Kinetics FHS and FHSL seismic control spring isolators combine high-performance vibration isolation with multidirectional seismic restraint for floor-mounted HVAC and mechanical equipment. Designed for applications where equipment must remain isolated during normal operation but restrained during an earthquake or other external event, the isolators help reduce structure-borne noise and vibration while limiting excessive vertical and lateral movement.
Kinetics Group provides technical selection, supply and project support for seismic spring isolators across the UAE, Saudi Arabia, the GCC and the wider MENA region. Typical applications include chillers, air-handling units, pumps, fans, generators and other equipment installed near noise-sensitive or operationally critical spaces.
Kinetics Noise Control Inc. Products
Seismic Spring Isolation for Mechanical Equipment
KINETICS® FHS & FHSL Seismic Control Spring Isolators reduce the transmission of noise and vibration from supported mechanical equipment into the supporting structure. They suit equipment located near critically quiet areas where vibration control matters and where the isolated equipment may also face external earthquake forces.
These seismic control spring isolators support HVAC, mechanical, and building services equipment in commercial, healthcare, education, hospitality, industrial, infrastructure, and data center projects. As a result, they help project teams address both day-to-day vibration isolation and seismic movement control within one engineered isolator assembly.
How FHS & FHSL Isolators Work
FHS/FHSL seismic control spring isolators meet the specifications for Kinetics FDS isolators. In addition, FHS isolators include a steel housing assembly that limits both lateral and vertical movement of supported equipment during an earthquake. This housing controls seismic displacement without degrading the vibration isolation of the spring during normal equipment operation.
Each isolator incorporates a steel housing that encloses a neoprene snubber. A neoprene pad, fitted in series with the spring, forms part of the load path. Equipment attaches by a bolt screwed downward through the equipment foot. Since the isolator has no protruding stud, servicing remains quick and practical because crews can remove the isolator without lifting or disturbing the supported equipment.
Seismic Restraint and Motion Control
KINETICS® FHS & FHSL isolators limit equipment motion to approximately 0.2″ (5 mm) in any direction at the isolator. The snubbing grommet system prevents direct metal-to-metal contact between the supported member and the fixed housing.
In conformance with current building code standards, the restraining system is designed to withstand a minimum 1.0 g acceleration force. For seismic loading conditions, anchorage of FHS/FHSL isolators should be designed by a professional engineer. The isolators should also be selected based on calculated anticipated forces.
When the capacity of anchorage hardware in concrete does not meet the required seismic loading, an adapter plate can allow the use of more or larger anchors. Depending on the load and seismic code, an optional steel load spreader plate may also distribute the load among concrete anchors.
Specification and Project Resources
KINETICS® FHS & FHSL Seismic Control Spring Isolators are listed as ASHRAE Type 4 Isolators and align with Division 23 HVAC specification references, including Section 230548: Vibration Isolation and Section 230549: Seismic/Wind Restraints.
Available resources include a data sheet, installation guidelines, and coil corrosion protection options. Design coordination assets include FHS Isolator 3D, PDF, and DWG files; FHS Isolator with optional oversized baseplates in PDF and DWG formats; FHS and FHSL submittal drawings; and BIM objects for project documentation.
FHS submittal drawings include FHS-1-12/3500, FHS-2-100/1975, FHS-2-2000/4500, and FHS-4-100/5800, with metric drawing options. FHSL submittal drawings include FHSL-1-12/385, FHSL-B-1-12/385, FHSL-P-1-12/385, and FHSL-2-25/416, also with metric drawing options. FHS BIM objects include FHS-1-35/3500, FHS-2-100/1975, FHS-2-2000/4500, and FHS-4-100/5800. FHSL BIM objects include FHSL-1-35/370 and FHSL-2-25/416.
The product also carries California Pre-Approval Number R-0433. A listed project focus for this isolator is The Universities at Shady Grove Biomedical Sciences and Engineering Building.
RESOURCES
Coil Corrosion Protection Options
SPECIFICATION DETAILS
DIVISION 23 HVAC
Section 230548: Vibration Isolation
Section 230549: Seismic/Wind Restraints
ASHRAE Type 4 Isolator
FHS ISOLATOR
FHS ISOLATOR W/ OPTIONAL OVERSIZED BASEPLATES
FHS SUBMITTAL DRAWINGS
FHSL SUBMITTAL DRAWINGS
FHS BIM OBJECTS
FHSL BIM OBJECTS
