This document specifies definitions@ requirements and test methods for thermostatic radiator valves referred to hereafter as thermostatic valves. This standard applies to two port thermostatic valves with or without pre-setting facility and thermostatic integrated valves with or without pre-setting facility for fitting to radiators in wet central heating installations up to a water temperature of 120 ??and a nominal pressure of PN 10. This standard further specifies the dimensions@ the materials and the connection details of four series of straight and angle pattern thermostatic radiator valves of nominal pressure ??PN 10. This standard can be used as reference in a CEN/CENELEC Certification Mark System on thermostatic radiator valves.