Constant Spring Supports and Hangers

Overview

Constant springs are used to support piping whose movements and/or loading conditions cause too great a variability or too high of a loading condition for a variable spring. 

The geometric design of the constant support provides a mathematically constant amount of force exerted throughout the entire range of travel. The force is made constant by a counterbalancing spring assembly. 

For an upgraded alternative to the traditional constant spring supports, see our Rilco Cam Roller Constants.

Constant Catalog 

     View our Variable & Constant Spring Catalog for complete specs.

RCS-80V Vertical Constant Chart

Drawing Rilco Type/Grinnell Equivalent Description
RCS-80V "Type A" A/A The Rilco RCS-80V "Type A" is specially fabricated for mounting on a supporting member by means of attaching a rod into the tapped hole in the constant supports' top cap.
RCS-80V "Type B" B/B The Rilco RCS-80V "Type B" is manufactured with one lug to accommodate attachment to building structure and allow for the use of various types of attachments.
RCS-80V "Type C" C/C The Rilco RCS-80V "Type C" is manufactured using two (2) lugs to accommodate attachment to the building structure and allowing for the use of various types of attachments.
RCS-80V "Type D" D/D The Rilco RCS-80V "Type D" is designed to lay on top of the beams or structural steel rather than attaching to the structures like the other "Constant Supports".
RCS-80V "Type E" E/E The Rilco RCS-80V "Type E" is the same as the RCS-80V "Type D" except that "Type E" is designed with two (2) brackets that comprise its frame thereby allowing it to rest on the top flange of the structural member.
RCS-80V "Type G" G/G The RCS-80V "Type G" is manufactured using opposing constants and a pair of channels welded back-to-back, to form a trapeze assembly.
This Rilco system is designed for use when a pipe is not to be centered on the constant support so that one spring of the trapeze carries a heavier load than the other.
Constant Spring Hangers and Supports.pdf

RCS-81H Horizontal Constant Chart

Drawing Rilco Type/Grinnell Equivalent Description
RCS-81H "Type A" A/A The Rilco RCS-81H "Type A" is specially designed for mounting on a supporting member by means of attaching two rods into the tapped holes in the constant supportÕs top cap.
RCS-81H "Type B" B/B The Rilco RCS-81H "Type B" is manufactured with two lugs to accommodate attachment to the building structure and allowing for the use of various types of attachments.
RCS-81H "Type C" C/C The Rilco RCS-81H "Type C" is manufactured using two (2) lugs to accommodate attachment to the building structure and allowing for the use of various types of attachments.
RCS-81H "Type D" D/D The Rilco RCS-81H "Type D" is designed to be attached directly under that steel support member.
RCS-81H "Type E" E/E The Rilco RCS-81H "Type E" is similar to the RCS-81H "Type D" except that "Type E" is designed with two (2) brackets welded to the support casing forming a frame which allows the unit to be attached to the top of the structural support.
RCS-81H "Type F" F/F The Rilco RCS-81H "Type F Upthrust" is specifically designed to support pipes or equipment from below and is supplied with a base to anchor it to the floor.
Constant Spring Hangers and Supports.pdf

Design Features of Rilco Constant Supports & Hangers

  • High load and travel capabilities
  • Each hanger is calibrated independently to the client’s specific load prior to shipment
  • Load is adjustable +/- 10% from the “as shipped” load
  • Spring covers which prevent foreign objects from restricing the action of the coil spring & provide a clean, functional appearance
  • Stainless steel shafts to ensure each unit will not seize due to corrosion
  • Upper and lower limit built-in travel stops that restrict travel and prevent damage to the supports

Support Types

  • Horizontal
  • Upthrust
  • Vertical