VMC Group Pump Concrete Inertia Base Horizontal Split Case Pumps consist of structural steel channel perimeter frame, reinforced steel, equipment mounting templates with anchor bolts and seismic spring isolators with height saving brackets or recessed spring pockets upon request. Spring deflections of 1" and 2" are available. Inertia base thicknesses of 6" - 12" are available.

When Pump Concrete Inertia Base Horizontal Split Case Pumps are filled with concrete, they become an inertia base and provide an effective means to isolate vibration and limit the motion of horizontal split case pumps.

Pump Concrete Inertia Base Horizontal Split Case Pumps can be t-shaped or rectangular in size and are engineered to support the base elbow of the suction and discharge piping of a horizontal split case pump. The seismic isolator housings are offset with the perimeter of the base. The isolator housings are identical in height within each series and come with easily accessible bolt holes for simplified installation. An elastomeric acoustical cup eliminates high frequency vibration, while color-coded springs permit ease of identification of load capacity. Spring housings have internal adjustments for use in most seismic and wind applications. Their rugged steel housing is designed to handle high wind and high seismic forces up to 2.0g.

Features & Benefits

  • Reinforced steel frame
  • Multiple deflections available
  • Various thicknesses available
  • T-shaped for ease of installation in tight spaces Seismic capacity up to 2.0g
  • International Building Code® (IBC) compliant


  • Pumps




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.