BLIND FLANGE 3" 300# RF SERRATED SPIRAL FINISH A105N ASME B16.5

Introduction of BLIND FLANGE 3" 300# RF SERRATED SPIRAL FINISH A105N ASME B16.5

Blind flange. It is a flange without a hole in the middle, used to seal pipeline openings. The function of the blind flange seal is the same as that of the head and pipe cap, except that the blind flange seal is a detachable sealing device, and the seal of the head is not intended to be opened again. There are various forms of sealing surfaces, including FF, RF, M/F, RTJ etc connection surfaces.

Blind flange are mainly used to completely isolate the production medium, preventing production from being affected or even causing accidents due to poorly closed shut-off valves. Blind flange should be installed at locations that require isolation, such as equipment connection ports, before and after shut-off valves, or between two flanges. It is often recommended to use an 8-shaped blind plate; Insert flange (circular blind flange) can also be used for pressing, blowing, and other disposable parts

Production process of BLIND FLANGE 3" 300# RF SERRATED SPIRAL FINISH A105N ASME B16.5

There are generally four types: forging, casting and forging, medium plate cutting, and casting. Among them, forged products have the highest prices, followed by medium plates, and cast and forged products have the lowest prices. Casting is the second most advanced process. And the quality is better for forging and medium plate, slightly worse for casting and forging.

Precautions
1. Minimize the number of blind flange as much as possible while meeting the process requirements.
2. The blind blind flange set must indicate whether it can be opened or closed normally.
3. The location of the blind blind flange should be determined based on the cutting effect, safety, and process requirements, whether it is located upstream or downstream of the shut-off valve.