API 526 Safety Valve, ASTM A351 CF8, DN50, PN16

Key Specifications / Features

The API 526 Safety Valve, manufactured in China, is a spring full lift type with a stainless steel ASTM A351 CF8 body. It has a DN40 (1-1/2 inch) size, a PN160 pressure rating, and flanged ends for secure connections. This valve is designed for reliable pressure relief in industrial applications.

Spring Full Lift Safety Valve

The Spring Full Lift Safety Valve is designed for systems with relatively simple discharge systems, where the discharge pressure can be atmospheric, constant, or may increase by up to 10% of the set pressure. In systems with constant back pressure, the valve should be set at the differential pressure. The valve disc's sealing surface is available in two types: flat and conical, with the discharge area calculated based on the cylindrical or conical surface formed between the disc and valve seat. It is particularly suitable for applications requiring small discharge capacity, large back pressure, and stable system pressure.

Technical Specifications

» Normal Size Range: 1/2-16 Inch (DN15-DN400)
» Normal Pressure Rating: Class 150-600 LB (PN10-PN100)
» Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex, or Other Specials
» Design and Manufacture: GB/T 12243-1989, API RP 520, 521, API 526, API 527
» Face to Face (End to End): GB/T 14087, JB/T 6441, JB/T 2203, JB/T 9624, JB/T 53170
» Flanged Connection: ASME B16.5, DIN 2543 to 2545, EN 12627
» Test and Inspection: API 598, DIN 3230, MSS SP-117
» End Connections: Flanged (FF, RF, RTJ) to international standards
» Working Medium: gas, liquid and steam

Product Features

» Lighter and More Compact: Continuous design improvements have resulted in smaller, lighter valves, aligning with current industry trends for space and weight savings.
» Interchangeable Parts: The valve can be easily modified from one type to another (e.g., gas, liquid, conventional, or bellows) by changing only a few parts.
» Simplified Maintenance: Re-engineering efforts have reduced the number of components, making maintenance easier and more cost-effective.
» Material Selection: A wide range of materials is available, including non-ferrous materials for low-temperature and oxygen service, as well as exotic alloys for the chemical and process industries.

Main Parts and Materials