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Cast Steel Double Disc Dual Plate/Flap/Butterfly Wafer Check Valve
Technical Specifications
Size Range: 2" ~ 84" (DN50 ~ DN2100)
Pressure Rating: 150LB ~ 2500LB (PN20 ~ PN420)
Materials:
Valve Body: A216 WCB, 304, 316
Valve Disc: 304, 316, AL Bronze
Sealing Material: EPDM, NBR, Viton
Applicable Temperature: -20°C ~ 200°C
Applicable Media: Water, oil, natural gas, steam, seawater, etc.
Connection Method: Wafer Type, which can be installed between flanges.
Design Standards: API 594, DIN 3202, ANSI B16.34.
Testing Standards: API 598.
Product Features
Double-Disc Design: It adopts two semi-circular valve discs, which can open quickly when the fluid flows forward and close automatically when the fluid flows backward.
Wafer Connection: It has a compact structure, is easy to install and saves space.
Low Pressure Loss: With a reasonable flow channel design, it has low fluid resistance and low pressure loss.
Good Sealing Performance: It uses rubber or metal seals to ensure zero leakage.
Fireproof Design: It complies with the API 607 standard, ensuring that it can still maintain sealing in the event of a fire.
Strong Corrosion Resistance: The cast steel or stainless steel material enables it to resist the corrosion of various chemical media.
Lightweight Design: Compared with traditional flange check valves, it is lighter in weight and convenient for installation and maintenance.
Application Areas
Petrochemical Industry: Used to prevent the backflow of fluids in oil and gas transmission pipelines.
Water Treatment Systems: Used to prevent the backflow of water and protect pumps and pipeline systems.
Natural Gas Systems: Used in natural gas transmission pipelines to ensure the safe transmission of gas.
Offshore Engineering: Used in seawater pipeline systems to prevent the backflow of seawater.
Pharmaceutical and Food Industries: Used to handle corrosive media such as acids and alkalis and ensure aseptic processes.
HVAC: Used for the flow regulation at the inlets and outlets of hot and cold water systems and heat exchangers.
Installation and Maintenance
Before Installation: Check whether the inside of the valve is clean and make sure there is no impurity blocking the valve disc. Check whether the flange connections are intact.
During Installation: Ensure that the fluid flow direction is consistent with the arrow mark on the valve body. When using the wafer connection method, make sure that the pipeline flanges are aligned with the valve and tighten the bolts evenly.
Maintenance: Regularly check the sealing performance. If there is leakage, replace the sealing parts in time. Regularly clean the impurities inside the valve body to ensure the normal operation of the valve.
Advantages
High-Quality Manufacturing: Manufactured strictly in accordance with international standards to ensure product quality and performance.
Customization Service: Valves with different sizes, materials and connection methods can be provided according to customer needs.
Wide Application: Applicable to various media and working conditions to meet the needs of different industries.
Automation Compatibility: Actuators can be optionally equipped to achieve automated control.
