matiriel-accessoires/controle-de-debit/vannes-a-bille

+212 523 361 588 info@wepack-machinery.com Location

Ball valves

Flow control solutions for fluid systems

Ball valves are designed to efficiently control fluid flow in industrial systems. They derive their name from the perforated, rotating sphere they contain, allowing for rapid opening and closing with excellent sealing properties.

Performance: Low pressure losses

Materials: 304/316 stainless steel, cast iron, PTFE

Controls: Lever, electric, pneumatic

Request a quote

Main characteristics of ball valves

Low pressure losses for optimal efficiency
Easy to open and close with a quarter turn
Excellent seal for a complete closure
Compact size for installation in small spaces
Robust design for a long lifespan
Suitable for applications requiring frequent opening/closing
Reduced maintenance and reliable operation

Operating principle

Ball valves get their name from the perforated, rotating sphere they contain. This sphere is rotated 90 degrees using the valve handle to control the flow rate in the system. When the handle is aligned with the flow, the sphere's orifice is also aligned, allowing for optimal fluid circulation.

When the handle is rotated 90 degrees and becomes perpendicular to the valve, the system is closed, interrupting the flow. Ball valves are preferred for applications requiring frequent or rapid opening and closing due to their excellent sealing properties and ease of use.

Types of ball valves available

Body design: Two-piece – Three-piece – Three-way

Materials: AISI 304 - AISI 316 - Cast iron

Connection type: Threaded - Flanged - One-piece plate type

Seal type: PTFE

Control mechanism: Lever – Electric actuator – Pneumatic actuator

Operating pressure: PN16 and PN63

Maximum temperature: 180°C

Main variants:

Two/three-piece threaded ball valve (pressure up to 63 bar)
Two/three-piece flanged ball valve (pressure 16-25 bar)
Ball valve with cast iron body (pressure 10-16 bar)
Electrically or pneumatically operated valves
Ball valve for natural gas
Mini ball valve for compact applications

Industrial application areas

Agrifood

Hygiene, safety, and process efficiency are paramount in the food and beverage industry. Our easy-to-clean and hygienic stainless steel solutions ensure safe operation across a wide range of production lines, from dairy and beverages to fruit juice and beer production.

Automobile

In the automotive industry, temperature control and fluid management are essential in processes such as production lines, testing systems, and paint applications. Our compact and robust equipment ensures energy efficiency and operational continuity in these processes.

Marine

Marine applications demand equipment that can withstand extreme environmental conditions and has a long service life. Our saltwater-resistant, low-maintenance solutions reliably provide cooling, heating, and fluid control in ship systems.

HVAC

Efficiency and longevity are essential for air conditioning and domestic hot water systems. Our heating, cooling, ventilation, and domestic hot water solutions optimize energy savings and system performance in the building sector.

Petrochemical and Pharmaceutical

These industries require equipment capable of withstanding high temperatures and pressures. They also require system solutions that can handle corrosive and aggressive gases and liquids. We offer robust structures that meet these requirements, thus ensuring process safety and continuity.

Metallurgical industry

Systems subjected to high temperatures and pressures during metalworking processes require durable and long-lasting solutions. Our products, which guarantee reliability and process stability on industrial production lines, optimize productivity.

Energy

Efficiency is crucial for power generation, cogeneration, and heat recovery systems. Our high-performance solutions help reduce energy costs while ensuring the sustainable operation of these systems.

Textile

Temperature control and energy efficiency are essential in processes such as printing, dyeing, finishing, and drying. Our solutions, specifically designed for textile production processes, improve operational efficiency and optimize energy consumption.

Technical advantages of ball valves

• Quick opening/closing with a quarter turn

• Excellent sealing even after numerous cycles

• Minimal pressure losses in the open position

• Compact and lightweight design

• Low operating torque required

• Reduced maintenance and long lifespan

• Compatible with many fluids and gases

• Manual, electric or pneumatic control options

• Operating temperature up to 180°C

• Operating pressure up to 63 bar

Frequently Asked Questions

Frequently asked questions about ball valves

For general applications requiring continuous opening and closing, two-piece stainless steel ball valves offer an ideal solution thanks to their compact design and cost-effectiveness. For pipelines requiring maintenance without disassembly, the three-piece design allows for quick replacement of wear parts such as seats and PTFE packing without removing the valve body from the pipeline. This minimizes downtime and ensures a rapid return to original sealing performance.

AISI 304 stainless steel is suitable for typical process water with low corrosive loads, while AISI 316 stainless steel is preferable for chlorinated fluids, mild acidic and alkaline solutions, and environments similar to seawater. Products in this range are equipped with PTFE seats. Thanks to its broad chemical compatibility, low coefficient of friction, and heat resistance up to 180°C, PTFE ensures a durable seal. In the presence of abrasive particles, more frequent filtration or maintenance is recommended to extend the seat lifespan.

Threaded ball valves are compact, suitable for high pressures up to PN63, and easy to install on small and medium diameters. Flanged models ensure perfect alignment and sealing on larger diameters, from PN16 to PN25, and are preferred for lines requiring frequent disassembly and reassembly. One-piece wafer-type ball valves save space thanks to their sandwich design between two flanges, providing flow reduction with low pressure loss in confined spaces.

Spring-return pneumatic actuators are preferred for applications requiring a fast response and secure closure. In installations without a compressed air network, 220 V AC or 24 V DC electric actuators offer simplified installation. Truevalve's flanged and threaded ranges comply with ISO 5211 for top flanges, allowing for installation without an intermediate plate and easy integration into automation systems with position feedback, modulation boards, solenoid valves, and limit switches. A minimum safety factor of 25% between the differential process pressure and the valve opening/closing torque is essential for optimal service life.

Ball valves are essentially fast-opening and fast-closing devices that provide optimal sealing in both the fully open and closed positions. They can be used for spot flow control; however, it is important to note that mid-stroke operation under high differential pressures can lead to erosion and noise at the seat and ball. If continuous modulation is required, a butterfly valve or a control valve, combined with a calibrated orifice or V-shaped ball on a ball valve, offers a more stable and durable solution.