"HIGH CORR" FREE FLEXING SERIES 50 PSIG EXPANSION JOINTS
MDC low pressure (50 psi) Free Flexing, High Corrugation expansion joints absorb pipe movement under pressure. Widely used in such applications as process and steam lines, pump suction and discharge lines, turbine-to-condenser connections, fuel supply lines and bulkhead seals. Available with either Vanstone (floating) flanges (Model FSF) or with weld ends (Model FSW).
Max. operating pressure: Maximum test pressure:
Maximum temperature:
Bellows (single ply):


Flanges:



Weld ends:
Covers (shroud):
Tie Rods:
Liners (sleeve):
50 psig (345 kPa)
75 psig (517 kPa)
850°F (454°C) – C/S fitting limited.
Hydro-formed (1-10 corrugations)
T304 SS (standard)
T316 SS, Inconel, Monel (optional)
A36/A516-70 plate 150 lbs, Vanstone (standard)
ASTM A105 (optional), 150 lbs ANSI B16.5 RFSO
ASTM A53/A106, sch.40 (standard)
carbon steel (optional accessory)
carbon steel (optional accessory)
300 series stainless steel (optional accessory)
Joints with Vanstone flanges furnished with “top
hat” liner.
 
Internal liners are required for steam, air and other gases where velocities exceed 4’/sec. per inch of diameter for diameters up to 6 in. and where velocities exceed 25’/sec. in diameters above 6 in.

For water and other liquids, the corresponding values are 1.66’/sec. and 10’/sec. Maximum movement per single 10-corrugation joint: 7-1/2”. For larger movements use dual joints. Dual joints are furnished with an anchor base.
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