All You Need to Know About Spectacle Blinds
Spectacle Blind
Spectacle blinds are designed to provide positive isolation from process fluids. Its installation is usually in conjunction with a block and bleed valve assembly. The blind and the ring must be of the same thickness to provide positive isolation. This ensures proper blanking off of equipment.
The spectacle blind can be adjusted by rotating the plate and loosening the surrounding bolts. Spectacle blinds can be used on various types of processing and storage vessels. They can also be installed on static equipment or rotary equipment. The only difference between a spectacle blind and a spacer is the installation method. During installation, it is important to consider the weight of the blind and its position in the pipeline.
Spectacle blind is made of two components: the blind and the spacer. The former allows the flow of fluids while the latter is used to isolate the flow. The spectacle blind can be installed in one or more pipelines. It is typically used in conjunction with stand-alone spades to reduce stress levels when piping pipelines are in close proximity.
Spectacle blinds should be made of a suitable material, such as alloy steel or carbon steel. They should be compatible with flanges of the same material.
Uses of Spectacle Blind Flange
The flange on spectacle blinds is used to prevent leaks during maintenance. The flow can be diverted to other equipment, but it cannot be diverted around the spectacle blind itself, as it would compromise the safety function of the blind. It is important to valve off and relieve pressure before swinging the spectacle blind. The spectacle blind is heavy and requires a spacer to prevent leakage.
Spectacle blind flange is manufactured according to specifications, usually a plate or a forging. They have the same chemical composition as their mating flanges, and the sealing surface is chosen to match the flange finish.
Pipeline flanges are crucial parts of pipeline installations. Titan manufactures spectacle blind flanges made of stainless steel or carbon steel, and offers a variety of standard dimensions. Custom fabrication is also available for specific applications.
Spectacle blinds are usually made of steel plates, which are interconnected by a spacer. This allows the blind to be easily adjusted. The spacer can be rotated into the pipe gap, making it perfect for installations involving frequent pipeline and equipment shutoffs. Its solid end is insulated to prevent fluid from leaking, and the flange can be rotated 180 degrees to close or open the fluid flow.
