DuraVent -DuraStack® Positive Pressure Chimney

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The DuraStack® Models DIS and DAS venting systems are designed to offer the ultimate in installation convenience and versatility for a variety of applications. Certified for commercial chimney as a modular double-wall positive pressure chimney system.


Category: boiler stacks | chimney stacks | double-wall vent stacks...

MasterFormat: Central Heating Equipment | Breechings, Chimneys, and Stacks | Fabricated Stacks...



DuraVent
877 Cotting Ct.
Vacaville, CA 95688
Tel: (800) 835-4429
Fax: (707) 446-4740

customerservice@duravent.com

https://duravent.com/

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Overview


DuraStack® Positive Pressure Chimney

The DuraStack® Models DIS and DAS venting systems are designed to offer the ultimate in installation convenience and versatility for a variety of applications. Certified for commercial chimney as a modular double-wall positive pressure chimney system. Factory built for boiler breeching, engine exhaust, and chimney stack. Grease duct (DIS only) and diesel exhaust applications. Thick-gauge material for the inner pipe and coupling provides a strong and rigid assembly. Self-centering flue design significantly simplifies and accelerates the installation process. Coupling configuration (patent pending) requires only one locking band and the use of a regular, less expensive, high-temperature silicone sealant.

Available in sizes from 5″ to 36″ diameters, the DIS line offers double-wall, 2″ insulated chimneys, and the DAS offers a 2″ air insulated product. For premium corrosion resistance and durability, the inner wall is constructed from .035″ Stainless Steel 304 or 316. This is coupled with a .018″ Stainless Steel 304, 316 or Galvalume® (Aluminum-zinc coated) steel outer wall. The DIS is lined with the highest-quality insulation, densely packed to ensure low heat loss, maximum draft and a 1″ clearance to combustible materials.

Specifications

Applications

5″-36″ DuraStack® Model DIS/DAS is a modular double-wall positive pressure chimney system. Factory built for boiler breeching, engine exhaust, and chimney stack. Grease duct (DIS only)

Materials and Construction

5″-12″ diameter pipe features inner wall options of .035″ 304 or 316 stainless steel. Outer wall options of .018″ 304, 316, or galvalume steel. Features a laser weld interior and exterior joint.

14″-24″ diameter pipe features inner wall options of .035″ 304 or 316 stainless steel. Outer wall options of .018″ 304, 316, or galvalume steel. Features a plasma weld interior joint and a pittsburg lock exterior joint.

26″-36″ diameter pipe features inner wall options of .035″ 304 or 316 stainless steel. Outer wall options of .024″ 304, 316, or galvalume steel. Features plasma weld interior joint and a pittsburg lock exterior joint.

Clearances

DIS: 2″ clearance for restaurant grease duct and 1″ clearance for building heating appliance chimney and 1400°F factory-built chimney.

DAS: 4″ clearance for building heating appliance chimney and 1400°F factory-built chimney.

Diameters

5 “-36”

Listings

UL 103, UL 1978 (DIS only), ULC/ORD C959, ULC S604.


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