BPCV™ Buckling Pin Relief Valve

A Buckling Pin Common Valve – Designed with same inlet and outlet piping configurations.

BPCV™ Buckling Pin Relief Valve

Performance Features

  • Sizes from 1 x 1" to 14 x 14" (25mm x 25mm to 350mm x 350mm)
  • A back pressure independent device that is suitable for variable or constant back pressures
  • Ideal for pump bypass applications
  • Externally reset in minutes, without the need to open the pipeline
  • Continuous processing (fast inline external reset)
  • Hazardous service (limits operator exposure)
  • High flow capacity – no orifice design with high Kd of 0.706 for Gas and 0.617 for Liquid
  • High operating pressure to set pressure ratio, 95% on minimum.
  • ASME "UD" stamped, section XIII
  • European Pressure Equipment Directive "CE" marked

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  • Set Pressures
  • Tolerance
  • Materials & Accessories
  • Documentation

Set Pressures

BPCV™ Capabilities
Inlet Size Outlet Size Flow Area Orifice (Designator) Diameter Set Pressure Range Media
1 NPS 1 NPS 0.72 sq in 0.957 in 2100 - 3500 psi Gas / Liquid
0.86 sq in 1.046 in 50 - 2100 psi Gas / Liquid
1.5 NPS 1.5 NPS 2.04 sq in 1.612 in 15 - 1440 psi Gas / Liquid
2 NPS 2 NPS 3.36 sq in 2.067 in 15 - 720 psi Gas / Liquid
3 NPS 3 NPS 7.39 sq in 3.067 in 15 - 720 psi Gas / Liquid
4 NPS 4 NPS 12.73 sq in 4.026 in 15 - 720 psi Gas / Liquid
6 NPS 6 NPS 28.89 sq in 6.065 in 15 - 275 psi Gas / Liquid
8 NPS 8 NPS 50.03 sq in 7.981 in 15 - 275 psi Gas / Liquid
10 NPS 10 NPS 78.58 sq in 10.020 in 15 - 275 psi Gas / Liquid
12 NPS 12 NPS 113.10 sq in 11.938 in 15 - 275 psi Gas / Liquid
14 NPS 14 NPS 137.89 sq in 13.124 in 15 - 275 psi Gas / Liquid

Burst Tolerance

Marked Burst Pressure Burst Tolerance
> 40 psig (> 2.7 barg) ± 5%
< 40 psig (> 2.7 barg) ± 2 psi
Operating Pressure Ratio 90% of set point over 1.38 barg; 90% of minimum below 1.38 barg.

Dimensions

Size ØD1 K1 K2 T1 H (approx.) W1 (approx.) W2 (approx.) ØD2 T2 Weight (approx.)
in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm lbs
1 x 1 25x25 1.05 26.7 3.69 93.7 3.69 93.7 0.688 17.5 20 508 8.21 208.5 6.5 165.1 1.05 26.7 0.688 17.5 50
1.5 x 1.5 40x40 1.61 40.9 4.69 119.1 4.69 119.1 0.813 20.6 22 558.8 9.34 237.2 8 203.2 1.61 40.9 0.813 20.6 80
2 x 2 50x50 2.07 52.5 5 127 5 127 0.88 22.3 22.2 563.8 9.52 241.8 8.6 218.44 2.07 52.5 0.88 22.3 85
3 x 3 75x75 3.07 77.98 6.13 155.7 6.13 155.7 1.18 29.9 31 787.4 11.1 331.4 10.96 278.3 3.07 77.98 1.18 19.9 200
4 x 4 100x100 4.03 102.4 7.12 180.8 7.12 180.8 1.25 31.7 37.1 942.3 12.34 313.4 12.55 318.7 4.03 102.4 1.25 31.7 310
6 x 6 150x150 6.07 154.2 9.12 231.6 9.12 231.6 1.5 38.1 49.9 1267.4 16.64 422.6 16.14 410 6.07 154.2 1.5 38.1 610
8 x 8 200x200 7.98 202.7 11 279.4 11 279.4 1.68 42.6 58 1473.2 19.25 489 18.69 474.7 7.98 202.7 1.68 42.6 875
10 x 10 250x250 10.02 254.5 12.5 317.5 12.5 317.5 1.93 49 64 1625.6 23.28 591.3 22.27 565.6 10.02 254.5 1.93 49 1600
12 x 12 300x300 12 304.8 14.5 368.3 14.5 368.3 2.06 52.32 70 1778 26.28 667.5 23.78 604 12 304.8 2.06 52.32 2200
14 x 14 350x350 13.25 336.6 16 406.4 16 406.4 2.18 71.1 72 1828.8 29.77 756.1 27.75 704.8 13.25 336.6 2.18 71.1 3515

Materials of Construction

Minimum Standard Materials
  Carbon Steel Stainless Steel Low Temp Carbon Steel
Body ✓ ✓ ✓
Disc and Spindle (Internals)   ✓  
Alternative Materials availabile upon request, e.g Inconel 625, Duplex, Supler Duplex

Accessories

BS&B supplies many of the Accessories required to safely and conveniently install our overpressure relief devices and complementary products. Through our professional team and global network of sales engineers and procurement personnel, we are able to provide the highest quality accessory products to meet your installation requirements.

Saf-T-Pin™ Buckling Pin Cartridge

The BPAV can be provided with buckling pin cartridges that are installed like an electrical fuse. The Saf-T-Pin buckling pin cartridge allows a “quick-change” option of buckling pins with a simple push-in/pull-out design for installation within the enclosure. Each Saf-T-Pin cartridge contains a calibrated buckling pin that is perfectly mounted for optimum performance.

Replacement Buckling Pins

Stainless steel pins with tags containing pressure and traceability information including the serial number of the BPAV device.

Product Literature

Buckling Pin Pressure Relief Technology Brochure

Installations

BPCV™ Installation Instruction