The Neles T5 series is a top-entry trunnion-mounted rotary ball valve designed for demanding heavy-duty applications such as anti-surge and blowdown control. The valve is available with flanged or welded connections and features a backlash-free Stemball connection. Its operating temperature range covers -200 to +600 °C. Q-trim or Q2-trim technology internals are available for noise reduction and cavitation prevention. The product complies with ISO 15848 fugitive emission requirements and API 607 fire-safe certification, making it suitable for compressor anti-surge control loops, heavy-duty process control, and blowdown service in chemical, petrochemical, and refining facilities.
Neles T5 Series Ball Valve
Neles
Neles T5 Series Heavy-Duty Rotary Ball Valve (Anti-Surge and Blowdown Control)
Top-entry trunnion-mounted rotary ball valve for anti-surge and blowdown control, with optional Q-trim internals.
- Category
- Ball Valves
- Size range
- DN 25 - 400 / 1" - 16"
- Pressure class
- PN 25 - 100 / ASME 150 - 600
Specifications
- Valve design
- Top-entry trunnion-mounted rotary ball valve
- Connection type
- Flanged or welded ends
- Size range
- DN 25 - 400 / 1" - 16"
- Pressure class
- PN 25 - 100 / ASME 150 - 600
- Operating temperature range
- -200 to +600 °C / -320 to +1110 °F
- Face-to-face dimension standard
- IEC 534-3 and ANSI/ISA S75.03
- Seat type
- Metal-to-metal or soft seat
- Noise reduction and anti-cavitation internals
- Optional Neles Q-trim technology internals
- Gas noise reduction internals
- Optional Neles Q2-trim technology internals
- Stem-to-ball connection
- Backlash-free Stemball connection
- Emission requirements
- Compliant with ISO 15848
- Fire-safe certification
- API 607
Application scenarios
Compressor Anti-Surge Control Loops
Used as a control valve in compressor anti-surge control loops in chemical, petrochemical, or refinery facilities for demanding heavy-duty control applications.
Heavy-Duty Process Control in Refinery Facilities
Used for heavy-duty process control in refinery facilities as a control valve for continuous regulation of process media flow.
Blowdown Service in Chemical, Petrochemical, and Refinery Facilities
Used for blowdown service in chemical, petrochemical, and refinery facilities to provide heavy-duty flow control during blowdown operations.
Selection points
Top-entry trunnion-mounted design
Features a top-entry trunnion-mounted rotary ball valve design.
Backlash-free Stemball stem-to-ball connection
Features a backlash-free Stemball stem-to-ball connection.
Optional anti-cavitation and noise-reduction internals
Optional Neles Q-trim anti-cavitation and noise-reduction internals and Neles Q2-trim gas noise-reduction internals are available.
Wide operating temperature range
Operating temperature range: -200 to +600 °C.
Low-fugitive-emission and fire-safe certification
Emission requirements comply with ISO 15848, and the valve has API 607 fire-safe certification.
Installation notes
Verify operating conditions against the actual seat and internals configuration
The T5 series can be configured with metal-to-metal or soft seats and with optional Q-trim or Q2-trim internals. Before installation and commissioning, verify that the seat and internals configuration matches the actual temperature, differential pressure, medium, and control service to help prevent seal failure, cavitation, inadequate noise control, and seat or ball wear.
Provide sufficient overhead access for the top-entry design
The T5 series uses a top-entry trunnion-mounted design that facilitates maintenance. During site layout, provide sufficient space above the valve for removal, installation, and maintenance, and ensure that piping, platforms, insulation, or other accessories do not obstruct top access.
FAQ
What demanding control applications are Neles T5 Series ball valves suitable for?
Neles T5 Series top-entry rotary ball valves are designed for heavy-duty control requirements in the chemical, petrochemical, and refining industries. They can be used for crude oil, hot heavy oil, LPG, LNG, natural gas, hydrocarbon vapor, high-pressure industrial gases, blowdown service, geothermal water, and steam. Applications also include anti-surge service and other duties requiring high control performance.
How does the Stemball design of the T5 Series affect modulating control?
The series uses a trunnion-mounted Stemball design with a backlash-free stem-to-ball connection, helping improve response consistency during control operation. Combined with robust, durable heavy-duty trunnion bearings, it is suitable for demanding heavy-duty control applications.
How should T5 Series internals be selected for gas, cavitation, or high-noise applications?
For control, cavitation prevention, and noise-reduction requirements, internals featuring Neles Q-trim technology can be selected. For gas applications, the Neles Q2-trim option can be selected to provide greater gas-noise attenuation. The specific configuration must be confirmed according to the actual model and application conditions.
What seat types, connection styles, and size ranges are available for the Neles T5 Series?
The T5 Series can be configured with metal-to-metal or soft seats according to the application and is available with flanged or welded ends. The size range is DN 25 to 400 (1 to 16 inches), the pressure class is PN 25 to 100 or ASME 150 to 600, and the applicable temperature range is -200 to +600 °C.
What features does the T5 Series offer for installation, maintenance, and safety compliance?
The series uses a top-entry design that facilitates welded-end connections and provides easy maintenance and installation. Its face-to-face dimensions comply with IEC 534-3 and ANSI/ISA S75.03, its emissions comply with ISO 15848, and it has API 607 fire-safe certification.