CPM
La válvula moduladora de presión constante CPM de Alfa Laval es una válvula reguladora neumática que mantiene una presión constante en las líneas de proceso higiénicas, tanto en la entrada como en la salida de la válvula. Seguras, fiables y fáciles de limpiar, estas válvulas reguladoras neumáticas proporcionan un control preciso de la presión, ajustando rápidamente su posición para mantenerla en los valores preestablecidos sin necesidad de control electrónico.
Válvula reguladora que garantiza una presión de entrada o salida precisa en líneas de proceso higiénicas
- Control de presión seguro y eficaz
- Diseño autodrenante
- Excelente facilidad de limpieza de la válvula
- Fácil de instalar, sencillo de manejar
- Alto nivel de higiene
Esta válvula reguladora neumática mantiene una presión uniforme de entrada o salida en las líneas de proceso higiénicas de los sectores lácteo, alimentario, de bebidas, de cuidado personal y muchos otros. Entre sus aplicaciones típicas se incluyen los equipos de llenado y embotellado.
How does the CPM valve works?
Construction
There are two different types of construction for Alfa Laval Constant Pressure Modulating valves.
The CPMI-2 and CPMO-2 valves consist of a valve body with valve seat, cover, a valve plug with a special diaphragm and a clamp. The diaphragm consists of two flexible EPDM diaphragms supported by 12 stainless steel sectors in between them. The cover and the valve body are clamped together. The valve body and the seat are welded together.
The CPM-I-D60 consists of a CPMI-2 valve with additional piping.
Operating principle
The CPMI-2, CPMO-2 and CPM-I-D60 valves are controlled remotely by means of compressed air. The valves operate without a transmitter in the product line and only require a pressure-regulating valve for the compressed air and a pressure gauge in the product line.
Where modulating back pressure is required (i.e., to maintain a fixed flow in and out of the CPM valve), the air supply to the valve can be provided by an I/P converter (typically 3-15 psi) and a booster valve. The product pressure dictates the pressure ratio of the booster valve.
A diaphragm reacts immediately to any alteration of the product pressure and changes position so that the preset pressure is maintained.
Inlet side: The Constant Pressure Modulating Inlet (CPMI-2) valves and the Constant Pressure Modulating Inlet D60 (CPM-I-D60) valves maintain constant pressure in the process line at the inlet side of the valve. CPMI-2 and CPM-I-D60 open when product pressure increases and close when product pressure decreases. These are often installed downstream from separators and heat exchangers, and may also be used as overflow valves.
Outlet side: The Constant Pressure Modulating Outlet (CPMO-2) valves maintain constant pressure in the process line at the outlet side of the valve. CPMO-2 closes when product pressure increases and opens when product pressure decreases. It is often installed upstream from pasteurizers, separators and filler systems of filtration units.
Safe, effective pressure control
Alfa Laval Constant Pressure Modulating (CPM) valves are pneumatic regulating valves that maintain a constant inlet or outlet pressure in hygienic process lines. Thanks to a quick response diaphragm, these compact valves immediately react to any change in product pressure, adjusting position to keep the pressure at preset values.
Excellent valve cleanability
CPM valves feature a self-draining design and crevice-free, bowl-shaped valve body with welded valve seat to enable thorough cleaning, thus eliminating potential entrapment areas. The unique diaphragm with PTFE on the lower diaphragm also contributes to excellent cleanability.
Constant pressure valve range
Alfa Laval offers three types of CPM valves. Modular design enables the use of different plug sizes and different flow rates between 0.5 and 110 m3/h provide great operational flexibility.
Upon request, some CPM valves can be provided as ATEX-approved valves (group 2 category 3 D&G applications) for use in potentially explosive areas.
For more information, please refer to Documentation.
Aseptic version
Designed to maintain a constant pressure at the valve inlet or outlet, using different plug sizes and different Kv values.
The diaphragm in the constant pressure valve enables it under aseptic conditions to react effectively to any changes in product pressure by shifting position against a constant air pressure.
The CPM valve is often used upstream of aseptic filling and bottling machines.
Options
- Fittings in accordance with required standard
- Air pressure regulating valve kit, 0-8 bar
- Diaphragm in PTFE covered in EPDM or PTFE
- Seals in NBR, FPM or PTFE
- Air throttling valve for adjustment of regulating speed for the CPM-2 valve
- Booster for product pressure exceeding the available air pressure (Product pressure = 1.8 x air pressure)
- 3A version available on request for CPMI-2 and CPMO-2 valves only
Catálogo «A mano»
El catálogo de productos de higiene «A mano» incluye folletos de productos, enlaces a animaciones, catálogos y listas para realizar pedidos.
CAD portal
The Alfa Laval CAD portal is an essential platform for downloading detailed product information, 2D drawings and 3D product models.
Servicios
Our dedicated Global Service Network supports you with parts and expertise, wherever you are, whenever you need it. By ensuring greater uptime, availability and optimization, we help bring you peace of mind, and maximize your return on investment. We can work with you to integrate our services into an Alfa Laval Service Agreement for predictable and worry-free operations.
Learn more about our service offer Troubleshooting
Serial number search Certification
Please contact us with any queries or questions.
Visit the Application & Innovation Center
Do you want to identify the optimal equipment for the job and discover tangible savings before deciding on upgrades? In the Alfa Laval Application & Innovation Center, you can do just that.
Optimize™ by Alfa Laval
Optimize™ by Alfa Laval boosts your existing processes and enables up to 90% savings on water, energy and chemicals with only small and no-risk investments.
You might also be interested in...
Ten top tips - Valves
Here are some tips and service videos to show how you keep your hygienic valves in tip top condition
Subscribe to our newsletter
Stay updated on important sustainability issues and opportunities in your industry and processes!
Animations
Visit the animations site and take a look inside a product to see and understand how it works.
Pensando en el futuro, artículos técnicos
Pensando en el futuro – Artículos técnicos y documentos especializados sobre equipos higiénicos