Slip-On Flanges (SO)

Easy Installation & Cost-Effective Solutions for Reliable Service

Slip-on flanges are designed to slide over the pipe and are welded both inside and outside to provide strength and prevent leakage. This double-weld design ensures a reliable, leak-free connection while offering easier alignment during installation compared to weld neck flanges. The lower initial cost and simpler installation make SO flanges a popular choice for low-to-moderate pressure applications.

These flanges are particularly suitable for systems where frequent dismantling is not required and where the additional cost of weld neck flanges cannot be justified. The slip-on design allows for easier fit-up and alignment, reducing installation time and labor costs while maintaining adequate performance for most industrial applications.

Key Advantages

  • Lower initial cost
  • Easier alignment & installation
  • Double-weld design for reliability
  • Suitable for low-moderate pressure
  • Reduced installation time
  • Wide availability
Size Range
1/2" - 24"
Pressure Class
150# - 600#
Temperature
-29°C to 427°C
Standards
ASME B16.5
Materials
CS / SS / Alloy
Facings
RF / FF
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