For over 20 years, AMPCO has been one of the leading manufacturers of quality, multi-use, pressure stack chimney exhaust systems. AMPCO product installations and applications include boilers, generators, commercial kitchen grease duct, laboratory fume hoods and coffee roasters. All AMPCO products are UL tested and listed to the most stringent safety standards, ensuring you the finest product available.

AMPCO Products

Multi-Use Pressure Stacks/Chimney

Single Wall

Model N is a single wall modular, prefabricated positive pressure venting system

Features & Benefits

• Factory-built for high quality, durability and long life
• Safety tested and listed to multiple UL chimney liner standards, signifying compliance with U.S. and Canadian codes UL 1777, ULC S635 (ref. installation instructions)
• 5” to 48” diameters (ID) to fit the wide range of commercial applications and customer specifications
• 1400 °F maximum temperature rating (ref. NFPA 211)
• Array of components and accessories designed to make a complete installation simple and quick

Double Wall

Various models depending on your system requirements.

Features & Benefits

• Factory-built for high quality, durability and long life
• Insulation options include 1” air or up to 4” of dense fiber blanket for stringent skin temperature requirements
• Safety tested and listed to multiple UL standards, signifying compliance with U.S. and Canadian codes (UL 103HT, 641, 2561; ULC C959)
• 5” to 48” diameters (ID) to fit the wide range of commercial applications and customer specifications
• 1400 °F maximum temperature rating with low clearance to combustibles (ref. installation instructions)
• Array of components and accessories designed to make a complete installation simple and quick

Kitchen/Grease Duct

Zero Clearance & Fire-Rated

AMPCO ZClear™ features an integral fire-rated chase design for zero clearance to combustibles

Features and Benefits – Models IVSI-Z3/Z4

• Stainless steel cylindrical construction, for superior strength at much higher temperatures versus rectangular carbon steel field fabricated systems
• Zero clearance to combustibles with an integral 2-hour fire rating
• 5” to 36” diameters (ID) to fit the wide range of commercial applications and customer specifications
• 3” or 4” wall thickness with high temperature dense fiber insulation to meet stringent temperature requirements
• Small footprint with minimal horizontal slope required (1/16” per foot) as compared to field welded/wrapped rectangular duct (1/4” per foot)
• Safety tested to stringent test requirements – UL 1978, UL 2221 and ASTM E-2336; includes a 30-minute, 2000 °F grease fire test

Double Wall Kitchen/Grease Duct

Models VSI and IVSI are double wall, modular, grease duct solutions

Features & Benefits

• Factory-built for high quality, durability, ease of installation and long life
• Stainless steel cylindrical construction, for superior strength at much higher temperatures versus rectangular carbon steel field fabricated systems
• 5” to 48” diameters (ID) to fit the wide range of commercial applications and customer specifications
• Insulation options include 1” air or up to 4” of dense fiber blanket for stringent skin temperature requirements, adhering to clearance to combustible requirements
• Small footprint with minimal horizontal slope required (1/16” per foot) as compared to field welded/wrapped rectangular duct (1/4” per foot)
• Safety tested to stringent test requirements – UL 1978; includes a 30-minute, 2000 °F grease fire test
• Array of components and accessories designed to make installation simple and quick

Single Wall Kitchen Grease Duct

Model N is a prefabricated single-wall negative, neutral, or positive pressure capable venting system.

Features & Benefits

• Factory-built for high quality, durability, ease of installation and long life
• Stainless steel cylindrical construction, for superior strength at much higher temperatures versus rectangular carbon steel field fabricated systems
• 5” to 48” diameters (ID) to fit the wide range of commercial applications and customer specifications
• Small footprint with minimal horizontal slope required (1/16” per foot) as compared to field welded rectangular duct (1/4” per foot)
• Safety tested to stringent test requirements – UL 1978; includes a 30-minute, 2000 °F grease fire test
• Array of components and accessories designed to make installation simple and quick

Multi-Appliance All-in-one Ventilation System

Designed and engineered for common ducting multi-story tenant space appliances such as bathroom fans, clothes dryers, or domestic range hoods.

Features and Benefits

• Eliminates need for separate fire-rated shaft wall construction and field fabricated ductwork
• Eliminates fire dampers
• Zero clearance to combustibles with compact footprint maximizes valuable room space
• UL/ULC classified 2-hour fire rating
• Cylindrical construction for superior strength
• Factory-built consistent high quality and durability
• 5”-36” diameter ID to fit wide range of applications
• Modular design is simple and quick to install
• Available for one or more integral subducts
• Reduces multiple trades and inspections to only one
• Array of system components available
• Engineering and technical support for system design
• Limited lifetime warranty

High Efficiency Appliance Venting

UL 1738/ULC S636 Listing

Special Gas Vent

AMPCO models VSI/IVSI/N with special gas vent listing, are positioned to complement Heatfab Saf-T Vent® product by broadening the applications on commercial and industrial projects requiring large diameters, above 32” ID, specifications calling for double-wall construction with greater than 1” of insulation, and projects requiring a 2-hour fire rated chimney:

Features & Benefits

• Tested and listed to UL 1738/ULC S636
• Ability to expand offering up to 48” diameter (ID) to fit wide range of applications
• Zero clearance model featuring integral 2-Hour Fire Rating, tested and listed to UL 2221
• Single wall and double wall air/fiber insulated models
• Stainless steel material grade Type 316 inner wall, with several outer wall options
• Viton® 550 °F SGV field applied sealant; New AMPCO Part No. 4000004
• Array of components and accessories designed to make installation simple and quick
• Available on 5-7 Day Quick Ship Program
• 5-Year Limited Warranty standard for Special Gas Vent applications