Armstrong IS-4 Stainless Steel Universal Connector with Integral Strainer

Class 900 Service for Pressures up to 1,245 psig (86 bar)

The IS-4 Stainless Steel Universal Connector for high pressure and super heat steam lines. The design enables quick and easy access to replace steam traps in critical process applications without disturbing the existing piping.

All stainless steel in-line universal connector with integral strainer able to accept steam traps compatible with the 4-bolt technology. Up to Class 900 service.

With the IS-4 universal connector, you can install a 4-bolt compatible steam trap to fit most piping configurations and applications. The IS-4 combines the integrity of an all welded installation with the versatility of a quick change steam trap replacement.

The IS-4 works with Armstrong Intelligent Monitoring (AIM™) to bring intelligence to wireless technology by applying smart devices to monitor critical plant applications in real time.

  • Class 900 design
  • All stainless steel construction
  • Integral strainer
  • Exceptional corrosion resistance
  • Recessed gasket surface
  • Three-year guarantee against defects in materials and workmanship (connector only)

Maximum Operating Conditions
Maximum allowable pressure (connector design):

IS-4:       1,245 psig @ 900°F (85.8 bar @ 482°C)
IS-4BD:  1,100 psig @ 800°F (75.8 bar @ 426°C)

4-Bolt Connector Steam Traps Available

  • SH4000
  • IB4022
  • IB4011



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