Product Details Supplier Info More products

Air Handling Systems (AHS) has selected Southco to increase the energy and operational efficiencies of its HVAC enclosures by eliminating air leakage through the latching systems.

AHS manufactures bespoke air-handling equipment – primarily HVAC enclosures – for the private and public sectors, including the hospital, pharmaceutical and automotive industries.

Within the air-conditioning sector, energy efficiency and optimised operational performance have become industry requirements, particularly in service buildings such as hospitals where the demands for hygiene and comfort are high while at the same time there is an increasing emphasis on cost savings and waste reduction.

Air-conditioning users are faced with having equipment in place that complies with Part L Building Regulations and provides cost savings through energy-efficient installations.

There is an ongoing issue around air leakage from HVAC enclosures.

Air leakage implies lost energy and increased cost.

To counteract this, it is imperative to make the equipment as airtight as possible.

The current industry standard is DW 143 Class B 1000 Pascal.

When AHS pressure tested its air-handling units, it found that the major cause of air leakage was via the sealing of the enclosure doors.

Primarily, this was because the latches available at the time failed to properly engage and provide sufficient compression to seal the gasket on the thick door of the cabinets.

This is when AHS turned to Southco.

‘Southco offered the perfect solution through modifying its standard E3 Vise Action compression latch and having additional thread for allowing the engagement of the nut at the rear of the latch, thereby accommodating tight compression for up to 50mm-thick doors,’ said Wes Campbell, technical director at AHS.

Ulrike Sturman of Southco said: ‘The Vise Action design of Southco’s E3 latch series is ideal for quick, secure closure in applications where vibration, sealing and quality are paramount.

‘Its smooth operation aligns the pawl behind the frame and draws it up tight with a single continuous half-turn motion.

‘Its compression action provides consistent 6.4mm (0.25in) pull-up for environmental sealing in gasketed applications, and helps reduce or eliminate noise and rattles caused by vibration.

‘Over-centre latching resists accidental opening due to shock or vibration.

‘The original Southco Vise Action mechanism combines with numerous body and head styles, designed to suit specific installation and application requirements,’ Sturman added.

AHS applies strict air leakage tests to its equipment.

While the industry standard is Leakage Class B 1000 Pascal, AHS equipment achieves Leakage Class C 1500 Pascal as a minimum.

However, for some applications, it has reached Leakage Class D 2500 Pascal.

Subject to the same rigid test conditions, the Southco E3 compression latch has passed this same Class D rating.

Southco offers a broad range of latching solutions including locks, latches, hinges, handles and fasteners.  Southco´s distinctive human touch point solutions are important components of products that people interact with. They ensure a positive first impression while never overlooking the importance of optimum safety and secure operations.

For over 100 years, Southco has helped customers solve and overcome engineering challenges and our passion, vision and focus today is to help customers differentiate their products´ engineered touch points.

Southco is a leading global supplier with more than 2000 employees in over 20 countries, together with sales, distribution, engineering and customer service centers in over 30 countries. Southco can support you wherever you are in the world.

View full profile