W. L. Gore & Associates, Inc.    Elkton,, MD 21921
Feb 22, 2012 Available in various sizes and thread types, Screw-in GORE® Protective Vents maintain high level of constant airflow in electronic housings and sealed devices used in lighting, solar, and telecommunication infrastructure applications. Design equalizes internal pressure, preventing premature failure of housing seals, and single-body construction provides protection against mechanical stress in addition to preventing ingress of water, dust, dirt, and other contaminants.

Spirax Sarco, Inc.    Blythewood, SC 29016
Apr 29, 2011 Suitable for vertical open-ended steam vent pipes, VHT Vent Heads safely discharge dry steam to atmosphere at low velocity, protecting personnel from injury and buildings from damage. Internal drain recovers condensate that would otherwise be directed to external drain and removes possibility of hot condensate exceeding temperature limitations of local drainage. Manufactured from austenitic stainless steel, vent heads are suited for blowdown vessels, feed tanks, and condensate receivers.

Advector Systems LLC    Grapevine, TX 76051
Nov 23, 2010 Suited for retrofit projects as well as new construction, inVENT works by manually regulating aerodynamic principals of HVAC system, such as throw and velocity of air that enters room. System moves conditioned air into room at high speed and causes air to grip ceiling, floor, and walls, providing even air distribution. Homeowners benefit from balanced room temperatures, minimized direct drafts and noise, and ability to make changes based on outdoor temperatures or personal preferences.

Airtec Products Corp    Fall River, MA 02720
Aug 11, 2010 Made of one-piece, corrosion-proof molded polymer, MH TuffBox is airtight and condensation-resistant, offering alternative to seamed metal register boxes for air distribution applications. Beaded rim on quick break-away collars helps hold flexible duct in place and speed fastening process. Models include MHS with 6 x 6 in. register box and 4, 5, and 6 in. dia collars; MH with 8 x 8 in. box and 6, 7, and 8 in. collars; and MHL with 10 x 10 in. box and 8, 9, and 10 in. collars.

Allegro Industries    Garden Grove, CA 92841-1410
Feb 04, 2010 Designed to maintain and re-direct air flow with minimal restrictions into manholes, sewers, and tanks, Manhole Ventilation Passthru (MVP) combines low profile air vent, 90° elbow, and built-in mounting in one unit. Weighing 11 lb, PVC coated, vinyl and polyester collapsible duct is heat resistant up to 180°F and stores in its own storage bag.

Novaflex Group, The    Richmond Hill L4B 1B7  Canada
Jun 19, 2008 Suited for industrial building construction projects, NovaVent(TM) Sealed venting system features fully-sealed, gasket connection combined with precision-engineered, close-tolerance construction. Eliminating need for field-welded joints, Double Fail Safe(TM) gaskets offer installers safe way to build venting system on-site. Available in 3-24 in. dia, system also features single-wall version that is only metallic venting system that can be cut to length in field.

DuctSox    Dubuque, IA 52002
Jun 02, 2006 Suited for use in HVAC industry, L-Vent features sealed, non-fraying edges to limit surface dusting that affects IAQ standards in occupied spaces. Product can be used for fabric duct in commercial building applications and offers even air dispersion. Cleanable through commercial laundering, design includes 1-3 rows of orifices ranging from ¼-1 in. openings, factory-engineered to produce airflows of 5-90 cfm at 0.5 in. wg.

Hart & Cooley, Inc.    Holland, MI 49423 3715
Dec 10, 2002 REZZINâ„¢ registers and diffusers are constructed of lightweight polymer materials that withstand heat and excessive moisture. Line includes 3-way deflection ceiling diffuser, double-deflection sidewall diffuser, 2-way floor register, modular core T-bar, and louvered T-bar. Many different sizes are available.

Hoffman Specialty, a unit of ITT Industries    Chicago, IL 60618-5523
Oct 11, 2002 Model 508 can be set for manual or automatic venting of water radiators. Cartridge contains hygroscopic discs that can be replaced without draining heating unit. Discs expand more than 50% in volume when soaked with water to seal off air vent passage within seconds. When water is removed, discs dry out and contract to original volume. Vent offers max working pressures of 15 psig (steam) and 50 psig (water). Applications include baseboard, steam, and hot-water radiators and convectors