DescriptionFeaturesHow It WorkDocumentation

Radial Diaphragm Valve UltraPureRadial Diaphragm Valve UltraPure 

This compact, maintenance friendly radial diaphragm valve with its double-sealing system provides true aseptic conditions for sterile applications where leakage, deadlegs or cross-contamination is unacceptable. 

A true aseptic radial diaphragm valve

The Alfa Laval Radial Diaphragm Valve UltraPure is a one-piece diaphragm sealing system that delivers reliable, contaminant-free performance. Features that contribute to its superior hygienic design include:

  • Pocket-free design without dome, sump or deadleg
  • Flow optimized design with wide radius for fast Cleaning-in-Place and Sterilization-in-Place (CIP/SIP)
  • Single-seat valve technology with stem shielded behind the diaphragm so it does not travel in and out of the product chamber

Flexible aseptic valve installation

With its compact footprint and straightforward seat-valve design, the Alfa Laval Radial Diaphragm Valve UltraPure is easy to install. Unlike Weir-type valves, our radial diaphragm valve does not require a critical installation angle to eliminate dead legs. Fewer bends and weldings reduce the cost of materials, labour, and associated documentation.

Assembly is easy using a standard clamp. No tools are required for assembly, re-tightening or adjustment. Plus there are no loose screws, bolts or nuts so diaphragm replacement, when required, takes just a few seconds. This significantly reduces downtime and maintenance costs.

High flow rate, high product recovery rate

Engineered for use in biotech, pharmaceutical and aseptic food industries, the Alfa Laval Radial Diaphragm Valve UltraPure provides a high flow rate despite its compact size and small actuator. This flow-optimized design contributes to quick and easy cleaning using CIP/SIP systems.

With its self-draining design, the Alfa Laval Radial Diaphragm Valve provides full drainability with superior Kv (Cv)values. This contributes to high product recovery and increased profitability.

Standard radial diaphragm valve design

Designed for use as a shut-off valve, pass-through valve or a tank outlet valve, the Alfa Laval Radial Diaphragm Valve UltraPure can operate in manual mode or in automatic mode when equipped with a pneumatic actuator. Available in silicone and EPDM, our diaphragms meet the requirements of FDA and USP class VI classifications as well as TSE/ADI declarations. Standard welding or clamp ends are available in ø12.7 mm, ø25.4 mm and ø38 mm dimensions.

 

Construction

The RDV-UP is a single-seat valve with the stem protected behind a silicone or EPDM diaphragm. The diaphragm has a true aseptic double-sealing system that protects the product from external contamination. The diaphragm protects the stem so that the stem does not travel inside the product chamber, thereby eliminating the risk of contamination being dragged into the product chamber.

Operating principle

The Alfa Laval Radial Diaphragm Valve UltraPure (RDV-UP) range is designed either for manual operation or for automatic operation.

Manual operation

For manual operation, the RDV-UP is controlled by means of a handle. A simple turn of the handle pushes the stem downwards with the diaphragm, pressing it against the seat of the valve body and thereby closing the valve.

The handle is fitted onto the valve by means of a clamp.

Automatic operation

The RDV-UP can be controlled from remote location by means of compressed air using a pneumatic actuator. The actuator controls the axial movement of a piston, thereby opening or closing the valve depending on the actuator function.

The actuator is available in two standard versions: normally closed (NC) and air/air activated (A/A). The actuator is fitted on to the valve by means of a clamp.

 

 

DescriptionFeaturesHow It WorkDocumentation

Unique Diaphragm Valve - Premium UltraPureUnique Diaphragm Valve – Premium UltraPure

Ideal for use in sterile, ultra-hygienic processes, this reliable valve provides a higher flow rate and lower pressure drop than traditional diaphragm valves. The innovative design makes it easy to install, easy to service and helps to cut energy costs.

Diaphragm valves with superior hygiene

The Alfa Laval Unique Diaphragm Valve – Premium (DV-P) UltraPure is a durable hygienic diaphragm valve that meets the stringent demands of the biotech and pharmaceutical, personal and home care, dairy, food and beverage industries. To ensure optimal cleanability, the valve  features smooth interior surfaces free of crevices, pockets and corners as well as exterior surfaces free of threads or other hard-to-clean areas.

Optimized flow

With its innovative design, the Diaphragm Valve – Premium provides more precise flow regulation and gives double the flow rate of conventional diaphragm valve designs.

Lower diaphragm valve costs

The Diaphragm Valve – Premium minimizes total cost of ownership for diaphragm valves. It cuts energy costs because the higher flow rate and lower pressure drop enable the use of smaller feed pumps, which require less electricity to operate. Calculate the potential  savings with the Alfa Laval Energy Savings Calculator.

Installation costs are also lower than conventional diaphragm valves due to the use of smaller pumps, valves and piping. Further savings are achieved thanks to the extended lifetime of the diaphragm, which results in longer service intervals.

Safe, easy-to-service diaphragm valve

A single-thread tightening mechanism on the valve makes installation and maintenance quicker, easier and safer than conventional diaphragm valves. No cross tightening or re-tightening is required, which eliminates the risk of human error.

Defined and uniform compression also contributes to safer operation and longer diaphragm lifetime. The mechanism’s built-in click and positioning system secures correct fastening every time.

Full range of diaphragm valve automation

The Diaphragm Valve – Premium can be configured to meet automation requirements at every level – from straightforward valve position indicators to advanced pneumatic valve control units.

Construction

The Alfa Laval Unique Diaphragm Valve – Premium (DV-P) UltraPure is a hygienic diaphragm valve, which consists of a valve body, diaphragm, handle or actuator, and indication and control units. Its compact modular design enables a wide range of purpose-built configurations to meet various process requirements.

Operating principle

The DV-P is designed either for manual operation or for automatic operation.

Manual operation

The Diaphragm Valve – Premium is controlled by means of a handle.  A simple turn of the handle presses the diaphragm downwards, pushing it against the valve weir and thereby closing the valve.

Pneumatic operation

The DV-P is operated by means of compressed air using a pneumatic valve actuator. The pneumatic valve actuator controls the axial movement of a piston, opening or closing the valve depending on the actuator function.

Options

  • Mode of operation
    – Manual with choice of handle
    – Pneumatic with choice of spring-operated (NC/NO) – or air-operated actuator (A/A).
  • Diaphragm material
    – Soft elastomers: EPDM,
    – Hard elastomers: PTFE/EPDM
  • Two-way diaphragm valve body: – Clamped ends
    – Welded ends
  • Indication and control units for pneumatic actuators
    – Control units
    – Indication units (ATEX units available)
    – Stroke limiters
    – Positioners
DescriptionFeaturesHow It WorkDocumentation

Unique Diaphragm Valve UltraPureUnique Diaphragm Valve UltraPure

The Unique Diaphragm Valve UltraPure meets the requirements of most sterile and ultra-hygienic processes. These compact, lightweight valves are modular in design, which enables a wide range of purpose-built configurations.

Superior hygienic design

The Alfa Laval Unique DV-ST UltraPure range consistently delivers documented, reliable, and contaminant-free aseptic performance.

High-quality valve bodies

Low delta-ferrite content valve bodies with specified sulphur content are standard for all forged and block valves.

  • Cast bodies are made from high-precision investment casting with low delta-ferrite content.
  • 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 either machined from block or forged and welded.

The forged and welded valve bodies offer an economical lightweight alternative, which makes easy installation and efficient steam sterilization possible.

Wide range of well proven diaphragms

Alfa Laval’s broad range of well documented pharmaceutical grade diaphragms meet the requirements of FDA and USP classifications as well as TSE/ADI declarations. A high performance S2 EPDM diaphragm for continuous steam operation at temperatures up to 150 °C extends the lifetime of valves used in more demanding process environments.

Innovative actuator design

Compact and lightweight, the actuators enable easy conversion of the control function (NC-Air/Air-NO). The unique design also permits adjustments of the actuator spring pressure to optimize the sealing function and lifetime of the diaphragm. Over-closure protection for all handles used for manual operation ensures a defined closure pressure against the diaphragm and prolongs diaphragm lifetime as well. All steel parts are made of stainless steel.

Modular valve design

Create exactly the configuration you require. The Unique DV-ST UltraPure is constructed from a series of base parts that enables you to easily adapt the valve to the individual needs of a wide range of applications. SeeDocumentation and How it works.

Automation & control

        

Actuators

      

Handles 

       

Diaphragms

         

Aseptic diaphragm valves

Alfa Laval diaphragm valves are built around a weir-type system. This is available in a wide range of hard and soft compounds, extending from PTFE with either EPDM or silicone as backing plate to EPDM with a Kevlar core if extra mechanical stability is required.

Alfa Laval aseptic diaphragm valves can be operated by handles or pneumatic actuators. Such actuators can be fitted with an extensive range of control and monitoring equipment, including control units, position indicators, seal adjusters and stroke limiters.

Construction

The standard Unique DV-ST UltraPure consists of a valve body, diaphragm, handle or actuator. Optional automation and control units are available. With a full modular design, the Unique DV-ST UltraPure can be built to meet virtually any demand within the biotech and pharmaceutical industries.

Operating principle

The standard Unique DV-ST valve range is designed either for manual operation or for automatic operation.

Manual operation

For manual operation, the Unique DV-ST UltraPure is controlled by means of a handle. A simple turn of the handle will push the compressor downwards on the diaphragm, pressing the diaphragm against the weir of the valve body thereby closing the valve.

The handle can be made of full stainless steel, stainless steel composite, full composite or an epoxy version. All have a standard optical positioner and over closure protection*. As an option, the handle can incorporate a lockable function for security. The handle is fitted onto the valve by means of four screws and bolts.

*Except composite handle.

Automatic operation

The Unique DV-ST UltraPure can be controlled from remote location by means of compressed air using a pneumatic actuator. The actuator controls the axial movement of a piston, thereby opening or closing the valve depending on the actuator function.

The actuator is available in three standard versions: normally closed (NC), normally open (NO) and air/air activated (A/A). All versions have an integrated optical positioner. The actuator is fitted on to the valve by means of four screws and bolts.