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Alfa Laval regulating valves provide precision control of flow rate or pressure in hygienic processing lines. They are ideal for use in metering, blending, weighing, and filling system applications across the dairy, food, beverage, home-personal care, biotech, and pharmaceutical industries. They also ensure safe and effective operation, easy maintenance, high product quality and enhanced productivity.

Let Alfa Laval regulating valves control your hygienic and aseptic processing lines by maintaining precision control of flow rate or pressure. Designed to meet process demands for hygiene and safety, these valves monitor and adjust process parameters to boost performance whilst ensuring product quality and safety as well as process integrity.

How Do Regulating Valves Work?

Regulating valves are controlled either manually on site or from a remote location in one of the following ways:

• Adjusting a regulator on the backside of the diaphragm to set the air pressure to a fixed pressure set point
• Using pneumatic actuators controlled by a positioner
• Using a digital electropneumatic process controller

The Alfa Laval CPM Constant-Pressure Modulating Valve is a pneumatic regulating valve that maintains a constant pressure in hygienic process lines at the valve inlet or outlet. Safe, reliable and easy to clean, these regulating valves provide accurate pressure control, quickly adjusting position to maintain the pressure at pre-set values without any need for electronic control.

This pneumatic regulating valve maintains uniform inlet or outlet pressure in hygienic process lines for the dairy, food, beverage, personal care and many other industries. Typical applications include filling and bottling equipment.

Constant Pressure Valve Range

Alfa Laval offers three types of CPM valves. Modular design enables the use of different plug sizes and flow rates from 0.5 to 110 m³/h, providing great operational flexibility. Some CPM valves can also be ATEX-approved for use in potentially explosive areas.

Compliance and Aseptic Version

CPM valves meet most hygienic standards required by the food and personal care industries. The aseptic version includes a diaphragm that reacts under aseptic conditions to pressure changes, making it ideal for aseptic filling and bottling lines.

The Alfa Laval SB Pressure Exhaust Valve is a pneumatic regulating valve that automatically releases pressure in a hygienic process tank when it exceeds the set pressure. To ensure safe pressure regulations at all times, the set pressure can easily be adjusted manually or from a remote location that is connected to the central control system.

This pneumatic regulating valve is designed for use in process tanks or vessels for hygienic applications in the brewery, food, dairy, beverage and many other industries.

Safe, effective pressure regulation

Easily integrated into a central process control system, this pneumatic valve ensures safe, reliable and hygienic performance by releasing pressure in the process tank when it exceeds the set point pressure. The set point pressure can be adjusted manually or remotely.

Hygienic, easy-to-clean design

Smooth surfaces and food-grade finishes ensure superior hygiene. For fast, effective cleaning, a cleaning nozzle is supplied for inline cleaning during CIP of the vent/recovery mains. Alternatively, an optional CIP supply valve can connect directly to the valve housing.

Flexible valve mounting

The valve can be positioned on the tank top, as part of a tank top system, or elsewhere in the pipework with proper drainage from the housing.

The Alfa Laval SB Tank Pressure Regulator maintains the working pressure in the vapour space, or at the top, of a process tank during filling, processing and emptying. It generally connects directly to the gas pipe or Cleaning-in-Place (CIP) pipe that leads in to the tank top, or is incorporated into a flow panel. This ensures process safety and effectiveness as well as safeguards product integrity.

This control valve typically regulates the pressure in tanks used in the dairy, food, beverage, brewery and many other industries. The valve easily integrates with an Alfa Laval SCANDI BREW® tank top system.

Secure tank top pressure control

Maintaining the working pressure at the tank top is critical. The tank pressure regulator makes sure that the pressure in the vapour space of a process tank is always at the optimal setting. This ensures the safety and effectiveness of your processes and safeguards product integrity.

Modular hygienic design

All pressure regulator components are made of high-quality hygienic materials that meet stringent food and beverage processing standards. Modular design provides the flexibility to meet most installation requirements. Hygiene is assured through the use of a CIP adaptor to provide full cleanability.

The Alfa Laval Unique RV-P Regulating Valve is an automatic hygienic regulating valve with an electro-pneumatic actuator for use in applications that require precision control of flow as well as pressure, temperature, and tank fluid levels.

The Unique RV-P Regulating Valve is designed for precise flow control in the dairy, food, beverage, biotechnology, pharmaceutical and many other industries.

Extremely accurate valve flow regulation

Alfa Laval offers two regulating valves: Unique RV-P and an aseptic version, Unique RV-P Aseptic. These normally open or normally closed regulating valves provide highly accurate control of pressure, flow, temperature and fluid levels in tanks and in steel pipe systems.

Advanced hygienic valve design

Unique RV-P valves are ideal for high-volume sanitary process applications that require precision control. With a self-draining valve body, these valves are authorized to carry the 3-A symbol. Especially suitable for aseptic applications that require SIP (Sterilization in Place), the Unique RV-P valves are fitted with PTFE diaphragms that prevent contamination from microorganisms and particles outside the product zone.

Extreme valve accuracy

The Unique RV-P features an electro-pneumatic actuator with integrated IP converter and integrated positioner, which contribute to greater operational accuracy and reliability. The positioner for Unique RV-P valves are IP66 certified for water and dust protection.

Regulating valves with Unique SSV modularity

The pneumatic actuated regulation valves from Alfa Laval are both built on the same Unique SSV platform and thus modular with the Alfa Laval single seat valve range. The Unique RV-ST is ideal for standard regulating duties like metering, blending, weighing and filling.

If the regulating demands increases then the Unique RV-P is the optimal choice. With a high precision actuator and positioner it is ideal for regulation in applications where the highest accuracy is required. Based on modular components different plug configurations can be selected to meet specific Kv requirements. The lower sealing element is clamped on and can be replaced to match flexible Kv values.

Aseptic version

The aseptic version of Alfa Laval's Unique RV-P is called Unique RV-P Aseptic. This is an electro-pneumatic modulating valve that features an IP converter as an integrated part of the actuator. Available with a range of plug designs with different Kv values, providing different capacities.

Supplied with an aseptic diaphragm that provides hermetic sealing against intrusion from the atmosphere, ensuring full protection against the effects of micro-organisms during processing. This design allows aseptic control of pressure, flow, temperature in aseptic systems and to control the level of liquids in aseptic tanks.

Like all Alfa Laval valves, the Unique RV-P Aseptic is constructed with few moving parts housed in the actuator for added wear protection. Its compact hygienic design reduces the need for maintenance and makes disassembly, if required, quick and easy. Plus, there are no loose springs to pose any safety risk when opening the valve. The diaphragm is fully modular with the well-proven diaphragms from the Unique SSV Aseptic portfolio.

Low maintenance requirements

Like all Alfa Laval valves, the Unique RV-P is constructed with few moving parts housed in the actuator for added wear protection. Being modular with the Unique SSV portfolio it is possible to optimize maintenance routines and spare parts inventories in the plant. Its compact hygienic design reduces the need for maintenance and makes disassembly, if required, quick and easy. Plus there are no loose springs to pose any safety risk when opening the valve.

Compliance with most hygienic standards

Alfa Laval Unique RV-P valves meet most standards requested in the dairy, food and beverage, and personal care industries. Please refer to Documentation for more information.

The Alfa Laval Unique RV-ST is a versatile hygienic regulating valve that provides continuous flow and pressure control for high- and low-volume liquid-handling applications. With easy setup and an electropneumatic positioner, it meets the highest process demands for hygiene and safety across the dairy, food, brewery and many other industries.

Meet exacting demands for process hygiene, safety, and flow and pressure control with the Alfa Laval Unique RV-ST regulating valve. This versatile flow rate control valve and pressure regulation valve covers Kv values from 1 to 250 m³/hour to meet most customer requirements – even at very low flow rates. Built on the proven Unique SSV platform, the RV-ST shares standard components with the Alfa Laval Unique valve series, reducing parts inventory and costs and simplifying replacement, when required.

Hygienic corrosion-free regulating valve

The Alfa Laval Unique RV-ST is an intelligent hygienic regulating valve that safely and effectively controls process flows with Kv values between 9 and 246 m³/hour. It is designed for a wide range of fluid handling duties, such as metering, blending, weighing and filling system duties, in the food and beverage, brewery, biotech and pharmaceutical and chemicals industries. Corrosion-free features, such as tapered stainless steel stems, ensure product safety according to EHEDG (European Hygienic Engineering & Design Group) guidelines.

Advanced electro-pneumatic controller

The Unique RV-ST regulating valve comes with an advanced electro-pneumatic controller with an integrated IP converter. This offers superior control of product flow by combining different pressure drops and stroke lengths. It also features a contact-free analog position sensor, which measures the position of the valve spindle, and a standard Profibus DP-V1 or optional DeviceNet communications interface. Analogue or binary feedback is available as options.

Easy push-and-play regulating valve setup

With a push of a button, the Alfa Laval Unique RV-ST regulating valve automatically calibrates itself so that it is fully operational.

Reliable, easy to maintain

Built on the proven Unique SSV (Single Seat Valve) platform, which has an installed base of more than one million valves, the Alfa Laval Unique RV-ST UltraPure offers the same reliability, safety and ease of maintenance. Its offers protection class IP65 and IP67 for tough process environments.

A regulating valve with maximum flexibility

It uses the same few moveable components, spare parts and maintenance tools and procedures as Alfa Laval Unique SSV valves. Using the upgrade kit available, it is possible to upgrade older regulating valves with the new control unit. The new control unit also supports rebuild of the actuator from NC (Normally Closed) to NO (Normally Open) and vice versa.