

Describes dimensional and performance requirements for hydraulic screw-to-connect quick-action couplings designed to be used at pressure of 72 MPa (720 bar) in static conditions as an interface between a hydraulic power unit and a tool.

This International Standard specifies dimensional and performance requirements for hydraulic screw-to-connect quick-action couplings designed to be used at pressure of 72MPa (720bar¹)in static conditions as an interface between a hydraulic power unit and a tool. Typical applications for these couplings are related to hydraulic jacks, rams, clamping devices, hand tools, and cylinders.

This International Standard covers two types of such couplings: the “P?? type, which has a poppet valve, and the “S?? type, which has a spherical valve.

¹ 1 bar = 100 kPa = 10⁵ Pa = 0,1MPa; 1 Pa = 1 N/m²