Balloon 22/180 cm with metal valve

Closed SMB 22/180 cm with OPR Valve and Metal Oral Valve

This closed-type SMB (Surface Marker Buoy) is a professional signaling device designed for technical diving and advanced recreational diving. Thanks to its sealed structure, it maintains maximum pressure and visibility on the surface in all sea and weather conditions.

Main Technical Features

• Closed Circuit Design: Unlike open models, this SMB is completely sealed. Once inflated, air cannot escape from the base, ensuring the buoy remains taut and vertical even if it falls on the water surface or if the diver slackens the line tension.
• High Visibility Dimensions: With a length of 180 cm and a width of 22 cm, it offers significant volume, ensuring excellent visibility even in high waves or at long distances.
• Metal Oral Valve: Equipped with a push-button inflation valve made of durable metal. This component allows the SMB to be inflated by mouth or via the BCD/dry suit hose (quick connector), offering superior durability compared to common plastic valves.
• Over-Pressure Relief (OPR) Valve: Includes an integrated Over-Pressure Relief valve. This valve automatically releases excess air during ascent (caused by gas expansion) to prevent the SMB's seams from bursting and allows for rapid deflation post-dive via the manual pull cord.

Materials and Construction

• High-Strength Nylon: Made of coated 210D Nylon, resistant to abrasion and UV rays.
• Fluorescent Orange Color: Chosen for maximum daytime visibility and to comply with international diving signaling standards.
• Attachment D-Ring: The base is equipped with a robust stainless steel "D" ring for secure attachment of the reel or spool line.
• Reflective Band (SOLAS): Often equipped with reflective strips on the upper part to facilitate night detection using torches or searchlights.

Operational Advantages

• Stability: The generous volume and cylindrical shape offer significant hydrostatic lift, also useful as a buoyant support in case of emergency.
• Reliability: The closed-circuit system prevents internal flooding of the SMB, maintaining constant trim.
• Ease of Use: The metal valve can be easily operated even with thick dry or neoprene gloves.

Safety Note: Given its height of 180 cm, this SMB exerts considerable pull during inflation at depth. It is recommended for use in conjunction with an appropriate reel or spool.