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Black coated steel blind flange raised face 4 inch nominal pipe size flanged by blind eight bolt holes class 600

Zoro Select

Zoro Select Blind Flange Pipe Flange 4" Pipe Flanged x Blind

SKU CH-CCHX-9VT7Q

A raised-face steel blind flange rated for 450 psi at 72 °F, Class 600, Schedule 80, with eight 7/8 in bolt holes on a 7 7/8 in bolt circle

  • Blind flange seals 4" pipe ends securely
  • 450 psi at 72 °F operating pressure rating
  • Withstands steam up to 780 °F temperature
  • Class 600 forged steel A105 construction strength
  • 8 bolt holes on 7 7/8" circle for alignment

Zoro Select Blind Flange 4 Inch

The Zoro Select blind flange provides a solid closure for 4 inch nominal pipe systems in industrial and commercial piping networks. It is built from A105 carbon steel with a black coated finish for corrosion resistance. The raised face design suits flanged connections that require a reliable seal under pressure. Installers and maintenance teams use it to terminate or isolate pipeline sections.

Sustained Pressure And Temperature Performance

This Class 600 flange handles a maximum operating pressure of 1,450 psi at 72 degrees F and maintains the same 1,450 psi rating for steam service. It operates continuously across a temperature range of 80 degrees to 780 degrees F. The 1 1/2 inch flange thickness and steel construction support structural integrity during prolonged thermal cycling and steady-state loading without deformation.

Eight Bolt Hole Pattern On 7 7/8 Inch Circle

The flange features eight bolt holes of 7/8 inch diameter arranged on a 7 7/8 inch bolt circle diameter. This specific pattern determines compatibility with mating flanges and valve connections. Verifying the bolt circle and hole count against the existing piping specification is the single check that confirms whether this part fits the assembly.

Highlights

  • Blind flange seals 4" pipe ends securely
  • 450 psi at 72 °F operating pressure rating
  • Withstands steam up to 780 °F temperature
  • Class 600 forged steel A105 construction strength
  • 8 bolt holes on 7 7/8" circle for alignment

Specifications

BrandZORO SELECT

Questions about this item

Will this Class 600 blind flange handle continuous 450 psi steam service at 780 °F without degrading?

Yes, it is rated for 450 psi maximum steam pressure and an operating range of 80 to 780 °F, so sustained high-temperature steam at the rated pressure is within its design limits.

What mating flange and bolting must already be on the pipe for this blind to seal correctly?

You need a matching Class 600 raised-face flange with an 7 7/8 in bolt circle, eight 7/8 in bolt holes and a compatible gasket sized for the 10 3/4 in outside diameter.

Can this steel A105 blind flange stay bolted to an older carbon-steel Class 600 flange without galvanic corrosion concerns?

Both flanges are carbon steel (A105), so there is no dissimilar-metal couple; standard bolting and gasket practice for Class 600 service applies.

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