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Aluminium slip-on flange, flat silver finish, four bolt holes

Zoro Select

Zoro Select BULK-PF-474 Aluminum Slip-On Flange

SKU CH-FX94-8PNRM

Aluminum slip-on flange rated for 125 psi at 72 degrees F with four bolt holes on a six-inch circle

  • Aluminium construction resists corrosion for long service life
  • Class 125 rating handles 125 psi at 72 °F operating pressure
  • Slip-on design simplifies installation on Schedule 40 pipe
  • Four bolt holes on a 6-inch circle ensure secure alignment
  • 6063 alloy performs from 0 °F to 270 °F

Flange for 3-inch Schedule 40 pipe

This aluminum slip-on flange fits a nominal 3-inch pipe size and matches Schedule 40 dimensions. It provides a flat-face connection for low-pressure plumbing or industrial lines where a welded or threaded joint is not required.

Rated 125 psi at 72 degrees F

The flange handles a maximum operating pressure of 125 psi at 72 degrees F and up to 185 psi for steam service. Its 6063 aluminum construction remains stable across a temperature range of 0 to 270 degrees F without the thermal cycling concerns of dissimilar-metal assemblies.

Four-bolt pattern on a 6-inch circle

Four bolt holes of 3/4-inch diameter sit on a 6-inch bolt circle, allowing standard hardware to secure the joint. The 3/4-inch flange thickness and 7 1/2-inch outside diameter give a rigid mating surface that resists distortion during tightening.

Highlights

  • Aluminium construction resists corrosion for long service life
  • Class 125 rating handles 125 psi at 72 °F operating pressure
  • Slip-on design simplifies installation on Schedule 40 pipe
  • Four bolt holes on a 6-inch circle ensure secure alignment
  • 6063 alloy performs from 0 °F to 270 °F

Specifications

BrandZORO SELECT

Questions about this item

How do I align the four 3/4 in bolt holes on the 6 in bolt circle when slipping this 3 in Schedule 40 flange onto the pipe?

Slip the flange over the pipe end, rotate until the four 3/4 in holes line up with the mating flange on the 6 in bolt circle, insert bolts through both flanges, then tighten in a cross pattern to seat the flat face evenly.

Will the 6063 aluminum sealing face need periodic re-torquing or gasket replacement under 125 psi water service at 72 Degrees F?

The flat face and 3/4 in thickness maintain compression on a full-face gasket; re-torque after the first thermal cycle to 270 Degrees F, then inspect annually — replace the gasket if weeping appears.

At what temperature does the 125 psi pressure rating of this Class 125 flange begin to drop?

The 125 psi rating applies at 72 Degrees F; above that temperature the allowable pressure decreases until the 270 Degrees F limit where steam pressure peaks at 185 psi.

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