Advance Valve Product Information

Type 526

 Flanged Pressure Relief Valve

Type 526

API 526 is a purchase specification in which the nominal diameters, flange pressure ratings, center to face dimensions, flow areas, body and spring materials and their service limits are stipulated for "API safety valves" API safety valves are used worldwide in the petrochemical industry, both on- and off-shore. These applications are characterised by standardised plants, blow-down systems and long pipework sections. The LESER Type 526 combines the requirements of the API standards and the ASME Code with the tried and tested service reliability of the LESER range.



 Technical Information
Orifice Letter Flow Area According to API 526 Flow Diameter
"Orifice" mm² Sq. In. mm Inch
D 71.0 0.110 9.5 0.4
E 126 0.196 12.7 0.5
F 198 0.307 15.9 0.6
G 325 0.503 20.3 0.8
H 506 0.785 25.4 1.0
J 830 1.287 32.5 1.3
K 1186 1.838 38.9 1.5
L 1841 2.853 48.4 1.9
M 2323 3.600 54.4 2.1
N 2800 4.340 59.7 2.4
P 4116 6.380 72.4 2.8
Q 7129 11.05 95.3 3.8
R 10323 16.00 114.6 4.5
T 16774 26.008 146.1 5.8