INSTALLATION GUIDES

Constant Spring Support

Variable Spring Support

Anchorframe Modular Supports

Rigid Pipe Supports

CONSTANT SPRING SUPPORTS

Variable Springs Characteristics
The variable spring units are supplied in the pre-set load condition by using two locking stops, each located on either side of the spring casing. These locking stops should only be removed once the complete spring assembly has been attached between the pipework and the supporting steelwork.

Hydrostatic Test Loads
Every variable spring unit can withstand a hydrostatic test load of up to two times the maximum load shown in the selection table for a particular size.
Surface Protection
hot dip galvanised is the standard finish for spring supports.
Multi-coat protective finishes are available on request.

Ordering
The following information is required when ordering a variable spring unit
• Support/tag number
• Variable type (e.g. Fig QV1)
• Size (0-22)
• Mounting type (e.g. A, B, C, etc.)
• Operating load (Kg or kN)
• Pre-set load (OPS can calculate this if required)
• Hydrostatic test load (if known)
• Vertical movement (mm)
• Direction of movement (up / down)
• Quantity required
• Surface finish specification (standard is hot dip galvanised)
• If hydrostatic test stops are required
• Distance between rod centres and total operating load (for model ‘G’ only)

Installation Instructions
Variable spring units are pre-set to a specific load in our works that considers the operating load and movement at each support point.

If the pipework system is subject to hydraulic testing before regular service, the spring units should be ordered with down travel hydrostatic test stops. These should remain in position until after the hydraulic test has been carried out.
In the event that the pipework service is not subject to hydrostatic testing, then the standard pre-set stops supplied with the variable units will be sufficient.
Once removed, store the pre-set stops for future use. If it becomes evident that an incorrect load is being applied to any support in the system, it is advisable to contact your technical team or managers.

 

Adjustment
Once installed, the variable spring units should be adjusted until the load indicators point to the established load position. After a reasonable period of operation, the load indicator should indicate the operating load. If minor differences are apparent, then adjust to the correct operating position. No further adjustments should be necessary.
If significant differences are noted, consult the designer or manufacturer for further advice before making any adjustments.

Range of site adjustment:
Hanging type’s ±75mm
Base mounted type’s ±25mm

Installation of Spring Units Type A, B & C
The spring unit is fitted between the pipe/duct U-bracket to be supported and the steelwork above the unit. The hanger rod coming up from the pipe/duct/bracket is connected with a turnbuckle which is fitted to all three types of spring units.

Rotation of the turnbuckle transfers the operating load of the pipe to the spring unit, thus allowing withdrawal of the pre-set stops. No further adjustment should be required unless it becomes obvious that incorrect loads are being applied to adjacent supports in the system.

Installation of Spring Units Type D & E
Both of these units are mounted on top of the steelwork.

Installation of Spring Units Type D
The hanger rod passes through the unit and is secured at the top of the spring load tube by two nuts. The hanger rod should be of adequate length and with sufficient thread, considering any deviation in the pipe or duct elevation since these units are not supplied with a turnbuckle. Adjustment of the two nuts transfers the load to the spring unit, thus allowing withdrawal of the pre-set stops.

Installation of Spring Units Type E
The rod hanger passes through the unit and is secured by two nuts which prevent it from passing through the spring pressure plate. The turnbuckle adjusts in length at a convenient position in the hanger assembly. Rotation of the turnbuckle transfers the load to the spring unit allowing withdrawal of the pre-set stops.

VARIABLE SPRING SUPPORTS

Variable Springs Characteristics
The variable spring units are supplied in the pre-set load condition by using two locking stops, each located on either side of the spring casing. These locking stops should only be removed once the complete spring assembly has been attached between the pipework and the supporting steelwork.
Hydrostatic Test Loads
Every variable spring unit can withstand a hydrostatic test load of up to two times the maximum load shown in the selection table for a particular size.
Surface Protection
hot dip galvanised is the standard finish for spring supports. Multi-coat protective finishes are available on request.

Ordering
The following information is required when ordering a variable spring unit
• Support/tag number
• Variable type (e.g. Fig QV1)
• Size (0-22)
• Mounting type (e.g. A, B, C, etc.)
• Operating load (Kg or kN)
• Pre-set load (OPS can calculate this if required)
• Hydrostatic test load (if known)
• Vertical movement (mm)
• Direction of movement (up / down)
• Quantity required
• Surface finish specification (standard is hot dip galvanised)
• If hydrostatic test stops are required
• Distance between rod centres and total operating load (for model ‘G’ only)

Installation Instructions
Variable spring units are pre-set to a specific load in our works that considers the operating load and movement at each support point.
If the pipework system is subject to hydraulic testing before regular service, the spring units should be ordered with down travel hydrostatic test stops. These should remain in position until after the hydraulic test has been carried out.
In the event that the pipework service is not subject to hydrostatic testing, then the standard pre-set stops supplied with the variable units will be sufficient.
Once removed, store the pre-set stops for future use. If it becomes evident that an incorrect load is being applied to any support in the system, it is advisable to contact your technical team or managers.

Adjustment
Once installed, the variable spring units should be adjusted until the load indicators point to the established load position.
After a reasonable period of operation, the load indicator should indicate the operating load.
If minor differences are apparent, then adjust to the correct operating position. No further adjustments should be necessary.
If significant differences are noted, consult the designer or manufacturer for further advice before making any adjustments.
Range of site adjustment:
Hanging type’s ±75mm
Base mounted type’s ±25mm

Installation of Spring Units Type A, B & C
The spring unit is fitted between the pipe/duct U-bracket to be supported and the steelwork above the unit. The hanger rod coming up from the pipe/duct/bracket is connected with a turnbuckle which is fitted to all three types of spring units.
Rotation of the turnbuckle transfers the operating load of the pipe to the spring unit, thus allowing withdrawal of the pre-set stops. No further adjustment should be required unless it becomes obvious that incorrect loads are being applied to adjacent supports in the system.

Installation of Spring Units Type D & E
Both of these units are mounted on top of the steelwork.
Installation of Spring Units Type D
The hanger rod passes through the unit and is secured at the top of the spring load tube by two nuts. The hanger rod should be of adequate length and with sufficient thread, considering any deviation in the pipe or duct elevation since these units are not supplied with a turnbuckle. Adjustment of the two nuts transfers the load to the spring unit, thus allowing withdrawal of the pre-set stops.


Installation of Spring Units Type E
The rod hanger passes through the unit and is secured by two nuts which prevent it from passing through the spring pressure plate. The turnbuckle adjusts in length at a convenient position in the hanger assembly. Rotation of the turnbuckle transfers the load to the spring unit allowing withdrawal of the pre-set stops.