The Danfoss radiator lockshield valve is designed for use in domestic heating systems and meets the requirements in BS 2767-10. Adjustment of the lockshield for regulation and isolation is by means of a 6 mm allen key socket in the valve body which is normally covered and protected by a screw-on brass cap. The valve body is fully interchangeable with radiator thermostat valve bodies and is adjusted by means of a 6mm allen key. It is made of nickel-plated brass for easy installation.