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Stainless steel mixers

6th July 2016

Posted By Paul Boughton


The SSi (Stainless Steel In-line) and SSO (Stainless Steel Offset) mixers from SPX FLOW Lightnin’s SanStar Series provide long life, reliable operation and reduced power loss through the use of high-efficiency gearing. The range offers flexible options to match individual application needs and units are specifically designed to meet the high standards required by pharmaceutical, biotechnology and food and beverage industries.

A Lightnin Quality Assurance Documentation (QAD) package to demonstrate current Good Manufacturing Practice (cGMP) can be provided with the mixers.

Constructed with stainless steel housings and motors, Lightnin SanStar mixers comply with the latest ASME BPE guidelines, have CE certification and, if needed, can be engineered for ATEX requirements. They are suitable for a wide range of mixing applications in areas including buffer and media preparation, fermenters, bioreactors, product recovery and bulk pharmaceutical processing. Their hygienic design offers either USP Class VI or FDA GRAS elastomers and seal faces, making them an excellent choice for food & beverage mixing processes.

SanStar mixers are highly adaptable to installation requirements. They have open tank, lip seal and mechanical seal mounting options with a choice of ANSI, DIN or sanitary flanges. The units are further designed to accommodate longer shaft lengths to fit mix-tanks without the need for any in-tank bottom support. This makes the units easier to maintain and operate without the possibility of damage to the mixer or tank. Various motor options plus a full spectrum of impeller types are available to meet a wide variety of tank sizes.

The mixers offer users power ranges from 0.18kW (1/4HP) to 1.5kW (2HP) with speeds from 84RPM to 1800RPM. They give significant operational advantages by performing at high efficiency over variable speeds without speed block out ranges (on gear drive units); ensuring processes can operate at optimum speeds to meet processing needs.

The SanStar SSi is based on Lightnin’s vast experience of building in-line gearboxes and designing sanitary products. It can have shaft lengths of up to 3.454 m (136”) and offers a smaller footprint than many alternate technologies, making it a good choice where space is limited. The flexibility of its design means this powerful unit can accommodate mix tanks ranging from 100 litres (26 gals) to 2000 litres (528 gals).

The offset gearbox on the SanStar SSO provides a mixer that combines sanitary design and easy maintenance with the ability to use exceptionally long shaft lengths of up to 4.572 m (180"), making it ideal for larger tanks. The wide variety of options available on this unit makes it suitable for use with mix tanks ranging in volume from 400 liters (105 gals) through to 20,000 liters (5,280 gals).

All of the SanStar range of mixers have polished 300 series stainless steel housings and are designed to be easily cleaned, provide superior corrosion protection and are suitable for use in clean-in-place (CIP) and sterilise-in-place (SIP) operations. Their single, dry-running mechanical seals are available with or without a sanitary purge gland.







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