3/4 TR25S/R Self-Acting Temperature Regulator, Reverse action for cooling systems Material: Carbon Steel Connection: Screwed BSP. Available Thermostats: T.205 – 200 N (max. closing force). Capillary length: 3 cm PK sensor pocket. Main Features: - Easily adjustable temperature range. - Proportional temperature control. - Single seated, two way, reverse acting valve. - Built-in strainer. - Narrow thermostat neutral zone (1,5 to 2,5 ºC). - No special tools required for servicing. - Stuffing box is an integral part of the thermostatic element, allowing easy and simple maintenance of the valve.