DCT23 Flow Control Valve
Devinsan offers responsive hydraulic regulation solutions engineered for precise limiting of flow rate and safeguarding pipelines from over-demand conditions. Designed for stable network balancing and long-term efficiency, these DCT23 Flow Control Valve units utilize advanced pilot-operated mechanics to meet the crucial demands of modern municipal distribution and irrigation systems.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Connection
Coating
Testing
DN 40 – DN 200
PN 6-PN 10-PN 16
-30° / +200°
EN 1092-2 ISO7005-2 Flanged
Electrostatic Powder Epoxy
TS EN 14384
Application Areas
The DCT23 Flow Control 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 DCT23 Flow Control Valve ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DCT23 Flow Control Valve is a sophisticated, hydraulically-operated valve specifically engineered to automatically limit the flow rate in a pipeline to a pre-determined maximum capacity, regardless of upstream pressure fluctuations. Designed to meet the stringent demands of modern infrastructure, this specialized valve ensures equitable distribution, prevents pipeline over-capacity, and prolongs the operational lifespan of system components.
At the core of the DCT23 Flow Control Valve is its diaphragm-actuated main valve controlled by an external flow-sensing pilot system. This pilot mechanism measures the flow velocity through the main valve and modulates the main valve opening to ensure the flow rate never exceeds the set limit. This proportional control is crucial for preventing water theft, managing peak demand, and stabilizing multiple distribution zones.
Manufactured from high-strength, corrosion-resistant materials (such as ductile iron) and built with a robust, globe-style body, the DCT23 Flow Control Valve is designed to withstand continuous high pressure and dynamic operational forces. Its specialized trim design ensures stable modulation near the seating area, effectively mitigating the effects of turbulence and vibration that can occur during partial opening when flow is being restricted.
The DCT23 Flow Control Valve is ideally suited for applications requiring controlled delivery to specific consumers (e.g., industrial users), in irrigation schemes to prevent excessive extraction, and on the feed lines of District Metering Areas (DMAs) for network balancing. Its superior limiting characteristics and dependable operation make it a preferred choice for engineers seeking a high-integrity, standards-compliant solution for long-term network efficiency and conservation.
In summary, the DCT23 Flow Control Valve offers an optimal combination of hydraulic stability, precise flow limitation, and robust network protection. With its pilot-operated design, flow-sensing mechanism, and focus on accurate debi management, this unit stands as a trusted solution for modern fluid control and large pipeline network requirements worldwide.
1. General Information
The DCT23 Flow Control Valve is designed for the accurate, automatic limitation of the flow rate in pressurized systems. Proper installation is essential to guarantee safe operation, long service life, and efficient flow management.
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 pipelines and heavy component lifting.
Wear appropriate personal protective equipment (PPE).
Confirm that the pipeline section and all pilot lines are fully depressurized, isolated, and drained before attempting to install the DCT23 Flow Control Valve.
3. Pre-Installation Checklist
Inspect the DCT23 Flow Control Valve for any visible damage during transport or storage, paying attention to the main diaphragm housing and pilot tubing integrity.
Check that the valve type, size, and pressure rating match the system requirements and the desired maximum flow set point.
Verify that the valve interior and pilot line strainers 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 sufficient space is available above the valve for pilot access and main cover removal during maintenance.
4. Installation Procedure
Positioning: Install the DCT23 Flow Control Valve ensuring the flow direction adheres to the arrow cast on the body.
The valve must be installed with dedicated isolation valves on either side and a bypass line for redundancy.
Use the appropriate 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.
Connect the pilot tubing securely and set the flow-sensing pilot mechanism to the designed maximum flow limit.
5. Post-Installation
Slowly open the upstream isolation valve to reintroduce fluid and pressurize the system, checking immediately for leaks around the flange connections and the pilot tubing.
If leakage is detected, depressurize the system immediately and re-tighten the bolts or connections following the cross-pattern sequence.
Verify the pilot system adjustment and confirm the flow rate does not exceed the set limit under maximum demand conditions.
Record the installation details, flow set rate, and final notes for documentation purposes.
Proper maintenance extends the service life of the DCT23 Flow Control Valve and ensures continuous, accurate flow limitation. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DCT23 Flow Control Valve exterior and pilot line tubing regularly (e.g., monthly) for signs of external leakage, vibration, or corrosion.
Monitor the system flow rate closely to confirm the valve maintains the maximum set point accurately under varying pressure conditions.
2. Inspection Schedule
Monthly, check the pilot system strainers and filters for fouling and clean them to ensure accurate flow sensing.
Quarterly, check the function of the main valve by monitoring its opening and closing stroke during high and low-flow demand periods.
Annually, perform a detailed internal inspection by removing the main cover to check the condition of the diaphragm, seating surface, and stem seals for wear or pitting.
3. Lubrication
The DCT23 Flow Control Valve utilizes fluid-lubricated internal parts (water).
External stem threads or guides (if applicable) may require periodic lubrication; use only recommended grease types.
4. Seal and Gasket Replacement
Replace the main cover/diaphragm gasket and pilot tubing seals immediately if external leakage is observed.
The main valve seat and disc seals should be replaced if flow control fails (i.e., the flow rate exceeds the set maximum).
Always isolate the valve and fully depressurize and drain the line before attempting any maintenance work requiring cover removal.
5. Cleaning
Keep the exterior of the DCT23 Flow Control Valve clean to prevent surface corrosion.
If the valve is disassembled, clean all internal guiding surfaces and the pilot line components carefully to ensure precision hydraulic response.
6. Storage and Spare Parts
Store spare parts (diaphragms, pilot kits, flow sensors, gaskets) in a dry, clean, and cool environment, away from direct sunlight and temperature extremes.
Maintain a detailed record of all inspections, flow tests, and repairs performed on the DCT23 Flow Control 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 DCT23?
What are the main advantages of this valve?
The DCT23 Flow Control Valve provides precise and automatic limitation of the flow rate, which is vital for equitable water distribution and preventing hydraulic overloading of the supply system, especially during peak demand.
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.
How does the DCT23 Flow Control Valve manage flow limitation without electricity?
The DCT23 Flow Control Valve is hydraulically self-operated. The pilot system senses the flow rate (typically via a differential pressure across a measuring orifice) and uses the line pressure itself to modulate the main valve, requiring no external power supply.
What role does the DCT23 Flow Control Valve play in network balancing?
By setting a maximum limit on consumption for specific large users or distribution zones, the DCT23 Flow Control Valve ensures that upstream pressure remains available for other parts of the network, preventing “starvation” during periods of high demand.
Can the flow limit set on the DCT23 Flow Control Valve be overridden remotely?
The basic hydraulic DCT23 Flow Control Valve cannot be overridden remotely. However, it can be combined with a solenoid pilot to create a hybrid valve capable of having its flow limit manually or remotely turned ON or OFF.
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