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Spectacle Blinds, Spades and Spacers
What Are Spectacle Blinds, Spades, and Spacers?
Spectacle blind fittings, spades, and spacers are mechanical devices used to isolate or bypass sections of a pipeline. Though they may look alike, they serve different purposes and are used in different situations.
Spectacle Blinds: These consist of two linked metal plates, one of which is solid and the other is ring-shaped. They are rotated to block or allow the flow of fluid.
Spades: A spade is a solid circular plate used to cut off the flow of fluid in a pipeline. It is typically used when the line must be completely closed.
Spacers: Spacer is a ring-shaped plate used where the line should not be isolated and fluid flow can be allowed through it.
Types of Spectacle Blinds for Piping Systems:
Spectacle blinds for piping systems are usually offered in three face types:
- Raised Face (RF): For high-pressure applications
- Flat Face (FF): For low-pressure systems
- Ring-Joint Blanks: For use with ring-joint gaskets for better sealing in high-pressure or high-temperature service
Manufacturing of Spectacle Blinds, Spades, and Spacers
The manufacturing of spectacle blinds, spades, and spacers is initiated by selecting the material; then the elements are cut to size and formed correctly. Spectacle blinds are essentially two discs-one being solid and one a ring, while spades and spacers are flat plates designed to sit between flanges. The process continues with forging, after which precise drilling and surface finishing increase the probability of withstanding the required time or conditions without corrosion, then adding a layer of strength to the component through heat treatment. Finally, they are carefully packaged and shipped to meet industrial performance requirements.
Applications of Spectacle Blinds, Spades, and Spacers
- Safety and Emergency Shutdowns: Employing spectacle blinds for oil and gas industry is crucial where the integrity of the pipeline matters.
- Bypass Lines: Spacers often are incorporated within bypass lines which allow fluids in the system to keep on moving while the parts are under repair or changed.
- Double Isolation: In high-pressure systems, where double isolation is often necessary for safety, spectacle blinds can be used to completely shut off a section of the line.
Advantages of Spectacle Blinds, Spades, and Spacers
1. Lower Maintenance Costs.
Spectacle blinds, spades, and spacers are less prone to major overhauls when compared with the valves, in that they tend to have fewer moving parts which consequently spend very minimal time stalling and in repair.
2. Ease of Application:
The given components above are easy to install and replace with minimal use of technical tools or training.
3. Flexibility:
This equipment offers flexibility in pipe isolation. It allows quick and safe switching between isolation and flow maintenance.
Quality Assurance Up to International Standards
Our branch fittings are manufactured to meet the highest quality standards, ensuring reliability and performance in demanding environments.
- ASTM Standards: ASTM A182, ASTM A240
- ANSI Standards: API 590
Our Stock Range
- Duplex Stainless Steel
- Super Duplex Stainless Steel
- Nickel Alloys
- Stainless Steel (316L, 304L, etc.)
- 6% Molybdenum Steel
Blinds, Spades, and Spacers Procurement from Hatco
At Hatco, we supply a wide range of spectacle blinds, spades, and spacers in various materials and sizes. This ensures you have the appropriate tools for your job. Call us today to find out more or to place an order for your project needs.