Danfoss 013L-8011 Air Vent

The Danfoss 013L-8011 is a high-performance 1-pipe steam air vent designed for critical air elimination in residential and commercial steam heating systems. This straight-pattern valve features a 1/8" NPT connection, making it a standard replacement for radiator applications where rapid venting is required to prevent cold spots and ensure balanced heat distribution. Engineered for low-pressure steam systems, the 013L-8011 utilizes a precise thermostatic element that closes instantly upon contact with steam, preventing water hammer and energy loss. Its durable brass construction and corrosion-resistant internals provide reliable steam system balancing and improved fuel efficiency. For contractors performing steam radiator maintenance, this vent ensures optimal heat transfer by effectively purging air from the piping network. This Danfoss steam vent is a go-to solution for one-pipe steam system troubleshooting, offering a robust mechanical seal that stands up to the thermal cycling characteristic of intensive heating cycles.

• Compatible with standard 1/8" NPT straight-pattern radiator tapping for easy field installation.
• High-capacity air discharge facilitates faster steam system heat-up times.
• Thermostatic operation prevents vacuum lock and ensures consistent radiator venting performance.
• Durable metallic housing resists mineral buildup and high-temperature degradation in 1-pipe steam systems.
• Optimized for low-pressure residential applications to reduce boiler short-cycling and energy waste.

Is the Danfoss 013L-8011 adjustable?
This model is a fixed-rate vent designed for standard residential flow. For systems requiring varied venting speeds for balancing, verify your specific pipe run requirements.

Can this vent be used on 2-pipe steam systems?
No, the 013L-8011 is specifically engineered for 1-pipe steam air elimination. Using this on a 2-pipe system may lead to bypass issues or improper condensate return.

What causes a steam vent to hiss or leak water?
Hissing is often caused by debris trapped in the orifice or a failing thermostatic element. Ensure the vent is installed vertically and the system pressure is correctly set for low-pressure steam operation.

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.