Backing Ring ANSI Class 150

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Useful Information

Technical Specification

  • Product type: Backing ring
  • Material: Galvanised steel
  • Standard: ANSI Class 150
  • Size range: 20mm to 160mm
  • Drilling standard: ANSI Class 150
  • Number of bolt holes: Size dependent (see technical table)
  • Compatibility: ABS metric stub flanges, gaskets and bolt sets

Description

The Backing Ring ANSI Class 150 is designed to provide robust mechanical reinforcement for ABS metric flanged joints that require ANSI Class 150 bolt patterns. Manufactured from galvanised steel, this backing ring delivers the strength and rigidity needed to support ABS stub flanges in demountable pipework connections.

When used alongside an ABS metric stub flange and gasket, the backing ring ensures even compression across the flange face, helping to maintain a secure and leak-free joint while preventing deformation of the ABS component during bolt tightening.

Drilled to ANSI Class 150, this backing ring is ideal for installations where pipework must interface with ANSI-flanged equipment, valves or systems, making it a practical solution for international or mixed-standard installations.

Key Features & Benefits

  • Galvanised steel construction: High strength with corrosion resistance
  • ANSI Class 150 drilling: Compatible with ANSI-flanged pipework and equipment
  • Secure flange reinforcement: Protects ABS stub flanges during assembly
  • Even load distribution: Helps maintain reliable gasket sealing
  • System compatible: Designed for use with ABS stub flanges and gaskets
  • Metric size range: Available from 20mm to 160mm

ABS-Backing-Ring-Diagram

Product Code Nominal Size (mm) A (mm) B (mm) C (mm) P (mm) No of holes Hole Diameter (mm)
350238 20 90 8 28 61 4 16
350239 25 100 8 34 70 4 16
350240 32 110 9 42 79 4 16
350241 40 118 8 51 90 4 16
350242 50 129 8 63 99 4 16
350243 63 154 10 78 121 4 19
350244 90 192 11 110 153 4 19
350245 110 230 11 133 190 8 19

 

IMPORTANT: The technical data given on this website is for preliminary information purposes only and is published without guarantee. All line drawings are for illustrative purposes only and should not be regarded as wholly accurate in every detail. We reserve the right to withdraw or to alter the specification of any product without notice. For more information, please consult our Terms of Business.

If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.

 

Grouped product items
Code Product Name List Price You Save You Pay Quantity
350238 DP Steel Backing Ring ANSI 150 20mm or 1/2" £28.31 30%
You Pay:  £19.82
350239 DP Steel Backing Ring ANSI 150 25mm or 3/4" £31.31 30%
You Pay:  £21.92
350240 DP Steel Backing Ring ANSI 150 32mm or 1" £33.44 30%
You Pay:  £23.41
350241 DP Steel Backing Ring ANSI 150 40mm or 1 1/4" £39.41 30%
You Pay:  £27.58
350242 DP Steel Backing Ring ANSI 150 50mm or 1 1/2" £50.23 30%
You Pay:  £35.16
350243 DP Steel Backing Ring ANSI 150 63mm or 2" £61.46 30%
You Pay:  £43.02
350244 DP Steel Backing Ring ANSI 150 75mm £84.75 30%
You Pay:  £59.32
350245 DP Steel Backing Ring ANSI 150 90mm or 3" £89.60 30%
You Pay:  £62.72
350246 DP Steel Backing Ring ANSI 150 110mm or 4" £119.94 30%
You Pay:  £83.96
350247 DP Steel Backing Ring ANSI 150 125mm £138.70 30%
You Pay:  £97.09
350248 DP Steel Backing Ring ANSI 150 140mm £174.96 30%
You Pay:  £122.47
350249 DP Steel Backing Ring ANSI 150 160mm £200.62 30%
You Pay:  £140.44