OSECO’s FLCO series provides low-pressure relief from 1 psig to 50 psig and is available in sizes from 2” to 36”. The FLCO, our classic flat disk for low pressure, and the FLCOS, the patented combination FLCO and disk sensor, are both fully bidirectional and not torque-sensitive. These disks are excellent for applications in which the normal operating pressure does not exceed 50% of the rated burst pressure. They are made from standard disk materials and encapsulated with corrosion-resistant PFA Teflon^® liners, whcih are in contact with all process media. Nonasbestos gaskets are standard, and other gasket materials can be supplied; consult Advanced Rutpure Disk Technology with your specific requirements.

• Design fit to standard ANSI flanges
• Nonfragmenting, bidirectional design
• Temperature capability up to 500^oF
• Excellent for relief valve discharge isolation
• Integral alarm sensor built into FLCOS model

Table 1 - TYPE - FLCO

Pipe Size Inches O.D. Inches Approx. Thickness Inches Min. B.P. PSIG Max. B.P. PSIG 2 4 1/8 6 40 3 5 1/4 1/8 4 35 4 6 3/4 1/8 3 30 6 8 5/8 1/8 2 25 8 10 7/8 1/4 1 1/2 15 10 13 1/4 1/4 1 1/4 15 12 16 1/4 1 15 14 17 5/8 1/4 1 10 16 20 1/8 1/4 3/4 10 18 21 1/2 1/4 3/4 10 20 23 3/4 1/4 3/4 10 24 28 1/8 1/4 3/4 10

Table 2 - FLCO Burst Range (Min-Max)*

Burst Pressure PSIG Burst Range PSIG 3/4 + .25 1-1 1/4 + .5 1 1/2-2 1/4 + .75 2 1/2-3 1/2 + 1 4-5 + 1.5 6-10 + 2 11-16 + 2.5 17-25 + 3 26-40 + 4

* All tolerances and manufacturing ranges are within the burst range.

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