PIPER SUPPORT SYSTEM

Carpenter & Paterson (Asia) Ltd offers a comprehensive range of Pipe Support components. This includes both ‘off-the-shelf’ standard support components as well as engineered support components.

CPA’s engineered pipe support solutions enable us to fulfil often very specific client requirements. Such requirements are based upon the unique characteristics of the piping system in question, including available support locations, spacing considerations, pipe size, pipe material, ambient/operating temperature and operating/occasional load, for example.

CPA’s components can be manufactured from a wide range of materials including carbon, stainless and alloy steels. Such materials are available in many different grades. CPA’s standard hot-dip galvanized offering, as well as in-house painting capabilities, ensures that our products remain highly corrosion resistant and suitable for almost all environments. CPA also offer specialist paint finishes as required.

PRODUCT

VARIABLE EFFORT SPRING SUPPORTS	CONSTANT EFFORT SPRING SUPPORTS

Both the AV and LV spring supports are produced in four basic travel ranges; 35mm, 70mm, 140mm and 210mm. These are designated AV35, LV35, AV70, LV70, AV140, LV140, AV210, LV210. These travel ranges indicate the maximum working range of the springs. This full travel can be used provided that the necessary calculations are carried out to ensure that the connecting equipment and pipework can withstand the load changes that occur during pipe movement. Most national standards do limit the load variation to a maximum of 25%. It is therefore usual to select variable spring supports on this basis. In keeping with generally accepted practice, we recommend that the actual pipe load is correctly supported when the pipe is in its normal working position. This ensures no abnormal or excessive forces, due to out of balance supporting effort, is transferred to the pipework in its stressed working condition. The standard and optional design features of CPA variable supports are as follows: STANDARD DESIGN FEATURES Precompression of the spring coil into the casing saves headroom and erection time. For each series there is a reserve travel at the upper and lower limits of the unit. All steel construction that is rugged and compact. Grade 316 stainless steel is used for scale plate and name plate. Load indicator clearly visible. Spring Pressure plate serves as a centering device. Finish – hot dip galvanized – specialized coatings are also available. All ‘F’ type floor/base mounted units are inclusive of load flange and internal load column guide. Travel stops – The Carpenter & Paterson design is supplied with stops to take the preset and hydrostatic test loads. No maintenance required. OPTIONAL DESIGN FEATURES Limit stops permanently installed to prevent the movement of the pipe beyond predetermined distance or load within the travel range of the spring. Lifting lugs are available on large sizes to facilitate erection and installation. For extreme environmental conditions we are able to manufacture our units in a range of austenitic stainless steels.	A constant effort support is preferred when the use of a variable effort support may be not appropriate for the following reasons: The vertical movement is too great for a variable effort support (approx. > 75mm) Only a small change in load is acceptable (e.g. close to sensitive equipment) Space considerations prevent the use of variable effort supports. The Constant Support is based on a simple mechanical principle: In order to produce a constant supporting effort, the load moment about the main pivot must be counterbalanced by an equal spring moment throughout the travel range. The constant effort support designed and manufactured by CPA incorporates the latest design concepts to produce a support which provides an essentially constant supporting effort throughout the total travel of the unit. The robust and simple construction of the well-proven C&P design using a bell-crank lever has been enhanced to include universal locking of the load arm. With a cylindrical spring housing of substantial construction, and several support configurations to suit the position relative to steelwork and available space, the unit can be installed in many arrangements. The spring housing prevents the ingress of foreign bodies such as construction debris, thus reducing the danger of damage or restriction of the unit’s function. The universal locking mechanism allows the load arm to be locked in any position for the purpose of hydrostatic test, maintenance and decommissioning. The locking is done at the load arm so that excessive loadings are not transferred to the spring tension rod and spring coil. The threaded rods which are used for universal locking, are removed once the support has been installed and are stowed on the side of the spring housing. STANDARD DESIGN FEATURES The standard range of CPA constant effort supports are constructed to accommodate loads between 8kg and 33500kg with a standard range of travels between 40mm and 610mm in 10mm increments. Constant effort supports are manufactured having maximum deviation of +/-5% of the specified load. Universal Locking of the load arm is provided as standard. Upper and lower travel stops are incorporated in all units to prevent excessive overtravel. All supports are fitted with a clearly visible travel scale. Supports are supplied with hot-dip galvanized finish as standard. Spring coils are supplied plastic-coated as standard. Screw Threads are ISO-metric coarse pitch series (6mm pitch series above size M64). SPECIAL DESIGN FEATURES Special Constant Supports can be designed for higher loadings or travels than are covered by the standard range. Supports can be designed for hydrostatic test more than twice the operating load. Supports can be supplied with special paint finish or manufactured from corrosion-resistant materials.

VARIABLE EFFORT SPRING SUPPORTS

CONSTANT EFFORT SPRING SUPPORTS

Both the AV and LV spring supports are produced in four basic travel ranges; 35mm, 70mm, 140mm and 210mm. These are designated AV35, LV35, AV70, LV70, AV140, LV140, AV210, LV210.

These travel ranges indicate the maximum working range of the springs. This full travel can be used provided that the necessary calculations are carried out to ensure that the connecting equipment and pipework can withstand the load changes that occur during pipe movement. Most national standards do limit the load variation to a maximum of 25%. It is therefore usual to select variable spring supports on this basis.

In keeping with generally accepted practice, we recommend that the actual pipe load is correctly supported when the pipe is in its normal working position. This ensures no abnormal or excessive forces, due to out of balance supporting effort, is transferred to the pipework in its stressed working condition.

The standard and optional design features of CPA variable supports are as follows:

STANDARD DESIGN FEATURES

Precompression of the spring coil into the casing saves headroom and erection time.
For each series there is a reserve travel at the upper and lower limits of the unit.
All steel construction that is rugged and compact.
Grade 316 stainless steel is used for scale plate and name plate.
Load indicator clearly visible.
Spring Pressure plate serves as a centering device.
Finish – hot dip galvanized – specialized coatings are also available.
All ‘F’ type floor/base mounted units are inclusive of load flange and internal load column guide.
Travel stops – The Carpenter & Paterson design is supplied with stops to take the preset and hydrostatic test loads.
No maintenance required.

OPTIONAL DESIGN FEATURES

Limit stops permanently installed to prevent the movement of the pipe beyond predetermined distance or load within the travel range of the spring.
Lifting lugs are available on large sizes to facilitate erection and installation.
For extreme environmental conditions we are able to manufacture our units in a range of austenitic stainless steels.

A constant effort support is preferred when the use of a variable effort support may be not appropriate for the following reasons:

The vertical movement is too great for a variable effort support (approx. > 75mm)
Only a small change in load is acceptable (e.g. close to sensitive equipment)
Space considerations prevent the use of variable effort supports.

The Constant Support is based on a simple mechanical principle: In order to produce a constant supporting effort, the load moment about the main pivot must be counterbalanced by an equal spring moment throughout the travel range.

The constant effort support designed and manufactured by CPA incorporates the latest design concepts to produce a support which provides an essentially constant supporting effort throughout the total travel of the unit. The robust and simple construction of the well-proven C&P design using a bell-crank lever has been enhanced to include universal locking of the load arm.

With a cylindrical spring housing of substantial construction, and several support configurations to suit the position relative to steelwork and available space, the unit can be installed in many arrangements. The spring housing prevents the ingress of foreign bodies such as construction debris, thus reducing the danger of damage or restriction of the unit’s function.

The universal locking mechanism allows the load arm to be locked in any position for the purpose of hydrostatic test, maintenance and decommissioning. The locking is done at the load arm so that excessive loadings are not transferred to the spring tension rod and spring coil. The threaded rods which are used for universal locking, are removed once the support has been installed and are stowed on the side of the spring housing.

STANDARD DESIGN FEATURES

The standard range of CPA constant effort supports are constructed to accommodate loads between 8kg and 33500kg with a standard range of travels between 40mm and 610mm in 10mm increments.
Constant effort supports are manufactured having maximum deviation of +/-5% of the specified load.
Universal Locking of the load arm is provided as standard.
Upper and lower travel stops are incorporated in all units to prevent excessive overtravel.
All supports are fitted with a clearly visible travel scale.
Supports are supplied with hot-dip galvanized finish as standard.
Spring coils are supplied plastic-coated as standard.
Screw Threads are ISO-metric coarse pitch series (6mm pitch series above size M64).

SPECIAL DESIGN FEATURES

Special Constant Supports can be designed for higher loadings or travels than are covered by the standard range.
Supports can be designed for hydrostatic test more than twice the operating load.
Supports can be supplied with special paint finish or manufactured from corrosion-resistant materials.

/ Request A Quote /


More Info	More Info	More Info

CRYOGENIC SUPPORTS

CRYOGENIC SUPPORTS Cryogenic pipe supports are necessary when producing, processing, transporting and distributing liquefied gases such as Liquefied Natural Gas (LNG) or Liquefied Petroleum Gas (LPG) which can reach temperatures as low as -165°c. CPA manufactures cryogenic pre-insulated pipe supports (also known as ‘cold shoes’) incorporating high density polyurethane foam (HD PUF) as a highly effective load bearing cryogenic insulation medium. CPA’s cryogenic supports are engineered in order to fulfil specific client requirements which may vary according to several factors, including load carrying capacity and installation restrictions, for example.

CRYOGENIC SUPPORTS

CRYOGENIC SUPPORTS

Cryogenic pipe supports are necessary when producing, processing, transporting and distributing liquefied gases such as Liquefied Natural Gas (LNG) or Liquefied Petroleum Gas (LPG) which can reach temperatures as low as -165°c.

CPA manufactures cryogenic pre-insulated pipe supports (also known as ‘cold shoes’) incorporating high density polyurethane foam (HD PUF) as a highly effective load bearing cryogenic insulation medium.

CPA’s cryogenic supports are engineered in order to fulfil specific client requirements which may vary according to several factors, including load carrying capacity and installation restrictions, for example.

/ Request A Quote /

PTFE SLIDE BEARINGS

The slide bearing possesses an extremely low coefficient of friction, thus enabling the stainless steel plate to slide easily against the PTFE material. Key advantages of PTFE slide bearing: Simplistic design and ease of fabrication and installation results in cost efficiency. Costs of a construction can be reduced by designing for expansion rather than strain. Coefficient of friction over the bearing surface remains constant, even under worst case scenarios. The bearings are maintenance free – PTFE is inherently self-lubricating, while dirt particles are absorbed into the material. Only simple protection is required against the significant ingress of dirt.

PTFE SLIDE BEARINGS

The slide bearing possesses an extremely low coefficient of friction, thus enabling the stainless steel plate to slide easily against the PTFE material.

Key advantages of PTFE slide bearing:

Simplistic design and ease of fabrication and installation results in cost efficiency.
Costs of a construction can be reduced by designing for expansion rather than strain.
Coefficient of friction over the bearing surface remains constant, even under worst case scenarios.
The bearings are maintenance free – PTFE is inherently self-lubricating, while dirt particles are absorbed into the material. Only simple protection is required against the significant ingress of dirt.

/ Request A Quote /

WITCHLINER™

WITCHLINER™ CPA manufactures its trademark WITCHLINER™ isolation material using either of the following materials: 78/80 FR Neoprene (temperature range -30°c to 100°c) Strong, resilient material Highly effective in reducing noise and vibration in pipework Outstanding resistance to wide range of chemicals, including acids, akalis, fats, oils, greases and solvents Excellent resistance to tear and abrasion, ozone and weathering Silicone (temperature range -70°c to 300°c) Excellent resistance to fire, very low toxicity Can perform at temperatures up to 300°c with minimum loss of characteristics Excellent resistance to ozone, weathering, and a wide range of chemicals, solvents, oils and greases Where necessary, WITCHLINER™ also provides an effective solution to isolating differing grades of steel from one another (e.g. a stainless steel pipe from carbon steel pipe clamp) thus preventing surface contamination or bimetallic corrosion. This often results in significant cost saving for clients. CPA’s standard range of WITCHLINER™ isolation products is shown below. Other special designs and models are available to suit specific customer requirements.

WITCHLINER™

WITCHLINER™

CPA manufactures its trademark WITCHLINER™ isolation material using either of the following materials:

78/80 FR Neoprene (temperature range -30°c to 100°c)

Strong, resilient material
Highly effective in reducing noise and vibration in pipework
Outstanding resistance to wide range of chemicals, including acids, akalis, fats, oils, greases and solvents
Excellent resistance to tear and abrasion, ozone and weathering

Silicone (temperature range -70°c to 300°c)

Excellent resistance to fire, very low toxicity
Can perform at temperatures up to 300°c with minimum loss of characteristics
Excellent resistance to ozone, weathering, and a wide range of chemicals, solvents, oils and greases

Where necessary, WITCHLINER™ also provides an effective solution to isolating differing grades of steel from one another (e.g. a stainless steel pipe from carbon steel pipe clamp) thus preventing surface contamination or bimetallic corrosion. This often results in significant cost saving for clients.

CPA’s standard range of WITCHLINER™ isolation products is shown below. Other special designs and models are available to suit specific customer requirements.

/ Request A Quote /

We’re here to help your business blast off!

Through creative ideas, innovation & sheer determination

Let’s Get Started!