AW & AWH Series Spring-Flex Isolators are designed to isolate low frequency vibrations in air handling units, fans, chillers, and other HVAC equipment. The AW & AWH models are recommended for use directly under most HVAC equipment and in conjunction with structural steel bases and concrete inertia blocks.

AW Spring-Flex Isolators are adjustable, free-standing and laterally stable spring mountings with a combination leveling and equipment fastening bolt. The spring is welded to the spring mounting base plate and compression plate, ensuring lateral stability.  A non-skid elastomeric pad is bonded to the base plate, eliminating the need for bolting.  The AWH option supplies two holes in the rectangular base plate for bolting to the structure. AW models are available in deflections up to 5 inches (127 mm).

Features & Benefits

  • Loads from 60-3,680 lbs. with static deflections up to 5” provide flexibility over a wide range of applications
  • Free-standing spring isolators offer a 1:1 lateral stability ratio
  • Built-in leveling device offers simplified installation
  • Weldless construction prevents excessive stress at the weld areas that could result in spring faults
  • Color-coded springs provide easy identification of Spring-Flex Isolators for installation and inspection


  • Air handling units
  • Fans
  • Pumps
  • Chillers
  • Air compressors
  • HVAC equipment




The engineers we employ hold the highest industry-recognized credentials in structural analysis, elastomer development and system dynamics.


We are the first ISO accredited PCA ISO-17065, third-party certification body for special seismic certification of non-structural building components and their mounting configurations by the ICC’s International Accreditation Service.

Test & Measurement

We are the only ISO 17025:2005 Accredited Seismic Simulation Test Laboratory with a triaxial shake table owned and operated by California licensed Structural engineers.

Testing Services Update
DCL now offers Nuclear Qualification and Testing services.

In partnership with Greenberry Industrial, we now offer testing services that meet the requirements of ASME NQA-1.

Call for more information.