Pipe Blind Flanges
Meets ASME B16.47 & B16.48 / ANSI B16.5 & B16.2 standards. We will also customize our Blind Flanges to meet your specific requirements.
We have many carbon steel and stainless steel Blind Flanges, or steel end-caps, in various sizes and ASME ratings in stock. Additionally, we can manufacture your metal pipe flanges in any available alloy upon request. We can coat our carbon steel products with various options to prevent rust. These options include flat black paint, galvanized coating, zinc plating, and yellow zinc chromate plating. Customers can request any of these coatings for their products.
ASME BLIND FLANGE STANDARD PRODUCT FEATURES:
- Stocked sizes: 1/2" - 96"
- Custom flanges made to your specifications
- ASME Pressure Ratings: 150#, 300#, 600#, 900#, 1500#, & 2500#
- Options for Raised Face or RTJ surfaces
- Materials include Carbon Steel & Stainless Steel
- Coatings available: Galvanized and Zinc Plated
- Vent connection options: Socket Weld and NPT
- Meets ASME B16.47 & B16.48/ANSI B16.5 and B16.2 specs
- Same day ship/delivery available in Texas and Louisiana
Blind Flange 3D Product Rotation
Looking for a blind flange with a handle?
How about a blind flange
with a pressure valve?
Or a Top Hat Blind Flange
Pipe Support with Lifting Lugs?
BLIND FLANGE PRODUCT USES
Blind flanges are considered pipe fittings. Blind flanges are typically used to block off a section of piping or a nozzle on a vessel that is not being used. They are similar in function to pipe plugs in that they close off the end of a pipe or vessel; notwithstanding, blind flanges are typically used in larger applications where a flange connection is necessary. Blind flanges are bolted onto the end of the pipe or vessel using bolts and provide a solid, leak-proof closure. Like other pipe fittings, blind flanges are integral components in piping systems for various industrial applications.
PRIMARY USES
One of the primary purposes of a blind flange is to facilitate maintenance, repairs, or inspections within a piping system. By affixing a blind flange to the end of a pipeline or vessel, operators can isolate sections of the system for maintenance activities without needing to shut down the entire system. This ability to isolate specific segments of a piping system enhances operational efficiency and minimizes downtime.
In addition to their primary function of sealing off pipelines or vessels, a blind flange can also be used for pressure testing, where it serves as a temporary closure during hydrostatic or pneumatic tests to assess the integrity of the system. It is also utilized in scenarios where the end of a pipeline or vessel needs to be sealed permanently, such as during decommissioning or abandonment of facilities.
These flanges are often used in conjunction with other components such as valves, fittings, and piping systems in industries ranging from oil and gas to chemical processing, power generation, and water treatment.
SPECIFICATIONS
Typically, we provide our ANSI flanges with raised face or Ring Type Joint (RTJ) facing. Our standard height is 1/16" for pipe caps under ASME rating 400#. For flanges of 400# and up, the standard raised face height is 1/4."
Need a blind flange with ports? Choose from middle, top, or bottom ports, and socket weld or NPT vent connections.
USA-Blind-Flange-Illustration
Pipe Schedule Chart Link
Blind Thickness Chart Link
Carbon vs. Stainless Link
Frequently Asked Questions
No. Blind flanges are used to "close off" the line when bolted to a flange, which is welded to a pipe, heat exchanger, vessel, etc...
Yes. We will custom manufacture or modify any of our products to meet your needs.
Yes. We can produce our products to any custom specification.
This only applies for line sizes greater than 24". Call us and we'll be happy to help you determine the correct spec.
Yes, just let us know if you want the lifting lug on the flat face of the blind flange (typically used when the flange is in a horizontal plane) or on the outer edge (typically used when installing in a vertical plane).
The most common material is A105 grade carbon steel, however we can produce our blinds in any material, grade or alloy you require.
Yes, we can supply the nuts, bolts, and gaskets if you need them.
Yes, we can provide your flange with one or more vents. Vents are available in the middle, top, or bottom of your flange and with socketweld or NPT vent connections.