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Black coated steel blind flange 1-1/4 inch raised face four bolt holes

Zoro Select

Zoro Select Blind Flange Pipe 1-1/4" Class 600 A105

SKU CH-K2JX-8G9K5

A steel blind flange rated for Class 600 service with a 1,450 psi maximum pressure at 72°F

  • Rated for 450 psi at 72 °F working pressure
  • Class 600 rating suits 1450 psi steam service
  • A105 carbon steel handles 80–780 °F range
  • Raised-face 5 1/4 in OD with 4-bolt pattern
  • Black-coated finish resists corrosion in Schedule 80 systems

Zoro Select Blind Flange 1-1/4" Class 600

This blind flange terminates a 1-1/4 inch nominal pipe run in high-pressure service. It is built from A105 carbon steel with a black coating for corrosion resistance. The raised-face design suits Class 600 flanged connections in industrial piping systems. It handles steam and fluid duties up to 780 degrees Fahrenheit.

Verify pipe schedule and bolt pattern before

Confirm the mating pipe is Schedule 80 to match the flange bore and pressure rating. The flange requires four bolts on a 3-7/8 inch bolt circle with 5/8 inch holes. Ensure the system design accommodates the 13/16 inch flange thickness and 5-1/4 inch outside diameter. Maximum operating pressure is 1,450 psi at 72 degrees Fahrenheit.

Black coating protects against surface corrosion

The factory-applied black coating shields the A105 steel during storage and installation. No gasket, bolts or lubricant are included with the flange. The blind configuration provides a solid closure for pressure testing or permanent line termination. It ships as a single component ready for field assembly.

Highlights

  • Rated for 450 psi at 72 °F working pressure
  • Class 600 rating suits 1450 psi steam service
  • A105 carbon steel handles 80–780 °F range
  • Raised-face 5 1/4 in OD with 4-bolt pattern
  • Black-coated finish resists corrosion in Schedule 80 systems

Specifications

BrandZORO SELECT

Questions about this item

Does the blind flange come with the four bolts and gasket needed for installation, or are those purchased separately?

The flange itself is supplied; bolts and gasket are not included and must be sourced separately.

When should I choose the Class 600 A105 version instead of a lower-class flange for my 1-1/4" Schedule 80 line?

Choose this Class 600 A105 flange when the system requires a 1,450 psi rating at 72 °F and service temperatures up to 780 °F.

What does the 1,450 psi @ 72 °F rating mean once the flange is bolted into a steam line?

It is the maximum allowable non-shock pressure at 72 °F; at steam temperatures up to 780 °F the allowable pressure will be lower per the applicable pressure–temperature tables.

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