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Prime Steel is a distinguished name in the industry, recognized for its expertise as a manufacturer and supplier of spade paddle flanges. Specializing in producing high-quality components for piping systems, We have established ourselves as a reliable source for spade paddle flanges, also known as line blanks or spectacle blinds. These critical elements play a pivotal role in isolating sections of pipelines during maintenance, repairs, or testing.
Material Compatibility
Pressure and Temperature Ratings
Flange Standards
Facing Type (FF, RF, RTJ)
Size and Dimensions
Corrosion Resistance
ANSI/ASME B16.48, MSS SP-44, JIS B2220, DIN
15mm ( 1/2" NPS ) up to 600mm ( 48" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40.
flat face (FF), raised face (RF), and ring-type joint (RTJ)
Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel & Super Duplex Steel, LTCS, Nickel Alloy
oil and gas, petrochemical, chemical, water treatment industries
ASME B16.48 standard covers line blanks (paddle-type blank) and spectacle blind flanges for pressure classes 150, 300, 400, 600, 900, 1500, and 2500. It includes dimensions, tolerances, marking, and material requirements.
Read MoreA DIN spade flange refers to a flange that follows the standards set by the Deutsches Institut für Normung (DIN), which is the German Institute for Standardization. The term "spade" in this context likely refers to the shape of the flange.
Read MoreMSS SP-44 refers to the Standard Practice developed by the Manufacturers Standardization Society. MSS SP-44 spade and paddle flange would be a type of flange designed and manufactured according to the specifications outlined in MSS SP-44.
Read MoreThe pressure class of a spade and paddle blank flange, or simply a spade paddle blank flange, is determined by various factors such as material, design specifications, and adherence to specific standards. Blank flanges, including those with spade and paddle designs, are used to close the end of a pipeline or block off a connection
The appropriate pressure class for a spade and paddle blank flange should be selected based on the specific requirements of the application, taking into account factors like the fluid being conveyed, the operating temperature, and the maximum pressure the flange will be subjected to during operation.
A Spade Flange, also referred to as a Paddle Blank or Blind Flange, serves a crucial role in industrial piping systems where temporary isolation or blocking of specific sections is necessary. It is a versatile component designed for ease of installation, removal, and temporary sealing in various applications. is a specialized type of flange used in industrial piping systems. It consists of two components: a solid plate called the "spade" and a flat plate with an opening known as the "spacer." These components are placed between two flanges in a pipeline. The spade blocks the flow of fluid, providing temporary isolation, while the spacer maintains separation between the flanges.
Composition:
Temporary Isolation:
Pressure Testing:
Easy Installation and Removal:
Applications:
Standardization:
Safety Considerations:
The spade is a solid, flat plate that is positioned between two flanges in the joint. It serves the primary purpose of blocking the flow of fluid within the pipeline, providing temporary isolation.
The spacer is a flat plate with an opening in the center. It is installed alongside the spade between the flanges, allowing fluid to flow through the opening while maintaining separation between the two flanges.
Flanges are the connecting components on either side of the spade and spacer. These are standard flanges that follow industry specifications such as ANSI/ASME, DIN, JIS, or other relevant standards. Flanges provide the connection points for the spade and spacer components.
Bolts and nuts are used to secure the flanges and hold the entire assembly together. They pass through the bolt holes on the flanges and are tightened to create a secure and leak-free joint.
Gaskets are placed between the mating surfaces of the flanges to ensure a proper seal. They help prevent leakage and maintain the integrity of the joint. The type of gasket used depends on the specific requirements of the application, including factors such as pressure, temperature, and the nature of the fluid.
The flange facing is the surface of the flange that comes into contact with the gasket. It is typically machined to ensure a smooth and even mating surface, contributing to the effectiveness of the seal.
Fasteners, such as studs or bolts, are used to secure the spade and spacer components to the flanges. Properly torqued fasteners are crucial for maintaining the integrity of the joint.
In some cases, spade blind flanges may include lifting lugs for ease of handling and installation. These lugs provide attachment points for lifting equipment during the positioning of the spade and spacer.
Check ANSI/ASME B16.48 Spade Paddle Blind Flange Dimensions Download
Spade:
Spacer:
Key Differences:
