Barnebey & Sutcliffe

835 North Cassady Ave
Columbus, Ohio 43219

BUBBLE TIGHT ISOLATION DAMPER

BTD Series

The Barnebey Sutcliffe Bubble Tight Isolation Damper (BTD) is designed for isolation of critical filter trains or environmental emission control systems during change-out, decontamination, shut-down, and/or testing services without disabling the entire system or risking air emissions that could affect EPA compliance. Damper operation can be manual or electric. Dampers can be manufactured out of 304 stainless steel. Other materials available upon request.

Square and Round BTD

Square BTD                                                                         Round BTD

 

BTDs can be used in:

• Room isolation
• Containment housings
• Dust collectors
• HVAC
• Building isolation systems

The damper is also available with a bubble tight certification per ANSI test method N510-1980. In a hazardous atmosphere, the Series BTD Isolation Damper enables the system to be isolated for decontamination, filter change-out or to allow scan testing by an auxiliary air supply system. In a nonhazardous atmosphere, it prevents particulates or vapor phase chemical contaminates from reaching the atmosphere or other equipment and processes to which the system being isolated may be connected.

Design Specifications

BTD Isolation Dampers are available for either round or square duct in temperatures ranging from -50° F to 375° F. The damper is designed with a single blade mounted to a shaft with a fabricated flange frame. The damper contains a full circumference silicone blade seal that is retained by a steel clamp ring fastened by hex nuts. Manual or electric actuators can be supplied as required.

The blade seal is field adjustable and replaceable. The shaft is supported in self-lubricating TFE lined filament wound bearings mounted external to the damper frame with O-ring shaft seals.

Standard sizes range from 8" to 36" round and custom sizes are also available.

Square BTD

The square BTD attaches directly to the containment housing, which eliminates the need for transitions between the housing and damper as is required when using the round BTD. Damper housing is 24" square duct with a flange total width of 27"; a total flange height of 30"; and adds 26 ½" to the length of the containment unit. Damper operation can be manual, electric, or pneumatic.

Damper Dimensional Chart

 

Safety Message

Activated carbon preferentially removes oxygen from air. In closed or partially closed containers and vessels, oxygen depletion may reach hazardous levels. If workers are to enter a vessel containing carbon, appropriate sampling and work procedures for potentially low oxygen spaces should be followed, including all applicable Federal and State requirements.

Limitations of Liability

Notwithstanding any provision to the contrary herein, in no event shall Supplier or its contractors or suppliers of any tier be liable to Purchaser for any indirect, special, consequential, incidental or punitive damages as a result of a breach of any provision hereunder or for any other claim of any kind arising out of or relating to this document, whether in contract, in tort (including without limitation, negligence or strict liability), indemnification or otherwise. Notwithstanding any provision to the contrary herein, for all losses, damages, liabilities or expenses (including attorney’s fees and costs), whether for indemnity or negligence, including errors, omissions or other acts, or willful misconduct, or based in contract, warranty (including any costs and fees for repairing, replacing or re-performing services or curing a breach hereof), or for any other cause of action (individually, a “Claim”; collectively, “Claims”), Supplier’s liability, including the liability of its insurers, employees, agents, directors, and officers and all other persons for whom Supplier is legally responsible, shall not, to the maximum extent permitted by law, exceed in the cumulative aggregate with respect to all Claims arising out of or related to this document, the total amount of compensation paid to Supplier hereunder. All Claims of whatsoever nature shall be deemed waived unless made in writing within forty-five (45) days of the occurrence giving rise to the Claim.

Warranty Disclaimer

Calgon Carbon Corporation warrants that the Bubble Tight Isolation Damper will be free from defects in materials and workmanship for a period of 90 days following the date of purchase. In the event of a breach of this warranty, Calgon Carbon Corporation will, in its discretion, repair or replace any defective parts or the complete unit during the warranty period. This warranty does not apply to defects caused by (i) normal wear and tear, (ii) accident, disaster or event of force majeure, (iii) misuse, fault or negligence of or by Buyer, (iv) use of Bubble Tight Isolation
Damper in a manner for which it is not designed, (v) external causes such as, but not limited to, power failure or electrical power surges, or (vi) improper storage and handling of the Bubble Tight Isolation Damper. EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY STATEMENT, CALGON CARBON CORPORATION DISCLAIMS ALL OTHER WARRANTIES, WHETHER STATUTORY, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CALGON CARBON CORPORATION DOES NOT WARRANT THAT THE BUBBLE TIGHT ISOLATION DAMPER ARE ERROR-FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT. ANY ADVICE OR ASSISTANCE FURNISHED BY CALGON CARBON CORPORATION IN RELATION TO THE BUBBLE TIGHT ISOLATION DAMPER PROVIDED FOR HEREUNDER SHALL NOT GIVE RISE TO ANY WARRANTY OR GUARANTEE OF ANY KIND. THIS WARRANTY WILL TAKE PRECEDENCE OVER ANY AND ALL OTHER WARRANTIES UNLESS SPECIFICALLY DISCLAIMED AND REFERENCED BY CALGON CARBON CORPORATION.

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