DCV14 Lift Type Check Valve
Devinsan offers robust, heavy-duty check valve solutions engineered for precise flow control and positive backflow prevention in high-pressure steam, gas, and liquid lines. Designed for optimal seal integrity and longevity, these DCV14 Lift Type Check Valve units combine guided disc performance with durable construction to meet the crucial demands of high-temperature and critical industrial 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 12334
EN 558 Series 1 – DIN 3202 F1
EN 1092-2 ISO7005-2 Flanged
Electrostatic Powder Epoxy
EN 12266-1
Application Areas
The DCV14 Lift Type Check 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 DCV14 Lift Type Check Valve ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DCV14 Lift Type Check Valve is a specialized, high-pressure non-return valve engineered to ensure zero-leak sealing and controlled backflow protection, particularly in steam, high-velocity liquid, and gas transmission systems. Designed to meet the stringent demands of modern infrastructure, this valve delivers fast-acting operational reliability and long-term durability in critical chemical and energy applications.
At the core of the DCV14 Lift Type Check Valve is its guided disc (piston) mechanism. When forward flow pressure exceeds the weight of the disc, the disc lifts precisely within its guide to allow flow. Upon flow reversal or deceleration, the disc immediately reseats into the body cavity, ensuring a rapid and highly effective metal-to-metal (or soft) bubble-tight barrier against backflow. This design minimizes disc flutter and is ideal for systems with pulsating flow.
Manufactured from high-strength forged or cast materials and built with a robust, heavy-wall body, the DCV14 Lift Type Check Valve is designed to withstand continuous high pressure and extreme temperature variations common in industrial processes. Its compact design allows for secure installation into horizontal or vertical pipelines. The guided piston action ensures perfect alignment of the seating surfaces every cycle, which significantly maintains sealing integrity and minimizes maintenance costs.
The DCV14 Lift Type Check Valve is ideally suited for applications in boiler feedwater lines, hydrocarbon processing, high-pressure utility manifolds, and any system where quick, positive shut-off of medium-to-high velocity fluids is essential. Its precise sealing mechanism and robust construction make it a preferred choice for engineers seeking a high-integrity, standards-compliant solution for long-term critical process protection.
In summary, the DCV14 Lift Type Check Valve offers an optimal combination of high-pressure capability, fast response time, and superior sealing precision. With its guided lift mechanism, heavy-duty construction, and proven durability, this unit stands as a trusted solution for modern fluid control and critical system protection requirements worldwide.
1. General Information
The DCV14 Lift Type Check Valve is designed for use in high-pressure systems, requiring reliable and fast backflow prevention. 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 high-pressure pipelines and temperature considerations.
Wear appropriate personal protective equipment (PPE).
Confirm that the pipeline section is fully depressurized and drained before attempting to install the DCV14 Lift Type Check Valve.
3. Pre-Installation Checklist
Inspect the DCV14 Lift Type Check 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.
Verify that the valve interior is clean and free from debris that could interfere with disc travel or seating.
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 bonnet removal during maintenance access.
4. Installation Procedure
Positioning: Install the DCV14 Lift Type Check Valve ensuring the flow direction matches the arrow cast on the valve body. The valve is suitable for both horizontal and vertical lines with upward flow; ensure the bonnet is accessible.
Use the appropriate gaskets suitable for the medium and operating conditions.
Align the valve precisely with the pipeline flanges and insert bolts, tightening them gradually and crosswise in incremental steps. This ensures even compression of the gasket and prevents stress on the valve body.
5. Post-Installation
Slowly pressurize the system after installation and check for leaks around the flange connections and the bonnet gasket. 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 DCV14 Lift Type Check Valve and ensures reliable backflow prevention and sealing integrity. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DCV14 Lift Type Check Valve exterior regularly for signs of external leakage, especially around the bonnet and flange joints, given the high-pressure environment. Ensure that the minimum flow velocity required to fully lift the disc is maintained during operation to prevent premature seat wear from fluttering.
2. Inspection Schedule
Monthly, check the valve exterior for external leaks around the bonnet, body, and flange connections.
Quarterly, listen for any sounds of vibration or rattling during operation, which may indicate disc chatter or insufficient forward flow.
Annually, perform a detailed internal inspection by removing the bolted bonnet to check the disc guide, seating surface, and stem alignment.
3. Lubrication
The internal disc and guide mechanism of the DCV14 Lift Type Check Valve operates freely within the fluid and typically does not require lubrication. No external grease or oil is required for the internal components or the sealing mechanism.
4. Seal and Gasket Replacement
Replace the bonnet gasket and any external O-rings immediately if external leakage is observed during high-pressure operation. The seating surface (disc or seat ring) should only be re-machined or replaced if internal leakage (backflow) is detected after a shut-off test. Always depressurize, cool, and drain the pipeline thoroughly before attempting any maintenance work requiring bonnet removal.
5. Cleaning
Keep the exterior of the DCV14 Lift Type Check Valve clean to prevent surface corrosion, particularly where condensation or environmental factors may cause buildup. Ensure that the internal guide channels remain clear to allow the disc to lift and seat without obstruction.
6. Storage and Spare Parts
Store spare parts (gaskets, replacement discs/seals) 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 DCV14 Lift Type Check 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 DCV14?
What are the main advantages of this valve?
The DCV14 Lift Type Check Valve is highly advantageous in high-pressure steam, gas, and liquid lines because its guided piston ensures precise re-seating every time, offering superior, positive sealing and excellent performance under high differential pressures.
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 types of flow is the DCV14 Lift Type Check Valve best suited for?
It is best suited for steady flow (non-pulsating) of clean fluids, where the disc can fully lift and remain stable. It is highly effective in vertical runs (upward flow) where the weight of the disc provides reliable closure force.
Can the DCV14 Lift Type Check Valve be installed in horizontal lines?
Yes. The DCV14 Lift Type Check Valve can be installed in horizontal lines, but particular attention must be paid to ensure the valve receives sufficient flow velocity to fully lift the disc and prevent it from “chattering” against the seat.
How does the guided disc prevent premature wear?
The guided disc (piston) ensures that the disc moves directly and squarely onto the seat every time it closes. This prevents the misalignment and scrubbing action that causes rapid wear on the seat and disc in unguided or swing-type check valves.
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