BS4504 Blind Flanges

The formal title of blind disk is Flange cover, and some are in addition referred to as blind flange or pipe plug. It is a flange barring a hole in the core and is used to seal the pipe opening. The attribute is the equal as that of the head and cap, barring that the blind seal is a detachable sealing device, and the seal of the head is now now now now not geared up to be opened again. There are many types of sealing surfaces, which consists of plane, convex, concave and convex surface, tenon and groove floor and ring connection surface. The factors are carbon steel, stainless steel, alloy steel, copper, aluminum, PVC and PPR.

From the exhibit up of the blind plate, it is usually divided into plate type flat blind plate, mother or father eight blind plate, plug board, and gasket ring (plug board and gasket ring are blind to each other). The blind plate performs the characteristic of isolation and cutting, and the function of the head, pipe cap and welding plug is the same. Due to its brilliant sealing performance, it is generally used as a reliable potential of isolation for constructions that require whole isolation. A flat plate blind is a sturdy circle with a cope with that is used in constructions that are usually isolated. The figure-8 blind plate is special like a figure-8, one give up is a blind plate, and the extraordinary provide up is a throttle ring, on the unique hand the diameter is the equal as the diameter of the pipe, and it does no longer play a throttling role. The figure-8 blind plate is reachable to use, when it wishes to be isolated, the blind plate cease is used, and when everyday operation is required, the throttle ring stop is used, and it can in addition be used to fill the set up gap of the blind plate on the pipeline. Another attribute is that it is in actuality marked and reachable to find out out the set up status.

Production process

Generally, there are four types: forging, casting and forging, medium plate cutting, and casting. Among them, the cost of forging merchandise is the highest, accompanied with the resource of the use of way of medium plates, and casting and forging is the lowest. Casting is the most most relevant process. The top notch is proper for forging and core plates, and the casting and forging are barely worse.

Where the blind plate is applied

1. In the specific start-up practise stage, when the energy take a show up at or tightness take a exhibit up at of the pipeline can not be carried out at the equal time as the associated tools (such as turbines, compressors, gasifiers, reactors, etc.), a blind plate have to be set at the connection between the tools and the pipeline.

2. When the gadget is stopped, if the pipeline is then as soon as extra in operation, a blind plate is set at the shut-off valve.

3. When the laptop computer is multi-series, the predominant pipeline from out of doors the boundary neighborhood is divided into lots of pipes to enter each and every series, and a plate is set at the shut-off valve of each sub-pipeline.

4. When the gadgets want to be typically maintained, inspected or switched with each and every other, and the tools worried wishes to be barring a doubt isolated, a blind plate is set at the shut-off valve.

5. When the approach pipeline of the pressurized pipeline and the displacement gasoline pipeline (such as nitrogen pipeline and compressed air pipeline) is associated to the equipment, a plate is set at the shut-off valve.

6. If the approach medium needs to be focused in a unified collection system, a blind plate have to be set up in the decrease again of the shut-off valve.

7. The exhaust pipe, liquid discharge pipe and sampling pipe of tools and pipeline pick to be furnished with blind plate or plug in the once more of the valve. Except for belongings that are non-toxic, non-hazardous to health and non-explosive hazards.

8. When the computer is constructed in stages, the interconnected pipelines are set up at the shut-off valve to facilitate the subsequent putting up of the project.

9. When the computing system is in daily production, some auxiliary pipelines that figure out upon to be barring a doubt preclude off ought to usually be set up with blind plates.