We offer a wide range of well-proven diaphragm valves. They are built on a modular design and can be configured to meet to any specific requirement. Alfa Laval diaphragm valves are ideal for use in sterile and ultra-hygienic processes and supplied with a comprehensive documentation package, Alfa Laval Q-doc, providing full transparency of sourcing, production and supply chains, and traceability of all changes in material, manufacturing procedures or spare parts.
High-quality valve bodies and wide range of proven diaphragms
- Reliable, long life diaphragm – available in high performance EPDM for continuous steam operation at temperatures up to 150 °C
- Reduced risk of contamination - fully documented, made for aseptic operation with standard low-ferrite valve body (option for high alloy solution)
- Simple and reliable stainless steel actuator with 5-year warranty – one-type-fits-all design makes selection safe, fast and easy
- Hygienic design – high-grade valve bodies and low Ra surface finishes
- Easy installation/validation/qualification and backed by Alfa Laval Q-doc comprehensive documentation package and service partner network
The actuator operates at up to 10 and 6 bar depending on diaphragm material (EPDM and PTFE/EPDM: 10 bar; TFM/PTFE: 6 bar). Autoclavability and chemical resistance ensure long service life and uptime. Over-closure protection (manual version) also helps prolong diaphragm life. All steel parts are made of stainless steel or composite material depending on handle type. There is also a range of easily mounted indication and control units.
Unique DV-ST UltraPure valve technology
Service and reliability
Valve bodies have low delta-ferrite content and defined sulphur content as standard in all forged and block valves. Two-way valves, including the ferrules for clamp-end bodies, are made from a single piece of metal. T- and tank-outlet valves are available machined from block in a multitude of configurations and materials.
The aseptic diaphragm valves are built around a weir-type design and is available with hard or soft compounds from PTFE with EPDM as backing to a pure EPDM diaphragm. They can be operated manually or with pneumatic actuators that come with a range of sensing and control equipment, including control units, position indicators, stroke limiters and valve positioners.
The valves come with Alfa Laval Q-doc, a comprehensive documentation package that provides full transparency of the entire supply chain. This helps smooth purchasing and installation procedures and facilitates qualification, validation and change control procedures. Based on GDP, Q-doc covers every aspect of biotech and pharmaceutical equipment supply and provides customers with transparent and well-documented quality assurance of the sourced equipment.
Documents