Pure-Fuse diaphragm technology incorporates a one-piece design that eliminates product-trap areas between the outer piston and diaphragm that can harbor bacteria, a critical consideration for hygienic applications. This patented design also provides an unbroken fluid-contact surface for CIP capability and reduced contamination risks. Pure-Fuse combines food-grade plastics and elastomers with a stainless-steel core using no adhesives or nylon fabric that can contaminate process fluids in the event of a breech. In addition, by eliminating the outer piston Pure-Fuse diaphragms experience reduced abrasion, which results in longer diaphragm life.
Posts Tagged ‘double-diaphragm’
Almatec, manufacturer of sanitary air-operated double-diaphragm (AODD) pumps, is pleased to announce that its plastic and metal AODD pumps are now 1935/2004/EC-compliant.
1935/2004/EC is the common name for European Commission Regulation No. 1935/2004, which is the European safety standard for materials that come into contact with food during the production process. With this certification, Almatec AODD pumps are now available for use in a wide variety of sanitary and hygienic applications that involve food contact.
Wilden was founded in 1955 by Jim Wilden when he revolutionized the pumping industry by inventing the air-operated double-diaphragm (AODD) pump technology. Since that time, Wilden is providing innovative solutions for a wide range of applications in the energy, chemical, process and water & wastewater industries. Wilden became part of PSG in 2008, and now spans more than 160 countries with more than 180 distributors worldwide.
The two new 1-1/2-inch (38 mm) high pressure bolted metal AODD pump models feature redesigned liquid paths to reduce internal friction to maximize output and efficiency. They are shear sensitive, dry-run capable, externally serviceable, completely submersible and comply with all CE and Atex requirements. These pumps also come equipped with the Pro-Flo Shift air distribution system.
The two new high pressure pump models are
- the HS400S, which is available in aluminum, and
- the HS430S, which comes in stainless steel.
Flotronic Pumps Limited, the UK-based specialist manufacturer of air-operated double diaphragm pumps, having already secured 3-A Sanitary Standards, Inc (3-A SSI) approval for their ‘H’ series pump, have now achieved the European Hygienic Engineering & Design Group (EHEDG) accreditation for their new ‘E’ Series pump.
The ‘E’ Series pump has been specifically designed for the Food and Beverage industry and other processes where product contamination must be avoided. The pump’s features include Flotronic’s established and unique ‘One-Nut’ pump design which allows swift diaphragm access without disconnecting process pipework. The internal surfaces of the ‘E’ Series pump can be effectively ‘cleaned in place’ or, alternatively, easy dismantling can be carried out for cleaning and inspection. Cleaning is aided by the provision of polished wetted surfaces to 0.8μm Ra maximum and an electro-polished overall finish. Cleanability is also assisted by the incorporation of a support stand whereby the pump can be inverted for full draining.
- USP Class VI,
- 1935/2004/EC and
- FDA CFR 21.177
requirements for use in a wide variety of hygienic applications. These metal AODD pump models utilize the energy-efficient Pro-Flo Air Distribution System (ADS).
Since its foundation in 1855, Crane has been “a symbol of manufacturing excellence, expanding alongside the global industrial revolution and shaping the growth of industry worldwide”, according to a company’s statement. “Crane ChemPharma & Energy, the consolidation of former businesses Crane ChemPharma Flow Solutions and Crane Energy Flow Solutions, is proud to be a part of the company’s illustrious history, delivering solutions to the fluid handling challenges faced by the industry’s most demanding applications.”
The new Almatec air-operated diaphragm pump series CXM – shown at Achema 2015 – consists of four sizes and can be equipped with seven different product connections. This is possible thanks to the modular design of the pumps. For each pump of the sizes 20, 50 and 130 two center blocks are available with different connection types and sizes.
This wide range of product connections allows a precise adjustment of the pump to the specific application. This is reinforced by the alternative choice between a ball and cylinder valve system, which can also be converted to each other. Ball valves are ideal for liquids containing particles, cylinder valves for superior suction lift.
The new 76 mm (3”) Full-Stroke Integral Piston Diaphragm (FSIPD) is made for use in Wilden’s Saniflo FDA pumps, as well as its Original, Advanced and Advanced FIT series of air-operated double-diaphragm (AODD) pumps. These diaphragms are well suited for hygienic applications because they are constructed of food-grade Santoprene™, and the integral piston is completely encapsulated within the TPE material, meaning there is no outer piston that can trap fluid and particles.
The result is a durable, highly cleanable diaphragm assembly that features a large integral piston and a full-stroke shaft that enables it to maintain the same stroke length as conventional Wilden diaphragms. The diaphragm’s full-stroke design increases product displacement per stroke, which translates into improved suction lift, greater flow rates and higher efficiencies than experienced when using pumps that operate with reduced stroke diaphragms.
The new Wilden air-operated double-diaphragm (AODD) pump series 430 and 830 Advanced FIT is produced of 316 stainless steel for higher corrosion resistance in aggressive chemical applications. These sieries have been specifically designed to be direct replacements for existing Wilden 38 mm (1-1/2”) and 51 mm (2”) Advanced pump installations.
- bolt-to-bolt and