摘要:
An improved radiator vent valve includes a freely movable float in a cylindrical casing. The float is formed from a solid sphere of polypropylene. The float normally rests on a bimetallic thermostatic strip which has its ends folded under. The thermostatic strip rests on the bottom wall of the casing and is held in place by gravity, i.e., no fasteners or mechanical connection is made to the thermostatic strip.
摘要:
The invention relates to a steam heating system and particularly to a vent control unit for a radiator in a one pipe type steam heating system. The vent control unit includes a thermostatically controlled valve for modulatingly venting air from the radiator to control the entrance of steam into the radiator in accordance with the heating requirements of the room. A check valve which bypasses the thermostatically controlled valve is provided to insure the admittance of air to the radiator during certain light heating conditions when the thermostatically controlled valve may be closed during a period when air must be admitted to the radiator to facilitate proper operating conditions.