Model HPFF3 Compensator

Compensators

The HPFF3 is an externally pressurized expansion compensator that has several advantages over other in-line bellows joints.  Since the pressure is on the outside of the bellows, more corrugations can be added to the design resulting in a joint capable…

Product Description

Product Highlights

Additional Resources

Submittals

Product Description

The HPFF3 is an externally pressurized expansion compensator that has several advantages over other in-line bellows joints.  Since the pressure is on the outside of the bellows, more corrugations can be added to the design resulting in a joint capable of more movement. The design features pipe that acts as a liner and a casing that acts as a cover to protect the bellows from damage.  An internal guide makes this a stable, rugged joint.

All inline bellows expansion joints develop anchor loads and require guiding.  Refer to the design guide or consult Metraflex or your local representative for more information.

Product Highlights

  • Conforms to MIL-DTL-17813H
  • Maximum Working Temperature 400°F
  • Maximum Working Pressure 150 PSI
  • Maximum Test Pressure 225 PSI at 70°F
  • Body                     304 Stainless Steel
  • Bellows                2-Ply 304 Stainless Steel
  • End fittings         Copper Female Sweat Ends
  • CAUTION: Silver brazing used in construction. Do not exceed 1000°F during installation.  Avoid flux exposure to the stainless-steel components of the HPFF3.

Additional Resources

HPFF3 - Copper Body, 304 Stainless Steel Bellows

Group 8 Created with Sketch.

PART NO. Pipe Size Pressure / Temp Compression Extension Effective Area
(in2)
Spring Rate
(lbs/in)
Weight 3D Drawing
HPFF30075 .75″ 150 PSIG at 400 deg F. 3″ 0.5″ 1.1 58 1 Revit/CAD
HPFF30100 1″ 150 PSIG at 400 deg F. 3″ 0.5″ 1.7 63 1.5 Revit/CAD
HPFF30125 1.25″ 150 PSIG at 400 deg F. 3″ 0.5″ 2.4 54 2 Revit/CAD
HPFF30150 1.5″ 150 PSIG at 400 deg F. 3″ 0.5″ 3.2 52 3 Revit/CAD
HPFF30200 2″ 150 PSIG at 400 deg F. 3″ 0.5″ 5.1 118 4 Revit/CAD
HPFF30250 2.5″ 150 PSIG at 400 deg F. 3″ 0.5″ 7.6 110 5 Revit/CAD
HPFF30300 3″ 150 PSIG at 400 deg F. 3″ 0.5″ 10.6 175 6 Revit/CAD
HPFF30400 4″ 150 PSIG at 400 deg F. 3″ 0.5″ 17.9 241 12 Revit/CAD

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