As a trusted valve manufacturer China, we are also an OEM valve manufacturer and professional custom valve manufacturer. Below is our DF41W-16P double check valve with intermediate relief chamber.
Model: DF41W-16PSize: DN200Pressure Class: PN16End Connection: RF Flanged EndBody Material: Cast Stainless Steel ASTM A351 CF8 (UNS J92580)Internal Trim: 304 Stainless SteelStructure: Double check valve with intermediate relief chamberDesign Standard: GB/T 25178, API 598Test Standard: API 598
Product Advantages
Three-section structure equipped with double check valves and intermediate relief chamber, effectively preventing backflow and back-siphonage to avoid cross-contamination of pipeline medium.
Built-in intermediate relief device automatically releases pressure once backflow risk appears, realizing a high level of safety protection.
Vertical large flow passage with moderate flow resistance, widely applied in water supply, chemical, fire protection and storage tank pipeline systems.
Integral cast CF8 stainless steel body, excellent corrosion resistance for water, weak acid and neutral media, suitable for corrosive service conditions.
Sectional bolted flange connection, detachable for maintenance, convenient for internal cleaning and replacement of sealing assemblies.
Side-mounted test valves for regular on-site inspection of protection performance.
100% hydrostatic shell & sealing performance test before delivery; UT/PT NDT inspection available for castings and welds.
As a custom valve manufacturer, we provide customized solutions according to customers’ working conditions, drawings and parameter requirements. As an OEM valve manufacturer, we accept OEM orders.
Watch custom manufacturing video for this product
