DBL11 Full Bore Ball Valve 3 Pieces
Devinsan offers premium flow control solutions engineered for reliable isolation, zero pressure drop, and superior field serviceability in complex piping systems. Designed for maximum hydraulic performance and rapid repair, these DBL11 Full Bore Ball Valve 3 Pieces units utilize a multi-piece body structure to meet the critical demands of modern petrochemical and high-purity process applications.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Design
Face to Face
Connection
Coating
Testing
DN 25 – DN 200
PN 6-PN 10-PN 16-PN 25-PN 40
-30° / +200°
DIN 3357
EN 558 Series 1 – DIN 3202 F1
EN 1092-2 ISO7005-2 Flanged
Industrial Epoxy
EN 12266-1
Operation Versions
The DBL11 Full Bore Ball Valve 3 Pieces can be operated with a range of compatible accessories to suit different installation and automation requirements:
1. DVA10 Surface Box & Extension Spindle
2. DVA11 Telescopic Extension Spindle
3. DVA12 Electric Actuators
4. DVA13 Pneumatic Actuators
5. DVA14 Gear Box
6. DVA15 HandWheel
These accessories allow the valve to be adapted for manual, geared, pneumatic, or electric operation, ensuring precise control and reliable performance in both industrial and commercial systems.
Application Areas
The DBL11 Full Bore Ball Valve 3 Pieces is widely used across diverse industrial and commercial sectors, delivering reliable flow control and long‑lasting performance.
1. Water and Wastewater Systems
2. Chemical Industry
3. Food and Beverage Industry
4. Pharmaceutical Industry
5. Oil and Gas Industry
6. HVAC (Heating, Ventilation, Air Conditioning) Systems
In these applications, this type DBL11 Full Bore Ball Valve 3 Pieces ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DBL11 Full Bore Ball Valve 3 Pieces is a high-integrity isolation valve specifically engineered to provide swift, reliable on/off service with maximum resistance to flow. Designed to meet the stringent demands of modern infrastructure, this valve delivers exceptional hydraulic efficiency, robust operational reliability, and unmatched long-term durability across thermal cycling and aggressive media environments.
At the core of the DBL11 Full Bore Ball Valve 3 Pieces is its full-bore design, ensuring the internal diameter matches the connecting pipeline size precisely. This vital configuration eliminates turbulence, maximizes throughput capacity, and is essential for processes requiring pigging or the transfer of high-viscosity, non-clogging fluids. The fundamental quarter-turn operation ensures both rapid isolation and immediate control over fluid handling.
Manufactured from high-strength, corrosion-resistant materials and built with a robust three-piece bolted body, the DBL11 Full Bore Ball Valve 3 Pieces is designed to withstand continuous high pressure and challenging operating environments. The three-piece split body design offers the ultimate field service advantage: the central body section containing the ball and seats can be easily lifted out for maintenance by removing only four bolts, leaving the two end flanges welded or bolted in the line.
The DBL11 Full Bore Ball Valve 3 Pieces is ideally suited for applications requiring welded connections, such as high-temperature steam lines, chemical processing, and any critical system where removing the entire valve assembly for repair is impractical or impossible. Its superior flow characteristics and unique maintainability make it a preferred choice for engineers seeking a high-integrity, standards-compliant solution for long-term operational excellence.
In summary, the DBL11 Full Bore Ball Valve 3 Pieces offers an optimal combination of true hydraulic performance, rapid isolation, and advanced in-line service capability. With its full-bore design, premium three-piece construction, and reliable quarter-turn action, this unit stands as a trusted solution for modern fluid control and process reliability requirements worldwide.
1. General Information
The DBL11 Full Bore Ball Valve 3 Pieces is designed for on/off service requiring rapid closure and zero pressure loss, with optional welded end connections. Proper installation is essential to guarantee safe operation, long service life, and efficient, leak-free performance.
2. Safety Precautions
Installation must be performed by qualified personnel only.
Ensure strict compliance with all local safety regulations and standards concerning working with pressurized, high-temperature, and potentially hazardous fluid systems.
Wear appropriate personal protective equipment (PPE).
Confirm that the pipeline section is fully depressurized and drained before attempting to install the DBL11 Full Bore Ball Valve 3 Pieces.
3. Pre-Installation Checklist
Inspect the DBL11 Full Bore Ball Valve 3 Pieces for any visible damage during transport or storage, paying attention to the end connection faces and handle mechanism.
Check that the valve type, size, and pressure rating match the system requirements
Verify that the valve ball and interior are clean and free from debris.
Confirm that the mating pipeline flanges are properly aligned (parallel and concentric) and free from burrs or sharp edges. Ensure the valve handle has sufficient clearance for a full 90-degree turn in both the open and closed positions.
4. Installation Procedure
Positioning: Install the DBL11 Full Bore Ball Valve 3 Pieces ensuring the flow direction aligns with the valve’s through-bore. The valve is typically bi-directional and can be installed in horizontal or vertical pipelines, with the spindle accessible for operation.
Use the appropriate gaskets or welding procedure suitable for the medium and operating conditions.
Align the valve precisely between the pipeline ends and secure it firmly. If flanged, insert bolts and tighten them gradually and crosswise in incremental steps. If welded, follow approved welding procedures precisely to avoid damaging internal seals.
5. Post-Installation
Slowly reintroduce fluid and pressurize the system, checking for leaks around the flange/weld connections and the stem/packing area. If leakage is detected, depressurize the system immediately and re-tighten the bolts or inspect the weld. Record the installation details, date, and final notes for documentation purposes.
Proper maintenance extends the service life of the DBL11 Full Bore Ball Valve 3 Pieces and ensures reliable shut-off and high flow capacity. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DBL11 Full Bore Ball Valve 3 Pieces exterior regularly (e.g., monthly) for signs of external leakage, especially around the body joints and stem packing. Operate the valve (full open to full closed) periodically to prevent media buildup around the ball and seat seals, maintaining smooth operation.
2. Inspection Schedule
Monthly, check the valve exterior for external leaks around the flange/weld connections and stem packing area.
Quarterly, check the functionality of the locking device (if applicable) and the ease of the quarter-turn operation.
Annually, perform a detailed inspection of the seals and ball surfaces by easily removing the central body section after isolating and draining the line.
3. Lubrication
The DBL11 Full Bore Ball Valve 3 Pieces generally utilizes self-lubricating seats and seals (PTFE/TFM). The stem packing should be inspected, and adjusted or replaced if leakage is present; external lubrication is not required for the internal ball mechanism.
4. Seal and Gasket Replacement
Replace the main body gaskets (at the three-piece joint) and the stem seals immediately if external leakage is observed. The ball seats should be replaced if internal leakage (flow when closed) is detected during a pressure test. Always isolate the valve and fully depressurize and drain the line before attempting any maintenance work requiring central body removal.
5. Cleaning
Keep the exterior of the DBL11 Full Bore Ball Valve 3 Pieces clean to prevent surface corrosion, particularly at the connection points. If media buildup is suspected, the central body section can be easily lifted out for thorough internal cleaning (when isolated and safe).
6. Storage and Spare Parts
Store spare parts (gaskets, replacement seats, packing) in a dry, clean, and cool environment, away from direct sunlight and temperature extremes. Maintain a detailed record of all inspections, internal part replacements, and repairs performed on the DBL11 Full Bore Ball Valve 3 Pieces unit.
We prioritize quality at every stage of production to deliver durable, safe, and efficient products. Our continuous improvement and strict quality controls keep us at the forefront of the industry.
Our certifications prove our commitment to excellence and compliance with international standards, ensuring the safety and reliability of our products worldwide.
We continuously invest in innovation and quality to expand our certifications and meet evolving industry needs.
Frequently Asked Questions about the DBL11?
What are the main advantages of this valve?
The DBL11 Full Bore Ball Valve 3 Pieces offers the highest level of flow efficiency and line integration, combined with unmatched in-line serviceability, allowing the internal trim (ball/seats) to be repaired or replaced without disturbing the main line connection flanges/welds.
Why should I choose this product?
This valve delivers outstanding performance in both sealing and durability, making it a dependable choice for demanding applications. Its straightforward design facilitates easy installation, offering flexibility during system design. With a wide range of material options, it meets the needs of various infrastructure projects, from municipal water networks to industrial facilities.
What is the key maintenance advantage of the 3-piece design?
The three-piece design allows the removal of the central body (containing the critical sealing elements) for inspection or service simply by removing four body bolts. This significantly minimizes downtime compared to traditional two-piece or flanged valve designs.
Is the DBL11 Full Bore Ball Valve 3 Pieces suitable for welding into the pipeline?
Yes. The DBL11 Full Bore Ball Valve 3 Pieces is highly suitable for welding applications as the central body section can be removed prior to welding and replaced afterwards, preventing internal seal damage from high welding temperatures.
What is the benefit of the full bore compared to a reduced bore ball valve?
The full bore design eliminates friction and minimizes pressure loss across the valve, leading to reduced pumping costs and increased system throughput. It also prevents the potential for mechanical abrasion common in reduced bore throats.
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