top of page

For conduction of corrosive gases and vapors.

Thermoplastics with excellent chemical and mechanical resistance, plates made in Germany of the SIMONA® and RöCHLING® brands

The most modern procedure in the world for the manufacture of ducts entirely in thermoplastic for the chemical, food and pharmaceutical industry. 

The mechanical design of our ducts is carried out with the specialized Software RITA® 5.0 and our personnel have the DVS eV (German Association for Welding and Related Processes) certification, we comply with the DIN Standard (German Institute for Standardization) and EN (European Standards )

PVC (polyvinyl chloride) and PP (polypropylene) plates and welds, imported and processed by EFISA® for the manufacture of ducts, connections and equipment.

We have a butt welding machine with CNC control model 40.50 PS-W of the INGENIA® brand from Germany, with the capacity to weld and roll thermoplastic plates up to 4 m wide and 50 mm thick, with high quality and efficiency.

Tell us the product, its concentration and temperature; EFISA® selects and specifies the best option within a wide range of high performance thermoplastics available in the international market.

Diameters: 12”, 14”, 16” 18”, 20”, 22”, 24”, 30”, 36”, 42”, 48”, 54”, 60”, 72” and 84”

Operating pressure from 25 to 150 PSI

Circular shaped ducts are more economical and reliable than rectangular shaped ones.
Connections: Elbows 45°, 90°, Tees, Yes, Concentric Reducer, Eccentric Reducer, Flanged Nipples and Blind Flanges.

Plain ends for butt joint with over rolled or flanged ends.

Butt joints with overlaminate: EFISA® can carry out the service or supply the materials (resin and fiberglass) as well as training the client's personnel to carry out the assemblies. 

Flanged joints: the assembly is done using screws and gaskets.

Butt joints are recommended for long length duct installations and combined with flanged joints where ductwork joins valves, fans, etc.

Flange dimensions, except for flange face and bolting thicknesses, conform to ANSI B16.5 standards for 150 PSI. To join the pairs of flanges, we recommend placing an elastomer gasket at least 5 mm thick, with a hardness of between 60 and 80 Shore A; this gasket must be smooth and full face (FF).

Hex head bolts must be used, with double flat washer (on both sides of the FRP flange), optional lock washer and hex nut. The screw must be lubricated beforehand. The tightening of the nuts must be done by hand and smoothly; using a torque wrench taking care not to exceed 14 Nm (10 lb-ft). 

Ducts and connections are manufactured in accordance with the International Standards ASME RTP-1-2015 and NBS PS 15-69.

bottom of page