BS&B

BPAV™ Buckling Pin Relief Valve

Buckling pin relief valve available in sizes from 1" x 1.5" to 8" x 10" (25mm x 40mm to 200mm x 250mm), with set pressures from 15 to 3,500 psi across liquid and gas/air service. Back-pressure independent, and can be externally reset in minutes without opening the pipeline.

Size range: 1" x 1.5" to 8" x 10" (25mm x 40mm to 200mm x 250mm)
Set pressure range: 15–3,500 psi (varies by size/orifice)
Media: Liquid and gas/air
Discharge coefficient (Kd): 0.8 (gas), 0.686 (liquid)
Operating-to-set pressure ratio: 95% minimum
Reset method: External reset in minutes, no need to open pipeline
Certifications: ASME "UD" stamped (Section XIII); CE marked (PED)
Back pressure: Independent; suitable for variable or constant back pressures
Service: Hazardous service (limits operator exposure); continuous processing

BPAV™ liquid capabilities

geser →

Inlet size	Outlet size	Flow area*	Orifice (designator) diameter	Set pressure range
1 NPS	1.5 NPS	0.72 sq in	0.957 in	2100 – 3500 psi
1 NPS	1.5 NPS	0.86 sq in	1.046 in	50 – 2100 psi
1.5 NPS	2 NPS	2.04 sq in	1.612 in	15 – 1440 psi
2 NPS	3 NPS	3.36 sq in	2.067 in	15 – 720 psi
3 NPS	4 NPS	7.39 sq in	3.067 in	15 – 720 psi
4 NPS	6 NPS	12.73 sq in	4.026 in	15 – 720 psi
6 NPS	8 NPS	28.89 sq in	6.065 in	15 – 275 psi
8 NPS	10 NPS	50.03 sq in	7.981 in	15 – 275 psi

*Minimum Net Flow Area (MNFA)

BPAV™ air capabilities

geser →

Inlet size	Outlet size	Flow area*	Orifice (designator) diameter	Set pressure range
1 NPS	1.5 NPS	0.72 sq in	0.957 in	2100 – 3500 psi
1 NPS	1.5 NPS	0.86 sq in	1.046 in	15 – 2100 psi
1.5 NPS	2 NPS	2.04 sq in	1.612 in	15 – 1440 psi
2 NPS	3 NPS	3.36 sq in	2.067 in	15 – 720 psi
3 NPS	4 NPS	7.39 sq in	3.067 in	15 – 720 psi
4 NPS	6 NPS	12.73 sq in	4.026 in	15 – 720 psi
6 NPS	8 NPS	28.89 sq in	6.065 in	15 – 275 psi
8 NPS	10 NPS	50.03 sq in	7.981 in	15 – 275 psi