Effox-Flextor-Mader (EFM) manufactures heavy-duty low-leak slide gate and zero-leak Slide Gate Dampers to provide isolation for flue gas and air systems. Slide gates, also referred to as Guillotine Dampers, are required to isolate systems for maintenance or for bypass purposes.
EFM has supplied slide gate dampers in the largest ducting systems in the industry. We have supplied gates with duct openings of 25 feet (7.6 m) wide and 35 feet (10.7 m) tall.
Our zero leak guillotine dampers can be pressure and temperature tested in our facilities to verify leakage at system design conditions.
Careful selection of blade and housing materials to meet the specific needs of your application will provide maximal resistance to heat stresses, corrosion, metal fatigue and distortion. Flextor has proven reliable designs in some of the most demanding thermal environments such as the Gas Turbine outlet, and high corrosion environments such as coal fired power plants.
Our High-Flex seats offer very tight shut-off, as much as 99.9 percent of flow, without the use of seal air fans. For critical applications, Flextor has proven designs which use seal air fans, fully enclosed bonnets and pressurized seals. Total isolation on even very high temperature applications can be achieved.
All EFM guillotine dampers are designed to be shipped in compact modules. Depending on size, one- piece, two-piece and three-piece designs are used so that minimal field assembly is required prior to start-up. All our dampers are fully assembled and tested in our facility, and then dis-assembled for shipment.