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SF Series Full-Face Flanges
Standard Class 150 (150 lb.) Full-Face Flanges
Base Part Number: As shown here, the BASE PART NUMBER defines the Series (two characters), the material (one character), the nominal size, and the thickness TH. Use a decimal number to indicate the nominal size. Then, for thicknesses up to 6”, replace the TH with the decimal thickness. For thickness over 6”, contact factory. Note that the Class (or lb.) designation does not imply a pressure rating. For example, a 3/4” Class 150 PTFE Full-Face Flange x 1” thick would be SFT-0.75-1
NPT Threading: For NPT threaded flanges, add to the Base Part Number the suffix NPT. For example, a 2” Class 150 PTFE threaded Full-Face Flange x 1-1/2” thick would be SFT-2-1.5-NPT
See table below for minimum thickness required for the threads.
Class 300 (300 lb.) flanges: For Class 300 flanges, add to the Base Part Number the suffix 300. For other classes, contact the factory. For example, a 2” Class 300 PTFE threaded Full-Face Flange x 1-1/2” thick would be SFT-2-1.5-NPT-300
Click here to view the Sizes of Class 150 and 300 Spacers and Flanges.
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