Danfoss 013G-8252 Operator

The Danfoss 013G-8252 (RA 2000 Operator) is a professional-grade thermostatic actuator designed for precise hydronic temperature control in both hot water and two-pipe low-pressure steam systems. This valve-mounted dial features a 6-foot remote sensor, making it the preferred solution for installations where the radiator or convector is enclosed or located in a way that prevents accurate ambient air temperature sensing at the valve head. By decoupling the sensor from the valve body via the flexible 6' capillary tube, you eliminate the risk of short-cycling and premature valve closure caused by localized radiant heat.

This operator utilizes a vapor charge sensing medium to ensure fast-acting modulating response, maintaining space comfort within a range of 45°F to 86°F. The unit incorporates a snap-action mechanism for tool-free attachment to Danfoss RA2000 series valves, significantly reducing field labor. For systems requiring freeze protection, the dial includes a dedicated frost setting (marked with a "*" symbol) to maintain a minimum temperature of approximately 45°F. This is a rugged, field-proven component for contractors managing radiator temperature control in residential or commercial settings.

• Precise Remote Sensing: 6' capillary allows sensor placement away from drafts and heat pockets for accurate TRV (Thermostatic Radiator Valve) performance.
• Universal Compatibility: Engineered specifically for the Danfoss RA2000 series valve bodies, ensuring a tight, reliable fit.
• Efficient Installation: Professional snap-action installation does not require specialized tools, speeding up multi-unit retrofits.
• System Versatility: Rated for maximum media temperatures up to 250°F and suitable for both vacuum and pressure systems up to 15 psig steam.
• Integrated Freeze Protection: Built-in frost setting prevents pipe bursts in unoccupied spaces during extreme weather.

When should I use a remote sensor instead of a built-in sensor?
Use the Danfoss 013G-8252 when the radiator is behind a cover, under a deep windowsill, or in a tight corner where air cannot circulate freely around the valve.

Can this be used on one-pipe steam systems?
No, this model is designed for hot water or two-pipe steam. One-pipe steam systems require specific venting operators such as the RA2000 1PS series.

Is the capillary tube field-extensible?
The 6-foot capillary is factory-sealed and cannot be cut or extended. If a longer reach is required, alternative remote mounting kits should be selected.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.