{"id":8936,"date":"2018-10-25T13:50:32","date_gmt":"2018-10-25T10:50:32","guid":{"rendered":"https:\/\/valve.tr\/double-block-and-bleed-dbb-ball-valves\/"},"modified":"2025-05-12T14:11:58","modified_gmt":"2025-05-12T11:11:58","slug":"double-block-and-bleed-dbb-ball-valves","status":"publish","type":"page","link":"https:\/\/valve.tr\/en\/double-block-and-bleed-dbb-ball-valves\/","title":{"rendered":"Double Block and Bleed (DBB) Ball Valves"},"content":{"rendered":"[vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_spacing=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”2\/3″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text]\n\n\n\n\n\n\n\n\n
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Ingredients :<\/p>\n<\/td>\n

Steel, Stainless Steel, Monel, Hastelloy, Duplex, Super Duplex, Other <\/span><\/td>\n<\/tr>\n
\n

Connection :<\/p>\n<\/td>\n

Flanged, Welded<\/span><\/td>\n<\/tr>\n
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Drive Unit :<\/p>\n<\/td>\n

Manual, Electric, Pneumatic, Hydraulic<\/span><\/td>\n<\/tr>\n
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Temperature :<\/p>\n<\/td>\n

(-200 \u00b0C) – (+550 \u00b0C)<\/span><\/td>\n<\/tr>\n
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Nominal Diameter :<\/p>\n<\/td>\n

3\/4″ – 24″<\/span><\/td>\n<\/tr>\n
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Rated Pressure:<\/p>\n<\/td>\n

Class 150 – 2500<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/h3>\n[\/vc_column_text][\/vc_column][vc_column column_padding=”padding-1-percent” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_spacing=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/3″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_spacing=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text]\n

Double Ball \/ DB&B Plug Valves<\/strong><\/h2>\n

Double Ball and DB&B (Double Block & Bleed) plug valves are specially designed valves that provide high sealing and safety in industrial fluid systems. DB&B plug valves<\/strong> offer zero leakage and reliable flow control in pipelines thanks to their double blocking and bleed mechanism. These valves are especially preferred in the petroleum, natural gas and chemical industries to ensure safe flow control under high pressure and temperature conditions. Double ball valves provide double blocking with two independent ball closing mechanisms, increasing isolation in the system and making maintenance processes safer. <\/p>\n

One of the biggest advantages of these valves is the ease of maintenance and testing. DB&B plug valves<\/strong> allow safe intervention on the line as they provide full isolation in the system. Double ball valves, on the other hand, increase operational efficiency thanks to their low torque requirement and compact design, while offering long-lasting use by being manufactured from materials resistant to abrasive and corrosive fluids. Thanks to these features, they stand out as a reliable and sustainable flow control solution in critical industrial applications. <\/p>\n

Single Spherical Trunnion DB&B<\/strong><\/h2>\n

Single ball Trunnion Double Block & Bleed (DB&B) <\/strong>valves are specially designed valves that provide high safety and sealing in industrial fluid systems. The trunnion assisted<\/strong> design stabilizes the movement of the ball valve, providing reliable flow control even under high pressure. The DB&B feature provides independent sealing on both sides of the valve, allowing double blocking and safe discharge of the fluid in the middle. This is a great advantage in critical applications requiring line isolation, especially in the oil, gas and chemical industries. <\/p>\n

Single ball Trunnion DB&B valves<\/strong> require less torque than conventional valves and are manufactured from wear-resistant materials, ensuring a long service life. At the same time, the bleed mechanism simplifies<\/strong> maintenance and makes testing and safety procedures more efficient. Frequently used in power plants, refineries and pipelines, these valves minimize operational risks by providing maximum reliability even under high pressure and temperature. <\/p>\n

DBB Valves <\/strong><\/h2>\n

What is Double Block and Bleed?<\/strong><\/h3>\n

Double Block and Bleed (DB&B) <\/strong>is a special valve design used to provide fluid isolation in industrial pipelines. DB&B valves<\/strong> have two independent blocking mechanisms, allowing fluid to be completely shut off from both directions and bleed the area in between. This design increases safety and prevents leaks in the system in applications requiring complete isolation along the line. Widely used especially in the oil, gas, chemical and energy sectors, DB&B valves <\/strong>provide a safe working environment during maintenance and testing operations. <\/p>\n

One of the major advantages of these valves is that they provide a two-way seal<\/strong>, minimizing operational risks. The bleed port ensures<\/strong> that any remaining fluid in the isolated zone is completely drained and allows for safe maintenance on the line. DB&B valves can be available in different designs such as double ball,<\/strong> single ball and plug, facilitating testing and verification processes in pressurized systems. It is considered an indispensable component in critical industrial applications as it provides maximum safety and sealing<\/strong> under high pressure and temperature. <\/p>\n

DB&B Valve Additional Advantage<\/strong><\/h3>\n

Double Block & Bleed (DB&B) valves<\/strong> not only provide highly reliable flow control, but also offer significant benefits to industrial systems by optimizing operational efficiency and maintenance processes. One of the biggest additional advantages of these valves is their compact design with a small footprint.<\/strong> The double blocking and draining operation provided by using two separate valves in conventional systems is combined in a single body in DB&B valves. This simplifies the installation process and provides flexibility in system design as it takes up less space in the plant. It makes engineering solutions more efficient by offering the advantage of fast integration and low weight,<\/strong> especially in installations in tight spaces. <\/p>\n

Another additional advantage of DB&B valves is that they simplify maintenance and testing processes<\/strong>. Compared to standard valves, the DB&B mechanism provides more secure line isolation and allows for complete<\/strong> draining of the fluid during maintenance. Thanks to the bleed port, the remaining fluid can be safely drained, making it easier for operators or maintenance teams to intervene. This feature enables quick response in emergency situations, testing<\/strong> for leaks and effective implementation of safety procedures. For this reason, DB&B valves are widely preferred in industries such as oil, gas, chemical and power plant where high safety is required<\/strong>. <\/p>\n

Double Block & Bleed – Trunnion Tipi<\/strong><\/h2>\n

Double Block & Bleed (DB&B) – Trunnion type valves<\/strong> are special ball valves designed to provide maximum sealing and safety, especially in high pressure systems. The trunnion supported <\/strong>design allows the ball element to be fixed at specific points, ensuring stable operation even under high pressure. Compared to conventional free floating ball valves, trunnion type valves require less torque, which allows operators to maintain easier control while extending service life. Double blocking ensures<\/strong> isolation by completely cutting off the inlet and outlet flow, while the bleed port allows<\/strong> safe draining of the fluid inside the valve. <\/p>\n

These valves are widely used in industries requiring high safety, such as oil and gas pipelines, refineries, chemical plants and power plants<\/strong>. The trunnion assisted mechanism<\/strong> allows the sealing elements to balance the pressure, preventing wear and leakage, thus minimizing maintenance requirements. Furthermore, DB&B – Trunnion type valves<\/strong> can be manufactured with fire-safe, anti-static and explosion-proof properties, maximizing safety standards in critical operations. Increasing operational efficiency in industrial plants, <\/strong>these valves offer an ideal solution for businesses by providing cost <\/strong>savings thanks to their long-lasting structure and high performance. [\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”full_width_background” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” bg_color=”#f7f7f7″ scene_position=”center” top_padding=”100″ bottom_padding=”100″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_spacing=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text]\n

Frequently Asked Questions<\/h2>\n[\/vc_column_text][toggles style=”minimal”][toggle color=”Default” title=”What is DB&B Valve?”][vc_column_text]The DB&B (Double Block & Bleed) valve <\/strong>is a specially designed valve with double blocking that allows the fluid to be completely shut off from both directions and allows the fluid in the intermediate zone to be evacuated. It is widely used in the oil, gas and chemical industries, improving safety in applications requiring high tightness.[\/vc_column_text][\/toggle][toggle color=”Default” title=”What are the application areas of DB&B valves?”][vc_column_text]DB&B valves<\/strong> are used in industrial applications that require high safety and tightness, such as oil and gas pipelines, chemical plants, refineries and power plants. They increase operational safety by providing reliable flow control, especially in maintenance, testing and isolation processes.[\/vc_column_text][\/toggle][toggle color=”Default” title=”What are the advantages of using DB&B Valves?”][vc_column_text]DB&B valves<\/strong> provide high tightness thanks to their double blocking and draining mechanism, enabling safe maintenance and isolation. With its compact design, it occupies less space, increases energy efficiency and reduces operational costs.[\/vc_column_text][\/toggle][toggle color=”Default” title=”What is the difference between DB&B Floating Ball valve and DB&B Trunnion ball valve?”][vc_column_text]DB&B Floating ball valve <\/strong>is a type of valve suitable for smaller diameter and low pressure applications where the sphere moves with the flow pressure and seals. DB&B Trunnion ball valve<\/strong>, on the other hand, is a durable solution where the sphere is fixed at certain points, which is more stable in high pressure systems and operates with low torque requirements.[\/vc_column_text][\/toggle][\/toggles][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_spacing=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"

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