AAP blind flange, 1/2"

This AAP blind flange is made from carbon steel to ANSI B16.5 Class 300. It is supplied in 12 sizes from 1/2" (15mm) to 12" (300mm).

A blind flange has no centre bore. It closes off the end of a pipe run, a valve port or a vessel nozzle, and can be unbolted when you need access for inspection, cleaning or pressure testing. Forged steel flanges are commonly specified in the oil, gas, petrochemical and mining sectors, where pressure, temperature and safety considerations are higher. They are hot forged and then machined. A105 forgings are not recommended for prolonged use above 427 °C.

Where this product is used

• Closing off spare pipe ends, valve ports and vessel nozzles
• Isolating a line so it can be pressure tested
• Pipework that has to be opened for inspection or cleaning
• Oil, gas, petrochemical and mining pipework

Features

• 12 sizes from 1/2" (15mm) to 12" (300mm)
• Made to ANSI B16.5 Class 300
• Material: carbon steel (ratings for ASTM A105 forgings)
• Raised face, 1.6mm raised face height
• Maximum working pressure 5,110 kPa (51.1 bar) up to 38 °C
• No centre bore, so it closes off the pipe end
• Marked where possible with heat number, size, table, grade and dimensional standard

Key specifications

Choosing the right option

Choose the blind flange that matches the standard, table or class and size of the flange it closes. Match the standard and table or class to the mating flange and compare the drilling dimensions, because flanges made to different standards are not interchangeable. Gaskets and bolting are not included.

Related AAP products: AAP Slip-On Weld Flange, ANSI B16.5 Class 300, AAP Weld Neck Flange, ANSI B16.5 Class 300, AAP Screwed Flange NPT, ANSI B16.5 Class 300, AAP Blind Flange, ANSI B16.5 Class 150.