4 in (100 mm) Blind Flat Face Flange, AS4087 PN21 | 4087BPN2194
Available
This AAP blind flat face flange is made from steel to AS4087 PN21 (manufacturer-stated). It is supplied in 12 sizes from 4 in (100 mm) to 48 in (1200 mm).
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. AAP describes plate flanges as mainly used for light duty, lower pressure or non-critical applications. They are cut and machined from plate steel.
AAP lists AS4087 PN21 (manufacturer-stated) at an allowable operating pressure of 2,100 kPa, a maximum operating pressure of 2,520 kPa and an allowable site test pressure of 2,625 kPa.
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
- Water supply, irrigation, fire services and general industry pipework
Features
- 12 sizes from 4 in (100 mm) to 48 in (1200 mm)
- Made to AS4087 PN21 (manufacturer-stated)
- Material: steel
- Flat face
- Allowable operating pressure 2,100 kPa (21 bar), per the manufacturer
- No centre bore, so it closes off the pipe end
- Marked where possible with heat number, size, table, grade and dimensional standard
Key specifications
| Specification | Detail |
|---|---|
| Brand | AAP |
| Flange type | Blind flat face flange |
| Standard (manufacturer-stated) | AS4087 PN21 |
| Material | Steel |
| Face | Flat face |
| Connection | Blind, no centre bore |
| Sizes | 4 in (100 mm) to 48 in (1200 mm) (12 sizes) |
| Allowable operating pressure | 2,100 kPa (21 bar) |
| Maximum operating pressure | 2,520 kPa (25.2 bar) |
| Allowable site test pressure | 2,625 kPa (26.25 bar) |
| Marking | Where possible: heat number, size, table, grade and dimensional standard |
Options and part numbers
| Size | Part number | OD (mm) | PCD (mm) | Holes | Bolt size | Weight (kg) |
|---|---|---|---|---|---|---|
| 4 in (100 mm) | 4087BPN2194 | 230 | 191 | 8 | M16 | 5.89 |
| 6 in (150 mm) | 4087BPN2196 | 305 | 260 | 12 | M20 | 12.9 |
| 8 in (200 mm) | 4087BPN2198 | 370 | 324 | 12 | M20 | 19.4 |
| 10 in (250 mm) | 4087BPN21X25 | 430 | 381 | 12 | M24 | 32.7 |
| 12 in (300 mm) | 4087BPN21X30 | 490 | 438 | 16 | M24 | 42.41 |
| 16 in (400 mm) | 4087BPN21X40 | 610 | 552 | 20 | M27 | 82.96 |
| 18 in (450 mm) | 4087BPN21X45 | 675 | 610 | 20 | M30 | 101.64 |
| 20 in (500 mm) | 4087BPN21X50 | 735 | 673 | 24 | M30 | 152.13 |
| 24 in (600 mm) | 4087BPN21X60 | 850 | 781 | 24 | M33 | 247.22 |
| 30 in (750 mm) | 4087BPN21X75 | 1015 | 940 | 28 | M33 | 355.4 |
| 36 in (900 mm) | 4087BPN21X90 | 1185 | 1105 | 32 | M36 | 568.27 |
| 48 in (1200 mm) | 4087BPN21X120 | 1530 | 1441 | 40 | M39 | 1231.7 |
Selecting 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 listed on this page, because flanges made to different standards are not interchangeable. Gaskets and bolting are not part of this listing. The 36 in and 48 in sizes are special manual orders because shipping costs vary, so contact AIMS for a quote for your area. If you are not sure what suits, contact AIMS with the standard and size of the mating flange.
Related products
See also AAP Plate Flat Face Flange, AS4087 PN21, AAP Blind Flat Face Flange, AS4087 PN16, AAP Blind Flat Face Flange, AS4087 PN35 and AAP Plate Flat Face Flange, AS4087 PN16.
Couldn't load pickup availability
Secure Checkout. We do not store credit card details
-
4"
Model Number: 4087BPN2194
-
6"
Model Number: 4087BPN2196
-
8"
Model Number: 4087BPN2198
-
10"
Model Number: 4087BPN21X25
-
12"
Model Number: 4087BPN21X30
-
16"
Model Number: 4087BPN21X40
-
18"
Model Number: 4087BPN21X45
-
20"
Model Number: 4087BPN21X50
-
24"
Model Number: 4087BPN21X60
-
30"
Model Number: 4087BPN21X75
-
36"
Model Number: 4087BPN21X90
-
48"
Model Number: 4087BPN21X120
