Variable Effort Spring Supports

A variable effort spring support is a resilient device which absorbs/accommodates the vertical displacement of a piping system. The variable support is recommended for relatively small displacement (up to about 75mm).

Variable effort spring supports function on the principle of Hooke’s Law, which states that the force required to compress a spring is directly proportional to the compression of the spring. Therefore, the compression (i.e. the supporting effort) of the spring within the variable effort support changes in proportion to the forces exerted on it by the pipework as it rises/falls due to thermal expansion/contraction. This enables the spring support to safely accommodate and balance the vertical displacement thus avoiding excessive pipework stresses.

CPA offers two categories of variable effort spring supports; ‘AV’ and ‘LV’. Please click on the images below to view CPA’s full range of AV and LV supports and their unique benefits over competitor products: