Dual Plate Check Valve
Description
DUAL PLATE CHECK VALVE
Wafer / Lug / Double Flanged | Class 150 / 300 / 600 | DN 50 β 600
MNC Industrial Valves is a reliable Dual Plate Check Valve Manufacturer in India, supplying high-performance non-return valves designed for fast closing, low pressure drop, and compact installation in industrial pipeline systems.
Dual Plate Check Valves, also known as Double Door Check Valves, are widely used in oil & gas pipelines, petrochemical plants, power generation facilities, water systems, and chemical processing industries where reliable backflow prevention and minimal pressure loss are required.
The dual plate design uses two spring-loaded semicircular discs mounted on a central hinge pin, allowing quick response to flow reversal and reducing the risk of water hammer.
MANUFACTURING STANDARDS
| Design Standard | API 594 |
| Face to Face Dimension | API 594 / ASME B16.10 |
| Flanged End Standard | ASME B16.5 |
| Inspection & Testing | API 598 |
| Valve Marking | MSS SP-25 |
PRODUCT OVERVIEW
- Valve Type: Dual Plate Check Valve
- Function: Non Return / Backflow Prevention
- Disc Type: Spring Loaded Dual Plates
- Operation: Automatic
- Installation: Horizontal or Vertical (Upward Flow)
Dual plate check valves are designed for high efficiency and fast closure, minimizing reverse flow in pipeline systems.
SIZE RANGE
Standard Manufacturing Range: DN 50 mm to DN 600 mm
PRESSURE CLASS
Available Pressure Ratings: Class 150, Class 300, Class 600
Pressure-temperature ratings as per ASME B16.34.
END CONNECTION OPTIONS
Wafer Type, Lug Type, Double Flanged. These options allow installation between ASME B16.5 flanges.
TEMPERATURE RANGE
Typical operating temperature range: β29Β°C to +425Β°C. Actual limits depend on seat material and body material.
MATERIAL OF CONSTRUCTION (MOC)
| Component | Material Options |
|---|---|
| Body | ASTM A216 WCB, CF8 (SS304), CF8M (SS316) |
| Disc | SS304, SS316 |
| Seat | Metal Seat, Optional soft seat |
| Spring | Inconel, SS304 / SS316 |
| Hinge Pin | SS410 / SS420 |
DESIGN FEATURES
- Compact wafer design
- Lightweight construction
- Spring assisted closing mechanism
- Dual plate disc system
- Low pressure drop
- Fast closing action
- Reduced water hammer effect
- Suitable for horizontal and vertical installation
- Maintenance friendly design
WORKING PRINCIPLE
Dual Plate Check Valves operate using spring-loaded discs.
During forward flow: Fluid pressure pushes the two plates open.
During reverse flow: The spring mechanism closes the plates quickly, preventing reverse flow and reducing water hammer.
INDUSTRIES
- Oil & Gas Industry
- Petrochemical Plants
- Refineries
- Power Generation Plants
- Water Treatment Plants
- Chemical Processing Plants
- Steel Industry
- Cement Plants
- Marine Industry
- Pulp & Paper Industry
APPLICATIONS
- Pump discharge pipelines
- Cooling water systems
- Hydrocarbon transfer lines
- Chemical process pipelines
- Steam pipelines
- Water distribution systems
- Utility pipelines
TESTING
All valves are tested according to API 598. Testing procedures include: Hydrostatic shell testing, Seat leakage testing, Functional operation testing.
ADVANTAGES OF DUAL PLATE CHECK VALVES
- Compact design
- Lower weight compared to swing check valves
- Fast closing response
- Reduced water hammer risk
- Low pressure drop
- Suitable for high flow systems
- Easy installation between flanges
INSTALLATION GUIDELINES
- Install between flanges with proper alignment
- Ensure correct flow direction marking
- Avoid pipeline vibration
- Use correct flange bolting torque
- Install upstream of sensitive equipment
Frequently Asked Questions
ENQUIRY DETAILS REQUIRED
Please provide the following details for proper valve selection:
- Pipeline Size (DN / Inch)
- Pressure Class
- Body Material
- Process Media
- Operating Temperature
- End Connection Type
- Quantity
- Application Details
Our engineering team will assist in selecting the correct Dual Plate Check Valve.
