ATS has representatives (and/or satellite factories) in many states in the USA, and in Korea (MD), China (MD), Singapore (TIS), Malaysia (ATS Asia), Israel (Bel) and Europe (GartnerConsult). For the representative/factory closest to you, please see the map on page _____.
We manufacture round duct in sizes 2”Ø (50 mm) to 160”Ø (4000 mm). We also make rect- angular and oval ductwork. Please see ATS Part Type Drawings in the Mechanical Drawing Guide of this Reference Guide (Pages ______) or on our website at www.atsduct.com <http://www.atsduct.com>.
ATS’ 4922 FireSafe™, StaticSafe™ and other ducts are used to exhaust corrosive, hazardous or explosive fumes in the following industries:
The advantages of ATS duct over lined stainless steel duct include:
NBS Standard PS 15-69 deﬁnes the corrosion liner to be that portion of the duct that is made of mat and veil (which has a minimum of a 75/25 ratio of resin/reinforcement).
According to this deﬁnition, ATS duct liners are a minimum of approximately 100 mils thick or greater, depending on the diameter of the duct. However, corrosion resistance is most highly dependent on the type of resin used. ATS uses a 50 mil (1.27mm) layer of high-grade vinyl ester resin on the initial liner layer. The innermost surface of ATS duct is made using a double layer of synthetic veil, having a resin/reinforcement ratio of 90/10, for maximum corrosion resistance. When manufacturing ATS 4922 FireSafe™ Duct, ATS always uses synthetic veil and a BPO/DMA cure system for maximum corrosion resistance.
Manufacturers of composite duct commonly refer to a liner as the portion of the duct that forms the corrosion resistant barrier. Corrosion resistance is dependent on the resin used to saturate the reinforcing layers (glass veil, synthetic veil, chopped strand mat, etc.). Some manufacturers refer to halar veil as being an important corrosion barrier, but veils are porous and the liner is still mainly dependent on the resin for its corrosion resistance. Glass veils should be avoided in corrosive environments, especially those with hydroﬂuoric acid.
Synthetic veils are preferable in corrosive environments, but remember to ask for the cor- rosion resistance test results on the manufacturer’s laminate (resin combined with veil and mat) for accurate evaluations of corrosion resistance.
No. A veil alone does not determine the corrosion resistance of a liner. One needs to consider the porosity of veil. In the case of a ﬁberglass liner, the resin which is used to saturate the veil in the liner is the most important factor in corrosion resistance. (Please note that the ATS DuraSafe™ FRH duct and ATS FRT duct/pipe mentioned in the PRODUCT section of this Reference Guide do NOT use a veil in the liner, but rather employ a solid fluoropolymer ﬁlm that is impervious to attack.)
In some cases owners will indicate that they intend on sprinkling ATS duct, or an insurance official or building official will think it is necessary. Please notify ATS staff if this situation arises. In some cases, there is a misunderstanding regarding ATS Duct’s technical capabilities. (In other cases, there could be valid reasons for this requirement. For example, the concentration of solvents could be above 10% of the TLV. NOTE: All FM-approved ducts are limited to exhausting vapors from a maximum of one square foot of solvent. )Whatever the situation, ATS staff will help determine the validity of the requirement.
ATS itself has a total of 80,000 square feet of manufacturing space worldwide. ATS has two manufacturing locations, one in Richmond, California (near San Francisco) and one in Johor, Malaysia, each with 40,000 square feet (4000 square meters). However, ATS satellite factories have an additional 120,000 square feet (12,000 square meters) of manufacturing space. Total = 20,000m2.
Between the USA and Malaysia ATS has 8 automated and/or computerized winders that produce 1500 lineal feet of duct per day. This can be increased significantly with extra shifts to meet your critical project schedules.
ATS itself does not install duct. However ATS satellite factories in Korea, China and Israel do installation.
Cost of installation is comparable. However, because ATS can be modified on site, when logistics are considered, ATS is less. ATS is a modular system. Please refer to our Comparison section on page ___ for a more detailed answer to this question.
The initial cost of these materials is considerably cheaper than ATS. However, ATS ducts are firesafe and do not require sprinklers. On a lifetime basis, when considering sprinklers and their attendant costs (drains, gray water systems, maintenance, etc.) ATS is more economical Some owners choose not to use sprinkler protection on duct systems made of highly combustible materials like polypropylene. Besides higher insurance premiums, owners run the risk of disastrous fires. See pages _____.
Yes. But, the price list is recommended for budgetary purposes only. This will give you an idea of the cost of the materials, but we recommend that you contact ATS for actual material cost based on a material list. The ultimate cost of the project could be affected by many different reasons, such as lead times, quantity of repetitive pieces, complexity of the order, etc. Our sales staff will analyze these factors and provide you with the lowest most cost effective bid for your project.
ATS 4922 FireSafe™ Duct is listed with FM for 10” to 60” diameter. FM does not officially monitor ducts in other sizes. However, Factory Mutual normally “accepts” ATS ducts in all diameters on a job site. If there are any questions on this, ATS can put you in touch with FM’s appropriate field office.
ATS fabricates ducts in 20’-0” (6 meter) lengths. Normally, ATS ships ducts in 10’-0” lengths.
Yes. ATS is a full service manufacturer and will make the product to your specifications. We will spool duct when customers request it. Spooled orders will take longer to process than regular orders.
Yes. ATS makes flanged ducts on request. The ATS H- Collar™ and/or ATS Slip Collar™ joints are the standard ATS methods of joining duct. Flanges are also useful when joining dissimilar materials, such as connections to PVC, Polypropylene, Regular FRP and Stainless Steel. ATS also provides a “Slip Collar Flange” (a flange attached to a slip collar, see ATS Mechanical Drawing Guide, part type #77). The ATS Slip Collar Flange™ provides the flexibility of installing flanges at the job site. The Slip Collar Flange is convenient, easily installed, and can be ordered even before measurement details are certain.
Connecting ATS to other materials can be done either through the use of flanges. Also, refer to “Joining Dissimilar Materials” section on page ____ of this Reference Guide.
The shelf life of ChemBond is 5 years if stored at ambient room temperature, 70°F (21°C) out of sunlight. Be sure to stir the resin prior to use, blending in all sediment that may have separated from the mix and settled to the bottom of the container.
The slip collar is approximately 1/16 of an inch, about 60 mils, in thickness. Pitching horizontal duct at a slope of 1/4” per foot to a condensate drain (which we recommend) will remove condensate and other liquids from the duct. At this slope angle, there is no room for condensate to collect at the slip collar.
Slip collars are shipped from the factory with the edges coated with resin to protect from chemical attack.
ATS’ ChemBond Joining system used with ATS H-Collars and ATS Slip Saddle tap is designed to automatically protect the cut edges of ducts.
Please refer to the Installation Instructions for more details.
For cutting normal circumferential joints, ATS recommends the use of a Vacuum Saw, which provides a dramatic reduction of dust when cutting. For cutting branch taps, where dust control is critical, ATS recommends a two-person team, one to do the cutting with a jig saw and the other to hold a vacuum near the blade edge.
See page ___ for a discussion on this point.
FM’s duct standard is FM 4922, which has been in existence since the early 1980s.
FM#4922: In this test, ductwork is subjected to horizontal and vertical fire tests, where the duct is connected to a booth containing a heptane pool fire; a fan is connected to the opposite end of the duct. The flames are drawn into the duct simulating the duct exhausting a burning piece of equipment. To pass, the duct cannot collapse, emit smoke from the exterior, flames cannot be seen at the 23’-6” mark from the fire source and the temperature cannot exceed 1000°F at that point. Meeting the test requirements allows the duct to be installed without internal ﬁre suppression sprinklers. After the initial fire test, a manufacturer can obtain an approval for smoke removal for special purpose areas such as cleanrooms by running a supplementary test, the smoke removal test. The fire is shut off and the air velocity is increased to 2000 feet per minute. The duct receives smoke removal approval if it does not collapse or breach from the fire booth. See diagram on page ___ of this Reference Guide.
To pass FM 4922, a manufacturer must also subject flat samples to the ASTM E-84 and FM 4922 tests. These two additional tests are required.
FM #4910’s standard was created in 1996-7 to insure that all materials that go into clean rooms will have limited combustibility.
FM#4910 an explanation
FMRC Cleanroom Materials Flammability Test Protocol is a series of tests to determine the Fire Propagation Index (FPI) and the Smoke Damage Index (SDI) of materials for use in cleanrooms. The average of the FPI individual peak values is used for classiﬁcation of non-propagating vs. propagating. An FPI equal to or less than 6 is classiﬁed a non-propagating beyond the ignition zone.
The SDI is the product of the yield of smoke, known as the smoke index (SI), and the FPI. The SI values are multiplied by the FPI to derive the SDI. An SDI equal to or less than 0.40 is used as the criterion for signiﬁcantly limiting smoke concentration.
We recommend the installation of expansion joints approximately every 70 lineal feet on straight runs outside the building. These expansion joints are typically made of EPDM, a material with good chemical resistance and UV stability. Of particular importance is the type of hanger or saddle system that is employed. See duct supports, page ____.) Also, refer to the section entitled Expansion Joints on page____.
ATS duct can be reused after installation. The limiting factor will be determined by the duct’s previous exposure to chemicals. It is of course imperative that duct of any type that has been used to exhaust highly corrosive or dangerous chemicals needs to be handled with care and decontaminated if removed from service. If the duct has had limited chal- lenges and/or its integrity has not been breached, the duct may be reused after proper cleansing (if cleansing is necessary).
There is no shelf life to ATS duct. However, it is necessary to store it properly indoors. Duct should not be stored outside. It is important to keep the duct clean and dry. Sloppy handling at job sites can compromise the usefulness of the duct. Duct should not be stacked in a pile—it is recommended, whenever possible, to store duct on its end. If stacking is necessary, it is recommended that the end plates that kept the duct ends in shape during shipment be left in. This will help to resist the weight of duct resting on top.
Yes. We have our 4-page brochure, installation instructions and MSDS in French, German, Italian, Japanese, Korean, Old Character Chinese, New Character Chinese, and Spanish. Please see our website at www.atsduct.com <http://www.atsduct.com> to peruse or print copies of the translated literature. Check
As of 2016, ATS offers the ATS Slip Saddle Tap. This tap has an internal flange that provides a 100% seal. See page ___.
Yes. ATS’ standard warranty is two (2) years, provided the duct is installed in accordance with manufacturers recommendations. Annual inspection service is offered at no cost, the purpose of which is to monitor and maintain the duct system performance.
NFPA 318 STANDARD for the PROTECTION of CLEANROOMS states the following:
Section 3.3.4: “Exhaust ducts penetrating ﬁre resistance-rated construction shall be contained in an enclosure of equivalent ﬁre-resistive construction. Fire resistance construction and enclosure with equivalent ﬁre resistive construction shall extend 6 ft. (1.97 m) or a distance equivalent to two times the duct diameter, whichever is greater, on either side of the rated construction.”
Section 3.3.5: “Fire dampers shall not be installed in exhaust ducts.”
See page ____ for details for fire walls.