Boiler Exhaust Stack Rain Caps

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Boiler exhaust stack rain caps.

Made from galvanized spiral pipe for strength and durability. Close umbrella roof vent caps protect commercial industrial or residential duct and vent pipe installations from weather and debris. Duravent 6 type b gas vent rain cap for high wind regions. Stack caps that deflect the exhaust jet have a detrimental effect on exhaust plume rise.

Two nylon zip ties are included. The built in gutter system is designed to prevent rain and snow from entering the stack. Each features a black steel roof cap with a built in back draft damper and bird screen. Available in most sizes.

When fan is on flaps are forced out of the way to provide a clear path for air movement. 4 4 out of 5. One of the world s leading manufacturers of flue and chimney systems for the exhaust of gases and ventilations. Rain cap is made of 26 gauge galvanized steel and measures 6 inches in diameter to efficiently keep rain from entering vent pipes.

4 4 out of 5 stars 25. Semi circular flaps butterfly damper cover the exhaust stack when fan is off. The flapper damper on this type of cap may corrode allowing the flapper damper to stick open or closed. Energy efficient and environmentally friendly.

General engineering data 7 initial gas pressure total press drop gas line capacities cu ft hr through 100 ft length diameter of pipe in inches 1 2 3 4 1 1 1 4 1 1 2. A hinged flapper damper is opened by the exhaust flow from the stack and closes when the exhaust flow stops care must be taken to ensure continued proper operation. 2 pack roof vent mesh stainless steel wire mesh house vents mesh chimney cap meshes fan guard mesh fireplace. Small conical stack caps often do not completely exclude rain because rain does not always fall straight down.

Designed for 3 and 4 ductwork these roof cap vent kits help vent heat moisture and odors from bathrooms showers and recreation rooms. Not recommended for dryer venting. Sample specification boiler exhaust all our double wall chimney systems are part of a large family of cbi industrial positive pressure products for industrial and commercial applications. Periods of heavy rainfall may be accompanied by high winds that deflect raindrops under the cap and into the stack changnon 1966.