Blind Flange with Threaded Hole

A blind flange with threaded hole, also known as blind tapped flange, is a specialized type of flange. It is a solid disk with no central opening for fluid passage, but features threaded holes, usually NPT (National Pipe Thread) holes. These threaded holes allow for the attachment of pressure test connections or other components. It's mainly used to seal the end of a pipe, valve, or pressure vessel opening, blocking fluid flow. Made from materials like carbon steel, stainless steel or aluminum, it can withstand high stress, offering convenience for pipeline maintenance and future modifications. Its sealing faces can be flat, raised or of other types to suit different application requirements.

Easy Installation and Maintenance: Threaded blind flanges are simple to install and remove without the need for welding equipment, which is very convenient in some cases where welding is not possible or not preferred, such as in field operations or when dealing with pipelines that require frequent disassembly and assembly.
 

Good Sealing Performance: When properly installed with suitable gaskets, they can provide a reliable seal to prevent leakage of fluids or gases in the pipeline, ensuring the safety and normal operation of the system.
 

High Pressure Resistance: Made of high-strength materials, threaded blind flanges can withstand high pressures in the pipeline and are suitable for use in high-pressure environments.
 

Good Versatility: They can be adapted to different pipe diameters and pressure requirements by selecting different specifications of threaded blind flanges, and are suitable for various types of pipelines, including those transporting water, oil, gas, and chemical media.
 

No Flow Obstruction When Not in Use: As a blind flange, it completely blocks the pipeline when in use, and when removed, there is no obstruction in the pipeline, which has no impact on the normal flow of the medium in the pipeline.

Flat Face Threaded Blind Flange: It has a flat sealing surface, which is suitable for low-pressure applications and systems that require an even seal. It is usually used with a flat gasket and is easy to install and has good sealing performance under low-pressure conditions.
 

Raised Face Threaded Blind Flange: The sealing surface has a slightly raised part in the middle, which can increase the contact area and pressure with the gasket, enhance the sealing effect, and is suitable for medium-pressure applications.
 

Ring Type Joint Threaded Blind Flange: Utilizes a grooved ring for sealing, which is mainly used in high-pressure and high-temperature applications, providing a more durable and leak-resistant seal.

Pressure Testing: Threaded blind flanges are often used to seal the ends of pipelines during pressure testing to ensure the accuracy and safety of the test.
Pipeline Isolation: They can isolate specific sections of the pipeline for maintenance, repair, or replacement of equipment, preventing the leakage of media in the pipeline and facilitating construction operations.
Temporary Closure: When a pipeline is temporarily out of use, such as during system upgrades or seasonal shutdowns, threaded blind flanges can be used to seal the pipeline ends to prevent the entry of foreign matter.
Instrumentation and Inspection Ports: They can be used as access points for installing measurement instruments such as pressure gauges and thermometers and for pipeline inspection and maintenance.

Carbon Steel: It has high strength and good toughness, can withstand high pressure and temperature, and has good corrosion resistance in some environments. It is widely used in general industrial pipelines, such as those in the oil and gas and water treatment industries.
 

Stainless Steel: It has excellent corrosion resistance, high temperature resistance, and oxidation resistance, and is suitable for pipelines transporting corrosive media, such as in the chemical and food processing industries. Common types include 304, 316, 304L, and 316L.
 

Alloy Steel: It has higher strength and heat resistance than carbon steel and can meet the requirements of high-pressure, high-temperature, and high-strength applications. It is often used in some high-end industrial fields, such as the aerospace and nuclear power industries.
 

Plastic: It has the advantages of corrosion resistance, light weight, and low cost, and is suitable for some low-pressure pipelines transporting non-corrosive media, such as in the water supply and drainage and irrigation industries. Commonly used plastics include PVC, PPR, and PE.

Hot Tags: blind flange with threaded hole, China blind flange with threaded hole manufacturers, suppliers, factory, Long Weld Neck Flange, Socket Flange, Ss Weld Neck Flange, Stainless Steel Socket Weld Flange, Weld Neck Flange Welding, Weld Neck Pipe Flange