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Variable Pipe Support

Variable supports used for piping subject to vertical movement where some change in the supporting effort with

change of position is acceptable.

Variable Supports are recommended for general use on non-critical systems where vertical movement is of small

magnitude, typically up to 50mm.Accepted practice is to limit the amount of supporting force variation to 25% of

the hot load for critical system applications.

Size Range

Radcoflex Variable support is manufactured in 3 figure numbers & seven types, and is offered in 21 sizes. The

support can be furnished to take loads from 0.22 to 125 Kilonewtons.

Design Features

Precompressing the spring into the support casing provides the following advantages:

Saves up to 50% in headroom by reducing the length of the support.

Reduces the overall height of the support assembly.

Spring deflection indicator is clearly visible from both sides of the support.

Corrosion resistant construction model is supplied with a bolted closure providing access to the spring for

maintenance purposes.

All models fitted with travel stops and factory preset spring deflection. This saves on site erection &commissioning time.

Support casting has been designed to permit drainage of water and to protect spring from damage.

Types Of Variable Pipe Support


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The type of variable support to be used depends upon the physical characteristics required by the suspension, i.e.

amount of headroom and whether pipe is to be supported above the spring or below the spring.Consideration

should be given to the seven standard types offered, type A through to G.Special variable support can be

fabricated for unusual conditions.

Type A is designed for attachment to a structural member by screwing a rod into a tapped hole for the full depth

of the top cap.

Type B is furnished with a single lug for attachment to the building structure. The lug permits use of a welded

beam attachment, clevis or a pair of angles for attachment.

Type C is furnished with a single lug for attachment to the building structure. These two lugs permit the use of

eye rod or structural welding lug for attachment where headroom is limited.

Type D is especially adapted for use where the support is set above the supporting structure and pipe is

suspended below. It permits adjustment of the support from the top.

Type E is designed to permit adjustment from either above or below the support, when it is installed upon the

supporting structure and pipe is suspended below. A coupling tapped right hand both ends is furnished.

Type F is recommended where the support must be located below the load. Where horizontal load movements

in excess of 6mm are anticipated, consideration should be given to replacing the optional load flange with pipe roll

or a sliding support comprising a Rulon pad in contact with a stainless steel plate.

Type G is complete trapeze assembly. This consists of two standard spring units plus a pair of back-to-back

channels welded at each end to the castings of the supports


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variable pipe supportsfor further information on Radco exe-mail : sales@radco ex.com

RADCOFLEX Trade Mark of Radco ex Australia Pty Limited. 2003/01 web : www.radco ex.comConstant Pipe Support


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The Radcoflex constant support system has a mathematically perfect design which ensures that the pipe will have

continuous controlled support through its entire deflection range.

The supporting mechanism comprises a coil spring connected to a centrally pivoted lever by tension rods. The load

is attached to the other end of the lever by a hanger rod.

The force of the load acting at one end of the lever creates a turning moment produced by the spring force acting

at the other end of the lever.The Radcoflex constant support is designed so that these moments are always equal

and opposite.

Size Range

Constant hangers are made in two basic designs Figure 81H (Horizontal design) and the figure 80V (Vertical

design). Combined, the 81H and 80V constant supports are made in 110 different sizes to accommodate travels

from 40 to 500mm and loads from 0.12 to 403.5 KN.

Design Features

Because of exclusive geometric design, mathematically perfect constancy of support is maintained throughout

the full range of travel.

Compactness the provision of horizontal & vertical configuration minimizes installation space.

Each support is individually calibrated to the customer's specified load.

All constant support have a wide range of load adjustability.

Provision for hanger rod to swing up to 6 from the vertical.

Types Of Constant Pipe Support

Figure 81 H (Horizontal):

Type A support is designed for attaching to a structural member by screwing two rods into tapped holes in the

top of the frame of the support.

Type B is furnished with two lugs- one at each end of the support frame. These lugs permit the attachment of


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the support to the building structure using welded beam attachment

Type C is furnished with four lugs, one pair of lugs at each end of frame of the support. These lugs permit the

attachment of the support to the building structure.

Type D may be bolted directly under structural steel.

Type E enables the support to be bolted on top of the structural steel.

Figure 80 V (Vertical):

Type A supports is designed for attachment to a structural member by screwing a rod into a tapped hole in the

top cap. Sight holes are provided near the top of the casing to allow visible inspection for correct threadengagement of upper hanger rod.

Type B is furnished with a single lug for attachment to the building structure. The lug permits use of welded


Type C is furnished with a pair of lugs for attachment to the building structure. These lugs permit the use of a

structural welded lug, eye rods.

Type D rests on the top flange of structural steel while most of the constant support itself hangs between or

below the supporting beams.

Type E rests on the top flange of structural steel and the constant support is entirely above the supporting

beams.

Type F is the support of piping or equipment from below. It has a base flange for fastening to the floor or tobeams. The load arm is furnished with a removal load pin. Sway strut may be used to connect the support to the

load. The strut should be ordered separately.

Type G is a complete trapeze assembly. This consists of two vertical type constant support units plus a pair of

channels, back-to- back, welded at each end to the casings of the supports.

size rangeRadco ex variable supports are manufactured inthree gure numbers (models) with seven types ineach, and 21 sizes of each con guration. Therange can accommodate loads from 0.22 to 125kN.

selection criteriaIn order to select the correct type and size ofvariable support, it is necessary to know:- the working (hot) load- the vertical movement- the direction of the vertical movement fromcold to hot positionFull technical speci cation booklets are availablefrom Radco ex to aid selection.style typesFigure numbers 82, B268 and 98.description

Variable pipe supports (also referred to as variablespring hangers) are used for supporting pipes atpoints that are subject to vertical movement.

A variable support gives a supporting force whichvaries with the de ection of the support spring.applications

Suitable for general use on non-critical pipingsystems or on critical systems where the verticalmovements are small (usually up to 50 mm).speci cationThe support consists of a coil spring tted inside asteel casing, and is tted with a spring de ectionscale. Travel stops are an optional extra feature.Radco ex variable supports meet the requirementsof ANSI Code for Pressure Piping ANSI B31.10.materials of construction and nishCarbon steel with red zinc chromate nish.Corrosive resistant models hot dip galvanized

.


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variable pipe supportsfor further information on Radco exe-RADCOFLEX Trade Mark of Radco ex Australia Pty Limited. 2003/01 web :

Constant Pipe Support

The Radcoflex constant support system has a mathematically perfect design which ensures that the pipe will have

continuous controlled support through its entire deflection range.

The supporting mechanism comprises a coil spring connected to a centrally pivoted lever by tension rods. The load

is attached to the other end of the lever by a hanger rod.

The force of the load acting at one end of the lever creates a turning moment produced by the spring force acting

at the other end of the lever.The Radcoflex constant support is designed so that these moments are always equal

and opposite.

Size Range

Constant hangers are made in two basic designs Figure 81H (Horizontal design) and the figure 80V (Vertical

design). Combined, the 81H and 80V constant supports are made in 110 different sizes to accommodate travels

from 40 to 500mm and loads from 0.12 to 403.5 KN.

Design Features

Because of exclusive geometric design, mathematically perfect constancy of support is maintained throughout

the full range of travel.

Compactness the provision of horizontal & vertical configuration minimizes installation space.

Each support is individually calibrated to the customer's specified load.

All constant support have a wide range of load adjustability.

Provision for hanger rod to swing up to 6 from the vertical.


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constant pipe supportsfor further information on Radco exe-mail :

RADCOFLEX Trade Mark of Radco ex Australia Pty Limited. 2003/01

Types Of Constant Pipe Support

Figure 81 H (Horizontal):

Type A support is designed for attaching to a structural member by screwing two rods into tapped holes in the

top of the frame of the support.

Type B is furnished with two lugs- one at each end of the support frame. These lugs permit the attachment of

the support to the building structure using welded beam attachment

Type C is furnished with four lugs, one pair of lugs at each end of frame of the support. These lugs permit the

attachment of the support to the building structure.

Type D may be bolted directly under structural steel.

Type E enables the support to be bolted on top of the structural steel.

Figure 80 V (Vertical):

Type A supports is designed for attachment to a structural member by screwing a rod into a tapped hole in thetop cap. Sight holes are provided near the top of the casing to allow visible inspection for correct thread

engagement of upper hanger rod.

Type B is furnished with a single lug for attachment to the building structure. The lug permits use of welded


Type C is furnished with a pair of lugs for attachment to the building structure. These lugs permit the use of a

structural welded lug, eye rods.

Type D rests on the top flange of structural steel while most of the constant support itself hangs between or

below the supporting beams.

Type E rests on the top flange of structural steel and the constant support is entirely above the supporting

beams. Type F is the support of piping or equipment from below. It has a base flange for fastening to the floor or to

beams. The load arm is furnished with a removal load pin. Sway strut may be used to connect the support to the

load. The strut should be ordered separately.


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Type G is a complete trapeze assembly. This consists of two vertical type constant support units plus a pair of

channels, back-to- back, welded at each end to the casings of the supports.

style types

Figure number 81H horizontal.Figure number 80V vertical.description

Constant pipe supports provide a constantsupporting force for piping for a full range ofvertical movement resulting from expansion andcontraction.applicationsThe constant support is used where it is necessaryto prevent the load from the weight of the pipetransferring to connected equipment or adjacentsupports. They are used generally for the supportof critical piping systems.speci cationThe support consists of a coil spring tted insidea steel casing, working in conjunction with a bellcrank lever, and is tted with a spring de ectionscale. Travel stops are an extra feature. Radco exconstant supports meet the requirements of the(US) Manufacturers Standardization Society SP-69(Types 54, 55 and 56).materials of construction and nishCarbon steel with red zinc chromate nish.Corrosive resistant models hot dip galvanized.size rangeRadco ex constant supports are manufactured intwo gure numbers (models) with ve types ineach, and 110 sizes of each con guration. Therange can accommodate travels from 40 to 500mm and loads from 0.12 to 403.5 kN.selection criteriaThe type of constant support to be used dependsupon the available room for suspending thesupport ie. whether the support is to installedabove, between or below steel members andhow it is intended to attach the support to thesemembers.

constant pipe supportsfor further information on Radco exe-mail :RADCOFLEX Trade Mark of Radco ex Australia Pty Limited. 2003/01

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