Pipe Blind Flanges / End Caps
Meets ASME B16.47 & B16.48 / ANSI B16.5 & B16.2 standards. We will also customize our steel end caps to meet your specific requirements.
ASME BLIND FLANGE STANDARD PRODUCT FEATURES:
- Available Line Sizes: 1/2" - 96"
- ASME Pressure Ratings: 150#, 300#, 600#, 900#, 1500#, & 2500#
- Options for Raised Face, Flat Face, and Ring Type Joint (RTJ) faces
- Stocked in 516 - Gr70 carbon steel and 304/316 stainless steels; can supply any alloy
- Coatings available: galvanized, zinc plated, and yellow zinc chromate
- Vent or port connection options: Socket Weld and NPT
- Meets ASME B16.47 & B16.48/ANSI B16.5 and B16.2 specs
- Custom high pressure flanges made to your 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 USES
A blind flange is considered a pipe fitting, and is typically used to block off a section of piping or a nozzle on a vessel that is not being used. It is similar in function to a pipe plug in that it closes off the end of a pipe or vessel; notwithstanding, a blind flange is typically used in larger applications where a high pressure flange connection is necessary. A blind flange is bolted onto the end of the pipe or vessel using bolts and provide a solid, leak-proof closure. Like other pipe fittings, blind flanges, or end caps, 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.
Pipe Schedule 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.