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Stainless steel threaded flange with four bolt holes

Zoro Select

Zoro Select BULK-PF-772 Flange 5 1/8 in Thrd SS

SKU CH-5RRP-PH7XT

A raised-face 316 stainless-steel flange rated for 400 psi at 72 °F with four bolt holes on a 3 1/2 in circle

  • Rated 400 psi at 72 °F for high-pressure service
  • Class 1500 raised-face flange handles severe duty cycles
  • 316 stainless steel resists corrosion in harsh media
  • Four 3/4 in bolt holes on 3 1/2 in circle simplify alignment
  • Threaded FNPT connection enables direct pipe assembly

Zoro Select BULK-PF-772 Stainless Steel Flange

The Zoro Select BULK-PF-772 is a raised-face stainless steel flange designed for industrial piping systems. It suits engineers and maintenance crews who need a 3/4 inch nominal pipe connection with a female NPT thread. The 316 stainless construction resists corrosion in demanding environments. This new component fits Class 1500 pressure ratings.

Pressure Rating and Operating Limits

The flange handles a maximum operating pressure of 400 psi at 72 degrees Fahrenheit. It is built for Schedule XXH pipe, providing headroom for high-pressure service within its class rating. The four-bolt pattern on a 3 1/2 inch bolt circle secures the joint reliably. It runs out beyond the stated pressure and temperature limits.

316 Stainless Steel Material Grade

The 316 stainless steel grade determines suitability for corrosive media and elevated temperatures. Buyers needing a different alloy or a lower pressure class should select another part. This grade also dictates compatibility with specific gasket materials. Verify the material requirement before ordering.

Highlights

  • Rated 400 psi at 72 °F for high-pressure service
  • Class 1500 raised-face flange handles severe duty cycles
  • 316 stainless steel resists corrosion in harsh media
  • Four 3/4 in bolt holes on 3 1/2 in circle simplify alignment
  • Threaded FNPT connection enables direct pipe assembly

Specifications

BrandZORO SELECT

Questions about this item

Will the 316 stainless steel flange mate with my existing Schedule XXH piping?

Yes, the flange is rated for Schedule XXH pipe and has a 5 1/8 in outside diameter with four 3/4 in bolt holes on a 3 1/2 in bolt circle.

How can I verify the 400 psi rating holds at 72 degrees F after installation?

Pressure-test the assembly at the rated 400 psi maximum operating pressure and check for leaks at the FNPT threads and gasket surfaces.

Does the box include bolts and gaskets for the four-hole pattern?

The flange ships alone; you must supply 3/4 in bolts, nuts and a matching gasket for the 3 1/2 in bolt circle.

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