DBV11 Wafer Type Butterfly Valve
Devinsan offers compact and reliable isolation solutions engineered for efficient performance across general industrial and utility networks. Designed for long service life and easy integration, these DBV11 Wafer Type Butterfly Valve units provide robust sealing capabilities to meet the fundamental demands of modern fluid control infrastructure
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Design
Face to Face
Connection
Coating
Testing
DN 40 – DN 500
PN 6-PN 10-PN 16
-30° / +200°
EN 593
EN 558 Series 20
EN 1092-1 ISO7005-1 Wafer Type
Electrostatic Powder Epoxy
EN 12266-1
Operation Versions
The DBV11 Wafer Type Butterfly Valve 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 DBV11 Wafer Type Butterfly Valve 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 DBV11 Wafer Type Butterfly valve ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DBV11 Wafer Type Butterfly Valve is a versatile and compact isolation solution engineered for precise and dependable fluid control across a wide range of industrial and utility applications. Designed to meet the stringent demands of modern infrastructure, this valve delivers exceptional sealing performance, operational reliability, and long-term durability in both commercial and municipal systems.
At the heart of the DBV11 Wafer Type Butterfly Valve is its centralized disc design, offering rapid quarter-turn operation for quick on/off service. This advanced design ensures smooth, low-torque operation and dependable shut-off capability. The resilient liner creates a bubble-tight seal against the disc, effectively preventing leakage even under fluctuating flow conditions. This robust sealing surface provides complete flow isolation when closed, significantly enhancing safety and efficiency in critical fluid networks.
Manufactured from corrosion-resistant materials and built with a robust body, the DBV11 Wafer Type Butterfly Valve is designed for easy installation between standard pipeline flanges. Its lightweight and space-saving wafer configuration allows for convenient integration into various pipeline systems, while the straightforward design minimizes required maintenance and reduces overall operational costs.
The DBV11 Wafer Type Butterfly Valve is ideally suited for municipal water distribution, HVAC networks, general industry applications, and irrigation systems, where consistent performance and reliable, leak-free operation are essential. Its versatility and simple installation process make it a preferred choice for engineers and project managers seeking a reliable, standards-compliant solution for long-term infrastructure performance.
In summary, the DBV11 Wafer Type Butterfly Valve offers an optimal combination of performance, efficiency, and safety. With its effective sealing system, durable construction, and ease of maintenance, this unit stands as a trusted solution for modern fluid control applications worldwide.
1. General Information
The DBV11 Wafer Type Butterfly Valve is designed for secure mounting between pipeline flanges, ensuring quick and reliable installation in fluid distribution networks. Proper installation is essential to guarantee safe operation, long service life, and sustained 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 pipeline pressure and equipment handling.
Wear appropriate personal protective equipment (PPE).
Confirm that the pipeline is fully depressurized and drained before attempting to install the DBV11 Wafer Type Butterfly Valve.
3. Pre-Installation Checklist
Inspect the DBV11 Wafer Type Butterfly Valve for any visible damage during transport or storage.
Check that the valve type, size, and pressure rating match the system requirements.
Verify that the valve interior is clean and free from debris.
Confirm that the pipeline flange faces are properly aligned, parallel, and free from burrs or sharp edges that could damage the resilient seal.
Ensure sufficient space is available for actuator operation and maintenance access.
4. Installation Procedure
Positioning: Install the DBV11 Wafer Type Butterfly Valve by carefully centring it between the mating flanges with the disc in a partially open position (about 10°) to protect the seat during insertion.
Use the flange bolts to secure the valve, ensuring the bolts are tightened gradually and crosswise in incremental steps.
This ensures even compression of the liner and prevents damage to the valve body.
Cycle the valve fully open and closed after mounting to confirm smooth operation before pressurizing.
5. Post-Installation
Slowly pressurize the system after installation and carefully check for leaks around the flange connections and the stem/shaft area.
If leakage is detected, depressurize the system immediately and re-tighten the bolts following the cross-pattern sequence.
Record the installation details, date, and final bolt torques for documentation purposes.
Proper maintenance extends the service life of the DBV11 Wafer Type Butterfly Valve and ensures reliable performance. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Operate the DBV11 Wafer Type Butterfly Valve (open/close) periodically, at least quarterly, to prevent seizing and the buildup of deposits on the disc and sealing surfaces, maintaining optimal functionality.
Avoid using the valve for continuous throttling or modulation, as it is primarily designed for on/off isolation service.
2. Inspection Schedule
Monthly, check the valve exterior for external leaks around the body, stem packing, and flange connections.
Quarterly, fully operate the valve to verify smooth disc movement and full closure capability.
Annually, perform a detailed inspection of the liner, stem seals, and body coating condition.
3. Lubrication
The DBV11 Wafer Type Butterfly Valve is generally maintenance-free regarding lubrication.
However, if applicable (e.g., for gear operators), lubricate the gearbox according to the manufacturer’s specific recommendations.
Ensure all moving parts remain free of dirt and external corrosion.
4. Seal and Gasket Replacement
Replace the resilient liner, O-rings, or stem seals immediately if external leakage or visible wear is observed.
Always depressurize and drain the pipeline thoroughly before performing any maintenance work that requires seal replacement.
Only use original spare parts to guarantee perfect compatibility and long-term reliability.
5. Cleaning
Keep the exterior of the DBV11 Wafer Type Butterfly Valve clean to prevent surface corrosion, which can be accelerated by environmental factors.
In mildly aggressive environments, consider applying additional protective coating or insulation around the body and flanges.
6. Storage and Spare Parts
Store spare parts (liners, seals, gaskets) in a dry, clean, and cool environment, away from direct sunlight and harsh chemicals.
Maintain a detailed record of all inspections, repairs, and replacements performed on the DBV11 Wafer Type Butterfly Valve 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 DBV11?
What are the main advantages of this valve?
The DBV11 Wafer Type Butterfly Valve offers rapid quarter-turn operation, high flow capacity with minimal pressure drop, and a space-saving, lightweight design. Its resilient liner ensures maximum sealing performance, making it a cost-effective and reliable solution for general fluid control applications.
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 makes the wafer design advantageous?
The wafer design of the DBV11 Wafer Type Butterfly Valve is exceptionally compact and lightweight, requiring less space and support than flanged alternatives. This design simplifies installation and removal, making it highly economical for general purpose isolation tasks.
Can the liner of the DBV11 Wafer Type Butterfly Valve be replaced on-site?
Yes. The resilient liner, which provides the primary seal, is designed to be easily replaceable. However, any liner replacement must be performed by qualified technicians following the manufacturer’s specific procedures to ensure proper sealing after reassembly.
What is the pressure limit for the DBV11 Wafer Type Butterfly Valve?
The pressure limit is determined by the specific material configuration and size, but the DBV11 Wafer Type Butterfly Valve is typically rated for standard pressure classes (e.g., PN10 or PN16). Always consult the technical datasheet for the exact pressure-temperature rating of your specific model.
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