Constant hangers and constant supports

Application

Constant hangers are used for piping and related components where higher levels of vertical travel occur. Their job is to transfer the working load over the whole travel area while keeping it constant, i.e. without any considerable deviations. The functional precision of the constant hangers is decisive for favourable long term behaviour of the components involved.

Mode of operation

The mode of operation is based on the arrangement of three springs according to the parallelogram of forces. The design is distinguished by a high degree of functional precision along with wide load adjustment ranges.

Scope of performance

LISEGA Benefits

Our constant hangers and constant supports offer the user a large number of special benefits:

360 Degree view

• front view
• rear view

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  • Principle-based constancy by way of a special mode of operation.

  • Pre-relaxed springs eliminate any significant loss of load-bearing capacity.

  • Reduced friction due to minimised number of bearing points.

  • Name plate contains complete technical specifications.

  • Directly readable travel scale with marking for hot/cold load positions.

  • Load scale with permanent marking of adjustment load.

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  • Turnbuckle function allows re-adjustment of pipe installation position.

  • Torque-free load application due to a single suspension point.

  • Blocking is adjustable to practically any travel position through fine-tooth notching.

  • Exceptionally wide load adjustment range helps to avoid hanger replacement when operational loads change.

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Handle

• Symmetrical design ensures direct flow of forces through axis of symmetry.
• Favourable power-weight ratios for reduced installation loads.
• Arranged by load groups and travel ranges to simplify selection (modular system).
• Consistent functional behaviour due to high-quality corrosion protection and maintenance-free, chemically nickel-plated finishes.
• Readily adaptable to the installation situation due to suitable designs and standardised accessories.
• Double load-tube guiding of constant supports for transmission of side loads.
• Secure connection of load chains due to load- and connection-compatible modular components.

Connections

• • Weld-on eye plate type 75

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  • Threaded clevis type 61

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  • Stud bolt type 67

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• • Weld-on clevis type 73

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  • Eye nut type 60

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  • Stud bolt type 67

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• • Supported by brackets type 71

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• • Supported by on-site steel construction

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Designs

Constant hanger type 11

Constant hanger type 11

Standard design for loads of up to 100 kN / 22,480.89 lbf

Constant hanger type 11 with support brackets type 71

Constant hanger type 11 with support brackets type 71

Standard design with support brackets bolted at the LISEGA factory for use as surface-mounted versions.

Constant hangers type 12-14

Constant hangers type 12-14

Standard design in a parallel set-up for loads of up to 500 kN / 112,404.47 lbf. Assembly possible at short notice from stock constant hanger units.

Constant hanger type 12-14 with support brackets type 71

Constant hanger type 12-14 with support brackets type 71

Standard design in a parallel set-up for loads of up to 500 kN / 112,404.47 lbf with support brackets bolted at the LISEGA factory for use as surface-mounted versions. Assembly possible at short notice from stock constant hanger units.

Heavy constant support type 16

Heavy constant support type 16

Special design as multi-cell constant support type 16, if heavy loads must be distributed.

Servo hanger type 17

Servo hanger type 17

Servo hangers are equipped with additional active load regulation, and can reduce overloading in the piping system to a permissible harmless level.

Constant hanger trapezes type 79

Constant hanger trapezes type 79

This type of trapeze is applied in case of limited installation height

Mounting examples