A9739 | Thermostat Air Vent | Armstrong International

**Armstrong International Thermostat Air Vent (A9739)** Armstrong International's A9739 Thermostat Air Vent effectively removes air from hydronic heating systems, preventing air locks and ensuring optimal system performance. It features an adjustable pressure setting, allowing for precise control of air release. Made of durable brass, the vent is built to withstand the harsh conditions of commercial and industrial applications. Its 3/8" female NPT connection provides easy integration into existing piping systems. The vent's compact design and low profile minimize obstruction, making it suitable for installations where space is limited. It operates with a temperature range of 20 to 250°F, making it ideal for a wide range of hydronic systems. By eliminating air from the system, the A9739 vent enhances heat transfer efficiency, prevents corrosion, and extends the life of system components. Our HVAC supply store is your trusted source for top-quality industrial products. We offer competitive prices and fast shipping to keep your operations running smoothly.