HG Blind Flanges

The formal title of blind disk is Flange cover, and some are moreover referred to as blind flange or pipe plug. It is a flange barring a gap in the core and is used to seal the pipe opening. The characteristic 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 not geared up to be opened again. There are many kinds of sealing surfaces, which consists of plane, convex, concave and convex surface, tenon and groove ground and ring connection surface. The elements are carbon steel, stainless steel, alloy steel, copper, aluminum, PVC and PPR.



From the show up of the blind plate, it is typically divided into plate kind flat blind plate, mom or father eight blind plate, plug board, and gasket ring (plug board and gasket ring are blind to every other). The blind plate performs the function of isolation and cutting, and the feature of the head, pipe cap and welding plug is the same. Due to its tremendous sealing performance, it is usually used as a dependable capacity of isolation for constructions that require entire isolation. A flat plate blind is a strong circle with a cope with that is used in constructions that are typically isolated. The figure-8 blind plate is unique like a figure-8, one quit is a blind plate, and the special supply up is a throttle ring, on the different 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 handy to use, when it desires to be isolated, the blind plate quit is used, and when regular operation is required, the throttle ring end is used, and it can in addition be used to fill the set up hole of the blind plate on the pipeline. Another attribute is that it is in reality marked and reachable to discover out the set up status.

Production process

Generally, there are 4 types: forging, casting and forging, medium plate cutting, and casting. Among them, the charge of forging merchandise is the highest, accompanied with the aid of the use of way of medium plates, and casting and forging is the lowest. Casting is the most most applicable process. The exquisite is right for forging and core plates, and the casting and forging are barely worse.

Where the blind plate is applied

1. In the different start-up practise stage, when the power take a appear at or tightness take a show up at of the pipeline can't be carried out at the equal time as the related gear (such as turbines, compressors, gasifiers, reactors, etc.), a blind plate have to be set at the connection between the gear and the pipeline.

2. When the system is stopped, if the pipeline is then once more in operation, a blind plate is set at the shut-off valve.

3. When the laptop is multi-series, the predominant pipeline from outdoor the boundary vicinity is divided into plenty of pipes to enter every series, and a plate is set at the shut-off valve of every sub-pipeline.

4. When the devices wish to be usually maintained, inspected or switched with every other, and the gear concerned wants to be besides a doubt isolated, a blind plate is set at the shut-off valve.

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

6. If the technique medium wants to be targeted in a unified series system, a blind plate have to be set up in the lower back of the shut-off valve.

7. The exhaust pipe, liquid discharge pipe and sampling pipe of gear and pipeline choose to be furnished with blind plate or plug in the again of the valve. Except for assets that are non-toxic, non-hazardous to fitness and non-explosive hazards.

8. When the desktop is built in stages, the interconnected pipelines are set up at the shut-off valve to facilitate the subsequent setting up of the project.

9. When the computing device is in everyday production, some auxiliary pipelines that decide upon to be without a doubt restrict off ought to typically be set up with blind plates.