BTV-TA Concentric Butterfly Valve
2026-11-11 13:14
At Detora we make the BTV-TA Concentric Butterfly Valve for general industrial flow control. The valve combines shut-off and flow regulation in one compact body, and its symmetrical design suits large-flow, low-pressure and normal-temperature service. The stem sits on the geometric centre of the disc sealing surface and on the body channel axis, which is what defines the concentric layout. We supply knife gate valves, slurry valves, butterfly valves and ball valves for mining, water, gas and corrosive fluid applications.
Design and Function
The BTV-TA is a general-purpose valve with a compact structure and low cost. It can be used for shut-off, throttling and flow regulation, and the same valve can do both jobs in a line where a separate control valve would be an extra cost. The symmetrical body makes the valve easy to install between flanges, and the wafer, double flanged and lug body styles cover different piping arrangements. The valve is aimed at large-flow, low-pressure and ambient-temperature media, and it is a practical choice where the sealing requirement is normal rather than severe.
Technical Specification
The size range is NPS 1 1/2 to 72, or DN 40 to 1800. The body style can be wafer, double flanged or lug. The temperature range is -29 to 150 degrees Celsius, the pressure rating is ASME Class 150, and the shut-off class is Class VI. The body materials include ductile iron, carbon steel and stainless steel, with other materials on request. The disc can be ductile iron with nylon, stainless steel or another material, and the stem can be 17-4PH, SS410 or SS304. The body seat can be EPDM, PTFE, NBR or another elastomer.
Sealing and Wear Options
The standard seat materials cover water, air and many chemical duties, and the polyurethane sealing version is offered for wear-resistant and low-temperature scenarios. That option is aimed at clients who handle slurry or abrasive media and need a seat that lasts longer than a standard elastomer. The choice between EPDM, PTFE, NBR and polyurethane should be made from the medium, the temperature, the concentration and the cleaning regime, not from the price alone. A wrong seat can fail early even when the body and the disc are correct.
Applications and Selection
The valve is used in environmental, electricity, chemical, mining, pharmaceutical, paper and iron and steel plants. In these industries it can isolate a line, throttle a flow or act as a general shut-off valve on water, air and low-pressure process media. To select a model, send the medium, the pressure, the temperature, the pipe size, the connection standard and the required shut-off class. If the line carries abrasive slurry, state that at the enquiry so the polyurethane option and the disc material can be considered together.
Working With Detora
Detora is an industrial valve manufacturer for mining, slurry, water and gas applications. The range includes knife gate valves, slurry valves, pinch valves, concentric and double eccentric butterfly valves, damper butterfly valves and ball valves. For the BTV-TA, contact us at info@detoraindustry.com with the size, medium, pressure, temperature and connection, and our team will confirm the configuration and the next steps. We provide selection support for projects that need more than a catalogue number.
Installation and maintenance are straightforward, but the basics still decide the service life. The valve should be installed with the disc clear of the pipe bore in the open position, the flange bolts should be tightened evenly, and the actuator or handle should be accessible for operation. The seat and the disc edge should be inspected at each shutdown, and the line should be flushed before the valve is cycled if debris may be present. A valve that is used for throttling should be checked more often than one that is only opened and closed.
If you are comparing butterfly valves, ask for the body style, the size range, the pressure class, the shut-off class, the body and seat materials and the temperature range in writing, and compare them on the same basis. Our team will explain the difference between the concentric and double eccentric designs in plain terms and tell you when a requirement needs to be confirmed by the process engineer.