DOP11 Globe Valve
Devinsan offers highly dependable flow modulation solutions engineered for accurate throttling and precise flow regulation in both high-pressure and high-temperature service. Designed for optimal fluid control and reliable bubble-tight shut-off, these DOP11 Globe Valve units utilize a robust, linear-motion disc-and-seat mechanism to meet the critical demands of modern process control and steam applications.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Design
Face to Face
Connection
Coating
Testing
DN 15 – DN 150
PN 6-PN 10-PN 16-PN 25-PN 40
-30° / +200°
EN 13789
EN 558 Series 1 – DIN 3202 F1
EN 1092-2 ISO7005-2 Flanged
Industrial Epoxy
EN 12266-1
Operation Versions
The DOP11 Globe 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 DOP11 Globe 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 type DOP11 Globe Valve ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DOP11 Globe Valve is a premier flow control valve specifically engineered to modulate flow and regulate pipeline pressure with high accuracy and reliability. Designed to meet the stringent demands of modern infrastructure, this valve delivers exceptional long-term durability and operational precision in steam generation, chemical processing, and general utility service where frequent throttling is required.
At the core of the DOP11 Globe Valve is its unique non-rotating disc element, which moves perpendicularly to the flow stream. This linear action provides superior control over the flow rate, allowing technicians to achieve highly precise regulation and throttling duties across various fluid conditions. The design ensures the disc seats firmly against the body seat, providing reliable shut-off capability even under high differential pressure.
Manufactured from high-strength, corrosion-resistant materials and built with a robust, heavy-duty body, the DOP11 Globe Valve is designed to withstand continuous high pressure and extreme temperature variations common in industrial processes. Its traditional design includes a tortuous flow path, which results in a higher pressure drop compared to ball or gate valves, but provides superior resistance to seat erosion and leakage under throttling conditions.
The DOP11 Globe Valve is ideally suited for applications in boiler systems, cooling water loops, chemical injection points, and anywhere flow must be accurately started, stopped, or modulated frequently. Its superior regulation characteristics and reliable sealing performance make it a preferred choice for engineers seeking a high-integrity, standards-compliant solution for long-term critical flow control and maintenance.
In summary, the DOP11 Globe Valve offers an optimal combination of highly accurate flow modulation, superior shut-off integrity, and robust resistance to seat wear during throttling. With its linear disc mechanism, heavy-duty construction, and precise control focus, this unit stands as a trusted solution for modern fluid control and process reliability requirements worldwide.
1. General Information
The DOP11 Globe Valve is designed for precise throttling and flow regulation duties in high-pressure pipelines. Proper installation is essential to guarantee safe operation, long service life, and efficient flow modulation.
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, isolated, and drained before attempting to install the DOP11 Globe Valve.
3. Pre-Installation Checklist
Inspect the DOP11 Globe Valve for any visible damage during transport or storage, paying attention to the bonnet connection and end flanges.
Check that the valve type, size, and pressure rating match the system requirements and the required throttling characteristics.
Verify that the valve interior is clean and free from debris that could damage the seat or disc surface.
Confirm that the mating pipeline flanges are properly aligned (parallel and concentric) and free from rotational strain. Ensure sufficient space is available above the valve for handwheel operation and removal of the bonnet during maintenance.
4. Installation Procedure
Positioning: Install the DOP11 Globe Valve ensuring the flow direction adheres to the arrow cast on the body. For optimal performance in throttling applications, the flow should typically enter beneath the disc (rising flow).
Use the appropriate high-pressure gaskets suitable for the medium and operating conditions.
Align the valve precisely between the pipeline flanges and insert bolts, tightening them gradually and crosswise in incremental steps. Do not exceed the specified torque to prevent stress on the valve body.
5. Post-Installation
Slowly reintroduce fluid and pressurize the system, checking immediately for leaks around the flange connections and bonnet seals. If leakage is detected, depressurize the system immediately and re-tighten the bolts following the cross-pattern sequence. Verify the actuator stroke and calibration according to the required flow curve. Record the installation details, date, and final bolt torques for documentation purposes.
Proper maintenance extends the service life of the DOP11 Globe Valve and ensures reliable flow modulation and shut-off integrity. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DOP11 Globe Valve exterior regularly (e.g., monthly) for signs of external leakage, especially around the plunger stem packing area. Listen for unusual noise or vibration during throttling, which may indicate incipient cavitation or seat erosion.
2. Inspection Schedule
Monthly, check the area surrounding the valve for any signs of external leakage.
Quarterly, check the function and security of the actuator assembly and ensure the handwheel operates smoothly.
Annually, perform a detailed internal inspection by removing the bolted bonnet to check the disc and seat sealing surfaces for signs of wire drawing or erosion caused by throttling.
3. Lubrication
The plunger stem and guides may require periodic lubrication according to the manufacturer’s specifications to ensure smooth, low-friction axial movement. Use only the recommended grease type and application method.
4. Seal and Gasket Replacement
Replace the bonnet gaskets and stem packing immediately if external leakage is observed during high-pressure operation. The seat sealing rings or plunger sealing surfaces should be inspected and replaced if wear is detected, as this compromises throttling accuracy. Always isolate the valve and fully depressurize and drain the line before attempting any maintenance work requiring bonnet removal.
5. Cleaning
Keep the exterior of the DOP11 Globe Valve clean to prevent surface corrosion. If the valve is disassembled, clean all internal guiding surfaces and disc components carefully to ensure precision movement upon reassembly.
6. Storage and Spare Parts
Store spare parts (gaskets, seals, replacement discs/seats) 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 DOP11 Globe 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 DOP11?
What are the main advantages of this valve?
The DOP11 Globe Valve excels in flow regulation by offering precise control over the flow rate, which is crucial for managing system stability and pressure. It provides a superior, repeatable shut-off capability compared to other types of throttling valves.
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.
Why does the DOP11 Globe Valve result in a higher pressure drop than a ball valve?
The flow path in the DOP11 Globe Valve involves two directional changes (creating a tortuous path) as the fluid moves around the seat. This internal flow resistance is the reason for its higher pressure drop but provides the necessary control for effective throttling.
In a throttling application, should the flow enter above or below the disc?
For liquids in high-temperature or high-pressure throttling service, flow is usually directed above the disc to prevent the stem from buckling and to place the packing gland under static system pressure.
Can the DOP11 Globe Valve be used as a tight shut-off isolation valve?
While the DOP11 Globe Valve can provide good shut-off, its primary function is accurate flow modulation. For absolute, bubble-tight isolation, a separate dedicated isolation valve (e.g., a gate valve) is usually recommended upstream for redundancy during maintenance.
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