Danfoss 013G-8025 Straight Body

The Danfoss 013G-8025 is a professional-grade 1" straight body thermostatic radiator valve (TRV) engineered for high-performance fluid control in residential and commercial 2-pipe hydronic heating and low-pressure steam systems. Constructed from durable nickel-plated brass, this RA2000 series valve transitionally manages the flow of media through free-standing radiators, baseboards, and convectors. It features a high-capacity fixed capacity design with a Kvs value of 2.8 m³/h and utilizes a robust EPDM rubber disc to ensure a positive seal against the seat, supporting a maximum working pressure of 145 psi and a test pressure rating of 232 psi.

Designed for field serviceability, the Danfoss 013G-8025 includes a packing gland assembly that technicians can replace while the system is under full operation, minimizing downtime during mid-season maintenance. The unit arrives with a protective grey plastic cap for manual flow control and pin protection during the rough-in phase. For automated temperature regulation, it is fully compatible with the Danfoss RA2000 operator series, allowing for precise ambient temperature sensing and modulation. With a maximum flow temperature rating of 250°F and a 15 psi maximum differential pressure, this straight pattern TRV provides the reliability required for modern radiator valve replacement and new installations.

• In-Service Repair: The integrated packing gland is replaceable under pressure, eliminating the need to drain or shut down the primary heating circuit.
• Dual-System Utility: Rated for both hot water and low-pressure steam applications (up to 15 psig).
• Corrosion Resistance: Heavy-duty nickel-plated brass body prevents oxidation and ensures longevity in demanding hydronic environments.
• Universal Compatibility: Standard 1" FNPT x MNPT union tailpiece connections facilitate seamless integration with existing 1-inch iron pipe thread headers.
• Leak-Free Performance: High-grade EPDM disc and O-rings provide a consistent seal up to a 15 psi differential.

Can the Danfoss 013G-8025 be used in a one-pipe steam system?
No, this specific straight body valve is designed for 2-pipe systems where the supply and return are separated. It is not compatible with 1-pipe steam radiators which require specialized air venting through the valve body.

Is an actuator required for operation?
While the 013G-8025 is supplied with a manual protective cap for installation, it requires a Danfoss RA2000 thermostatic operator or electronic actuator (sold separately) to function as an automatic temperature control valve.

What is the correct mounting orientation?
For optimal accuracy, the thermostatic operator should be mounted horizontally to prevent rising heat from the valve body or pipework from causing premature sensor closure.

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.