Description

Introduction of Bandlock

EMT Bandlock Closures provide for quick access to any pressure vessel, whether horizontal or vertical. Unlike other quick-opening closures, they can be opened and closed safely and quickly—any size unit can be opened or closed in less than a minute, with no special tools required.

EMT is a world leader in the manufacture of quick-opening closures. With over 20,000 units in use globally, our EMT Bandlock sets the standard in high-pressure application closures.

Bandlock’s design was considerably aided by computer-aided technologies. The main pressure-loaded parts were designed to be lightweight by applying finite element analytical techniques and strain gauge proof testing, all while following primary pressure vessel code criteria.

Bandlock Advantages

INTEGRATED SAFETY FEATURES
The EMT Bandlock is distinguished by its safety features, which were incorporated throughout the design and manufacturing processes. Within the mechanism, there is a manually operated pressure warning screw that ensures the door cannot be unlocked until the pressure inside the vessel is certified to have been released. Additional safety features, such as mechanical key interlocks, can be incorporated and linked to regulate valve operations. The locking band is constantly visible for ultimate safety assurance, meeting design code demands and allowing the operator to visually verify that the door is securely shut and closed.

DOOR
For horizontal use, the door is designed to pivot twice on hinges with self-lubricating bearings. The fastened positioning enables for wear adjustment and can be set up for right or left swing. A davit is incorporated for vertical installation, allowing the EMT Bandlock door to be lifted and relocated away from the hub. When the diameter of the door exceeds 30″, lifting eyebolts are commonly used in place of the davit, allowing the door to be raised apart.

COMPOSITION OF A SEAL
The standard seal is made of Nitrile material with an 80° shore hardness. Alternatives include Viton, HNBR, and materials resistant to explosive decompression. Depending on the elastomer, temperature compatibility ranges from -45°C to +210°C.

EXAMINATION HYDROSTATIC
While an individual closure hydrostatic test is normally performed as part of the final vessel inspection, it is optional.

UNIQUE SEAL WITH INTEGRATED ANTI-EXTRUSION SPRING
The carefully engineered servo-acting lip seal, which activates at zero pressure, generates a totally airtight seal. For safety and endurance, the seal is located in the door, away from the operational area, in both horizontal and vertical installations, and can be readily fitted without tools. The one-piece mold is available in a variety of elastomers and comes with a stainless steel spring to prevent extrusion and provide complete vacuum capability.

BUILDING MATERIALS
Forged steel hubs with forged or plate steel doors can be supplied to suit all global material criteria. Other materials can be made according to customer needs.

Bandlock’s Essential Characteristics

Rapid Access: Bandlock enables quick access to pressure vessels, boosting maintenance efficiency and saving downtime.
Horizontal or Vertical Operation: Horizontal or vertical operation: It is adaptable and may be used horizontally or vertically, making it suited for a wide range of applications.
Scalability: The Bandlock design by GD Engineering can be upscaled to meet very large diameter closures for various industrial needs.
Enhanced Safety: Quick-opening closures, such as Bandlock, are developed with safety in mind, ensuring secure and regulated access to pressure vessels.

Bandlock Applications

Quick-opening blind plates are widely used in equipment such as filters, tanks, filter separators, metering skids, cyclone separators, heat exchangers, and more in diverse areas such as natural gas, chemical, and metallurgy. These are horizontal and vertical pressure vessel devices that operate at high pressure, have a big volume, and must be opened and closed on a regular basis. Oil, gas, water, and non-corrosive chemical raw materials are all appropriate mediums (highly corrosive mediums should be processed with other materials such as stainless steel). The temperature range is -40°C to 100°C.