SMP
The Alfa Laval SMP Mixproof Valves are double-seal valves for handling process flows through matrix piping systems. The SMP mixproof valves are simplified, standardized and cost-effective alternatives to Unique mixproof valve range. The top-loaded Alfa Laval mixproof valve is designed for quick leakage detection to maximize product safety and low maintenance due to few moving parts. It is often used in Cleaning-in-Place (CIP) lines and can also be used in other systems handling products
Experience the benefits of SMP double seal valve
- Versatile, modular design meets most aseptic application requirements
- Cost effective
- Easy to maintain
Alfa Laval offers two double-seal mixproof valves: The Alfa Laval SMP-BC and the aseptic version, SMP-BCA. The Alfa Laval mixproof valve SMP is a self draining valve that enables the flow of two different media through the same valve simultaneously without any risk of cross-contamination. This increases operating efficiencies and significantly reduces operating costs. The SMP valves meet most standards requested in the dairy, food and beverage, and personal care industries
How does the Alfa Laval mixproof valve SMP work?
Construction
The construction of the Alfa Laval SMP mixproof valve range varies, depending on the valve model (SMP-BC and SMP-BCA).
The SMP-BC mixproof valve consists of an actuator, bonnet, plug and valve bodies. Three versions are available: a shut-off valve with one valve body, a shut-off valve with two valve bodies, and a changeover valve with three valve bodies. Clamp rings and a plug clip system secure the valve bodies to the actuator. The clamp ring enables you to turn the valve in any direction.
The SMP-BCA mixproof valve consists of the same valve components as the SMP-BC, but is fitted with a PTFE/EPDM diaphragm designed to prevent contamination from external sources and to withstand high temperature. This makes the SMP-BCA a sanitary valve and ideal for use under aseptic conditions.
Operating principles
The Alfa Laval SMP mixproof valves are controlled from remote location by means of compressed air. The SMP-BC and SMP-BCA mixproof valves have different operating principles, which are described below.
SMP-BC mixproof valve
The Alfa Laval mixproof valve SMP-BC is fitted with two small pneumatic normally open (NO) valves, a detecting valve and a CIP-valve.
The self draining valve has a valve plug that has two seals, which form an atmospheric leakage chamber. Any product leakage is discharged through the detecting valve. The leakage chamber may be cleaned by supplying CIP into the detecting valve. The SMP-BC is insensitive to water hammer in the product line above the plug.
For changeover valves, a single seal plug separates the lower product lines.
SMP-BCA aseptic mixproof valve
The Alfa Laval mixproof valve SMP-BCA aseptic is a normally closed (NC) valve with a proven PTFE/EPDM diaphragm. What makes the SMP-BCA a sanitary valve is the special designed aseptic diaphragm hermetically seals against intrusion from the atmosphere and ensures full protection against the effects of microorganisms. It also prevents product build-up on the product contact surface.
The valve plug has two seals, which form an atmospheric leakage chamber. Any product leakage is discharged through the detecting valve. The leakage chamber may be cleaned by supplying CIP into the detecting valve.
Two small pneumatic normally open (NO) valves enable a sterile barrier to be established in the leakage chamber through the continuous application of steam. The chamber must be clean and sterile when the main valve is closed.
For changeover valves, a single seal plug separates the lower product lines but does not require the use of a sterile barrier in the leakage chamber.
SMP-BC shut-off valve SMP-BCA Aseptic shut-off valve
Options
SMP-BC mixproof valve
- Fittings in accordance with required standard
- Valve sensing and control devices, including ThinkTop V50 and V70
- Actuator with strong spring
- Larger actuator for valve sizes 38-51 mm/DN 40-50
- CIP installation kits
- Various valve body combinations
- Surface roughness, product wetted parts: Ra ≤ 0.8 µm
- Product wetted seals of NBR or FPM
- Service tool for actuator
- Tool for plug seals (Necessary for changing the seals)
SMP-BCA mixproof valve
- Fittings in accordance with required standard
- Valve sensing and control devices, including ThinkTop V50 and V70
- Larger actuator for valve sizes 38-51 mm/DN 40-50
- CIP installation kits
- Various valve body combinations
- Surface roughness, product wetted parts: Ra ≤ 0.8 µm
- Product wetted seals of NBR and PTFE or FPM and PTFE
- Service tool for actuator
- Tool for plug seals (Necessary for changing the seals)
Close at Hand catalogue
The hygienic equipment product catalogue "Close at hand" includes product leaflets, links to animations, brochures and lists for ordering purposes.
CAD portal
The Alfa Laval CAD portal is an essential platform for downloading detailed product information, 2D drawings and 3D product models.
Service
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 Centre
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 Centre, 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.
360° Service and maintenance videos
Alfa Laval SMP-BC mixproof valves - replace seals
Alfa Laval Service Kits
Find the products you are looking for
The digital Alfa Laval Product Catalogue makes it easy to find and select the products you need. When you request a quote, the catalogue will list Alfa Laval´s partners in your region - and you can send your request directly.
Save water with ThinkTop
Do something good for the environment and save up to 95% in CIP liquid when cleaning your valves. Innovations like ThinkTop sensing and control units make more efficient use of resources while safeguarding process hygiene. Add ThinkTop to your valves to optimize your processes.
Part of a broad valve range
Alfa Laval offers a comprehensive range of valves intended for hygienic applications in the dairy, food, beverage,home care, personal care, biotechnology and pharmaceuticals.
Subscribe near 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.