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| Categories | Alloy Steel Flanges |
|---|---|
| Brand Name: | TOBO |
| Model Number: | Alloy Steel Flanges |
| Certification: | ISO/TUV/SGS |
| Place of Origin: | Shanghai, China |
| MOQ: | 1 pcs |
| Price: | Negotiation |
| Payment Terms: | MoneyGram, MoneyGram, Western Union, T/T, D/A, L/C, D/P |
| Supply Ability: | 10000Pcs/month |
| Delivery Time: | 15-25days |
| Packaging Details: | the wooden case |
| Product Name: | Spade flange |
| Tolerance: | ±1% |
| Material: | Alloy Steel |
| Thickness: | SCH40S |
| Surface: | Customered |
| Model Nomber: | Hastelloy C276 |
| Pressure: | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Payment Term: | T/T or others |
| Color: | or as required |
| Thread: | BSPP BSPT NPT METRIC |
| Head Code: | Round |
| Sizerange: | 1/2 inch to 48 inch |
| Form: | Loose Flange |
| Mechanicalproperties: | High tensile strength, good toughness |
| Corrosionresistance: | High |
| Material Grade: | Alloy 825 |
| Company Info. |
| TOBO STEEL GROUP CHINA |
| Verified Supplier |
| View Contact Details |
| Product List |
Isolation Zero Leakage Spade flange ASMEB16.5 DN80 Class150
A Spade Flange is a specific type of flow control and isolation device used in piping systems, typically employed in conjunction with a Spacer Flange or Ring. This setup functions as a single assembly to either block or allow flow.
The Spade: This is a solid, flat metal disc with a handle, resembling a spade, that is inserted between two standard flanges to completely block the pipeline and stop flow.
The Spacer (or Ring): This is a matching metal ring with the same outer diameter and bolt holes as the spade, but with a center hole that matches the pipe's inner diameter. It is inserted in the same location to allow flow to pass through normally.
The spade and spacer are used alternately to switch a section of the pipe between operational and isolated states. This system is highly valued for providing a leak-proof seal when isolation is required and is a critical safety component in many industries.
The design and manufacturing of spade flanges adhere to various international standards and material specifications. Key parameters include:
| Parameter | Details & Examples |
|---|---|
| Pressure Ratings (Class) | Common ratings include Class 150, Class 300, and Class 600. |
| Size Range | Available in a wide range of diameters, with common sizes like 18 inches and other standard pipe diameters such as DN80. |
| Materials | Commonly made from carbon steel (e.g., ASTM A350 LF2), stainless steel (e.g., SS304, SS316), and other alloys to match pipeline requirements. |
| Standards | Conforms to various standards such as ASTM and BS (British Standard), which define dimensions and pressure-temperature ratings. |
Spade flanges are critical for maintenance, safety, and flow control in numerous industries where positive isolation of a pipeline section is necessary.
Positive Isolation for Safety and Maintenance: The primary use is to provide a secure, visible, and reliable barrier within a pipeline. This allows for the safe inspection, repair, or modification of downstream equipment like valves, pumps, and vessels without the need to drain the entire system. The solid spade ensures zero leakage across the isolated section, which is crucial for safety during maintenance.
Flow Control and System Configuration: The spade-and-spacer system allows operators to easily change the status of a pipeline. By inserting the spacer ring, the line is open for normal operation. When isolation is needed, the spacer is swapped out for the solid spade. This is essential for redirecting flow, commissioning new sections, or decommissioning equipment.
Wide Industry Use: These components are versatile and found in demanding applications across:
Petrochemical & Oil Refining: For isolating sections of process lines during turnaround or emergency shutdowns.
Power Generation: To isolate sections in boiler feed water, steam, and other critical systems.
General Industry and Construction: Used in various mechanical systems for piping that requires reliable isolation.
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