Flanges
Paddle Blind (Spade) Flange
Paddle blinds (spades) to ASME B16.48 for isolating a line between two flanges, 1/2″ to 48″, up to Class 2500, in A105 carbon steel.
Specification
At a glance
- Dimensional standard
- ASME B16.48
- Size range
- 1/2″ – 48″ (15 – 1200 NB)
- Pressure classes
- Class 150 · Class 300 · Class 600 · Class 900 · Class 1500 · Class 2500
- Types & ends
- Paddle blind (spade)
- Materials
- Carbon steel ASTM A105
As published by Fortune Fittings Private Limited. Grade and availability are confirmed with each enquiry; confirm the governing standard, size and grade when ordering. Spotted a mistake? Please contact us.
Overview
Product overview
Our Paddle Blind Flanges conform to ASME B16.48 standards, ensuring precise dimensions, reliable materials, and strict tolerances.
What is a Paddle Blind Flange?
Paddle Blind Flanges, also known as Spade or Paddle Blank Flanges, are essential components used to block off a section of a pipeline or vessel during maintenance or repair work. These flanges consist of a solid plate or paddle that fits between two standard flanges and are secured by bolts. They are typically made from robust materials such as A105 carbon steel and are available in various sizes and pressure ratings to accommodate different industrial needs.
Product Range
Fortune Fittings Private Limited maintains a ready inventory of Paddle Blind Flanges in various sizes and pressure ratings, including 2 Inch, 3 Inch, 4 Inch, 6 Inch, and 8 Inch Spade Blind Flanges. Our products are designed to meet international standards such as ASME, BS, DIN, and more, ensuring broad compatibility and high performance.
Where it is used
Applications and service
Typical duty across the process industries we supply.
- Paddle Blind Flanges are vital in applications requiring frequent maintenance or where complete isolation of a pipeline section is necessary.
- Conforming to ASME B16.48 standards, these flanges are manufactured to precise specifications, ensuring compatibility and safety in various industrial environments, including oil and gas, petrochemical, and power generation industries.
Engineering
Technical notes
How the component behaves in the line, and the details to settle before an order is placed.
How it behaves in the line
- The flat-plate design results in higher bending stress at centre: wall thickness is greater than equivalent pipe
- Available in all standard pressure classes (BS-10 Table D, ASME B16.5 Class 150–2500)
- Can be drilled and tapped for instrumentation connections
- Maximum unsupported span is limited: check ASME B31.3 Appendix E or equivalent
Confirm when ordering
- For future connections: specify drilling pattern on blind face in advance
- Confirm gasket type matches mating flange facing (FF vs RF)
Dimensions, wall thicknesses and pressure classes are in the dimension tables; the governing standards are summarised on the standards reference.
Characteristics
What defines the range
- High Durability: Manufactured from high-quality materials like carbon steel, stainless steel, and alloy steel.
- Versatility: Available in multiple sizes, from ½ inch (15 NB) to 48 inches (1200 NB), and pressure classes up to 2500 LBS.
- Reliable Sealing: The “RF” (Raised Face) designation ensures a tight seal against the mating flange.
- Custom Solutions: Offers customization options to meet specific customer requirements.
Related
Specified alongside this
Components that commonly appear with it on the same run, and the rest of the flanges range.
Used on the same lineRing SpacerRing spacers to ASME B16.48 that increase the distance between two flanges where extra space is needed in a piping system.View specifications
Used on the same lineWeld Neck FlangeWeld neck flanges to ASME B16.5, ASME B16.47 and EN 1092, including long weld neck, with tables for MS, carbon, stainless and Cr-Mo grades.View specifications
Used on the same lineSlip-On FlangeSlip-on flanges to ASME B16.5 and EN 1092-1, flat or raised face, with dimension tables for mild, carbon and stainless steel.View specifications
Same rangeBlind FlangeBlind flanges to ASME B16.5, ASME B16.47, BS 4504 and EN 1092-1, 1/2″ to 48″, with tables for MS, carbon, stainless and Cr-Mo grades.View specifications
Same rangeSocket Weld FlangeSocket weld flanges to ASME B16.5 and BS 4504 for small-bore, high-pressure lines, in stainless and carbon steel, with Class 150 tables.View specifications
Same rangeThreaded FlangeThreaded flanges to ASME B16.5 with NPT or BSP threads for low-pressure lines where welding is not wanted, with Class 150 tables.View specifications
Where it is specified
Industries using this component
Sectors that commonly specify the Paddle Blind, and what else they take from us.
Enquiries
Need a quotation for the Paddle Blind?
Send sizes, grades, quantities and the standard the component is specified to, and a sales engineer will come back with availability and pricing. Dimensions and schedules are in the Technical Catalog.