Differences between RF and RTJ blind flanges in Russian client order

Haihao Group recently received a custom order from a Russian client that included two types of blind flanges: ASME B16.5 RF blind flange 150# and ASME B16.5 RTJ blind flange 2500#. While both products serve the primary function of sealing the end of a pipeline, their designs, pressure ratings, and applications differ significantly.

A105 Blind Flange

A105 Blind Flange

Raised Face (RF) Blind Flange – 150#

The RF blind flange features a raised face around the sealing surface, which creates a small contact area to enhance the sealing performance when paired with a gasket. This type of flange is commonly used in systems where moderate pressure and temperature conditions are present. The 150# pressure rating makes it suitable for pipelines operating at relatively lower pressures. The simplicity of its design and compatibility with various types of gaskets make RF flanges a versatile and cost-effective choice for general industrial applications.

ASME B16.5 RTJ A182 F22 CL.1 blind flange

ASME B16.5 RTJ A182 F22 CL.1 blind flange

Ring Type Joint (RTJ) Blind Flange – 2500#

In contrast, the RTJ blind flange incorporates a precision-machined groove on its sealing surface, designed to hold a metal ring gasket. When tightened, the ring gasket deforms slightly to create a metal-to-metal seal, ensuring superior leak resistance even under extreme pressure and temperature conditions. The 2500# pressure rating makes this flange ideal for critical applications in high-pressure environments, such as oil and gas or petrochemical industries. RTJ flanges are typically used in demanding scenarios where sealing reliability and safety are paramount.

Differences between RF and RTJ blind flanges:

1.Sealing Mechanism:

RF flanges rely on a soft gasket compressed between the raised face surfaces.

RTJ flanges use a metal ring gasket for a metal-to-metal seal.

2.Pressure Rating:

RF flanges are suitable for lower-pressure systems (150# in this case).

RTJ flanges handle significantly higher pressures (2500#).

3.Application:

RF flanges are commonly used in general industrial and low-pressure applications.

RTJ flanges are preferred in high-pressure, high-temperature, and critical operations, especially in the oil and gas industry.

This order showcases Haihao Group’s ability to supply a wide range of flanges tailored to meet diverse application requirements. Whether it’s the versatility of RF blind flanges or the exceptional sealing performance of RTJ blind flanges, Haihao ensures that each product meets stringent international standards and fulfills the specific needs of our clients. For more information about our flange offerings and custom solutions, feel free to contact Haihao Group. Email:sales@haihaogroup.com

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