Variable Spring Supports

Variables use coiled springs to support a load and allow movement. The resistance of the coil to a load changes during compression, which is why these devices are called “variables”. We offer a variety of different designs of variable spring pipe supports.

Variable Spring Supports Details

General Information
Load And Travel
Types & Sizes
Fig. PTP-1-Types A, B, & C-Short Variable Springs
Fig. PTP-1-Types D, E, & F-Short Variable Springs
Fig. PTP-1-Type G-Short Variable Springs
Fig. PTP-2-Types A, B, & C-Standard Variable Springs
Fig. PTP-2-Types D, E, & F-Standard Variable Springs
Fig. PTP-2-Type G-Standard Variable Springs
Fig. PTP-4-Types A, B, & C-Double Variable Springs
Fig. PTP-4-Types D, E, & F-Double Variable Springs
Fig. PTP-4-Type G-Double Variable Springs
Fig. PTP-6-Types A, B, & C-Triple Variable Springs
Fig. PTP-6-Types D, E, & F – Triple Variable Springs
Fig. PTP-6-Type G-Triple Variable Springs
Fig. PTP-8-Types A, B, & C-Quadruple Variable Springs
Fig. PTP-8-Types D, E, & F-Quadruple Variable Springs
Fig. PTP-8-Type G-Quadruple Variable Springs
Fig. 400-Light Duty Spring Hanger
Customization Options
Customization Addendum for Spring Supports
Sizing & Stress Analysis
Spring Support Sizing & Pipe Stress Analysis
Technical Information
Why PT&P Spring Supports
Engineered Spring Supports – General Information
Sizing a Variable Spring Support
Furnace Springs vs. Standard Springs
Inspection and Maintenance of Supports
Safety Alert for Installation of Springs
Methods of Protecting against Corrosion
Variable Spring Supports vs. Constant Spring Supports
Considering All Movement in Pipe Support Design
Comparative Corrosion Resistance Guide
Installation & Maintenance
Variable Spring Supports Installation and Maintenance Guide

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How to Install a D-Type Variable Spring Support

Spring Loading Procedure for Standard Variable Springs

Variable Spring Supports Product Video

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What is the difference between a constant spring and a variable spring?

Variable springs always must have a difference in load between the hot and cold settings. Whereas in constant springs, the ...Continue Reading

What is a spring hanger?

A spring hanger is a subset of either variable or constant spring supports that attach directly to structural steel components ...Continue Reading

What does the hot or cold setting mean on a variable spring support?

The “cold” setting of a variable spring support refers to the installed position and the associated load being carried by ...Continue Reading

What are the Variable Spring Types?

We offer seven different configurations for Variable Spring Supports (Type A, B, C, D, E, F, G). Click here for ...Continue Reading

What are spring cans?

“Spring can” is the general term used to describe either variable or constant spring supports. Custom Spring Can with Slide ...Continue Reading

Is it practical to try to design a variable spring support or constant spring support for travel less than 0.1″?

It would not be recommended for a constant spring to be designed for less than 0.1″ for travel. Variable springs ...Continue Reading


More FAQs…

General Dimensions & Specifications

PT&P has set up it’s manufacturing to offer an unparalleled set of customization options with minimal impact on delivery timeframes. In addition to our standard (hot-dipped galvanized, neoprene lined springs) variable spring supports, we can customize any material, finish, dimension, load, load adjustment, travel, travel stops, as well as providing sensors for remote monitoring. View more details on how we can customize your variable spring support.

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