ONIS D3B - Manufax

Onis D3B

By adminIn Onis, ONIS D3BPosted October 21, 2025

Outperform DBB & Reduce human factor – No risk to open the pipe under pressure. The Onis Double Block Bleed and Blind (D3B) is a complete positive isolation solution in one device, including one upstream valve, one quick action line blind, and one downstream valve. The mechanical safety interlock between the Line Blind and the valves prevents any operation of the Line Blind if the valves remain open, thereby eliminating the risk of operating under pressure. This patented safety device was designed to eliminate operational risks associated with human factors in congested areas and critical applications.

The Double Block Bleed and Blind is an enhanced version of our Quick Action Line Blind. It offers comprehensive positive isolation in a single device, designed to mitigate human factor risks through a structured operational sequence.