The basic instruction and feature of Blind Flange

What is a Blind Flange?

A Blind Flange is a solid disk used to close the end of a pipe, valve, or pressure vessel opening. It is typically bolted to the flange of a pipe system and does not have a bore, meaning it does not allow fluid to pass through.

Basic Instructions for Use

Selection:

Choose the correct material (e.g., carbon steel, stainless steel, alloy).

Match the size and pressure rating with the pipe system (e.g., ANSI, ASME, DIN standards).

Installation:

Ensure flange faces are clean and aligned.

Insert a gasket between the mating surfaces to ensure a leak-proof seal.

Use appropriate bolts, washers, and torque specifications to secure the blind flange.

Inspection & Testing:

Perform hydrostatic or pressure testing after installation to verify integrity.

Regularly inspect for signs of corrosion, leakage, or damage.

Key Features of a Blind Flange

No Bore

Solid plate with no hole; used to stop flow.

High Pressure Capability

Designed to handle high-pressure environments.

Removable

Can be unbolted for access, cleaning, or system extension.

Material Variety

Available in steel, stainless steel, cast iron, plastic, and more.

Gasket Compatibility

Works with various gasket types (spiral wound, ring-type joint, etc.) for tight sealing.

Standard Sizes

Manufactured according to standards like ANSI/ASME B16.5, DIN, JIS, etc.

Common Applications

Pipeline isolation for maintenance or future expansion

Pressure testing of flow systems

End connections in pressure vessels or tanks

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