Buckling Pin Relief Technology
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Buckling Pin Pressure Relief Technology Visit our website for the most complete, up-to-date information

Specialty Valves Buckling Pin Pressure Relief Devices BS&B produces fast acting/quick opening buckling pin activated pressure relief devices (inline and angle discharge) designed to protect personnel, equipment and the environment from the dangers of overpressure. Buckling pin pressure relief devices combine the accuracy of rupture disks with the ability to be ‘fieldreset’ while remaining installed after an overpressure event. TM Inline sytle buckling pin valve BPRV buckling pin relief valve Our Core Values Innovation We grow by being first with innovative products, solutions and services...

Buckling Pin Relief Valve The BPRV offers the highest flow capacity and convenient in-line installation. After activation, the valve is manually reclosed and the pin replaced while the valve remains bolted between pipe flanges. This dramatically reduces plant downtime and personnel exposure. The pin is accessible in a lockable enclosure containing the BPRV mechanism. Valve sizes range from 2 inches (50mm) to 60 inches (1,500mm). Alternative, larger sizes available upon request. Size and Set Pressure Capability The BPRV is available with a standard range of sizes and set pressures designed...

3 Set Pressure Calibration Controls • The offset of the BPRV disk shaft from the center line: A large offset will generate a higher shaft load; a small offset will generate a lower shaft load. The BPRV is designed with the optimal offest based on set pressure requirements. • The buckling strength of the buckling pin: This is a function of the 4th power of the pin diameter, the modulus of elasticity of the pin material, and the inverse of the pin length. Buckling pin diameter is used for significant set pressure tuning, length adjustment is used for fine tuning. • The enclosure mechanism...

Customized BPRV Units/Command Activation • M600 mechanism: low torque applications typical for sizes 2-6 inches (50-150mm) • M4200 mechanism: Torque ranges typical for higher pressure 4 inch (100mm) BPRV devices through low pressure 24 inch (600mm) size • M16000 mechanism: for high torque requirements of BPRV devices sized 20-60 inches nominal size The mechanism front cover is provided with a latch tongue that aligns with another on the side to allow the user to add a preferred locking mechanism. Turn latches mounted on the front of the enclosure energize the door elastomer seal. BPRV-CAS...

The BPRV is designed for “in-line” installation between pipe flanges. Each device is a ‘full face’ design with the pipe flange bolting typically passing through the perimeter of the body. Some flange specifications have a compact bolting pattern that would interfere with the bushings or bearings if through bolt holes were used; in these cases, a threaded blind bolt hole is provided on both sides of the BPRV so a full set of flange bolts is installed. The piping may run horizontally, vertically, or at an oblique angle. The BPRV can be supplied set-pressure certified for any of these...

Quality Assurance Every BPRV is thoroughly tested before shipment. Pre-delivery inspection can be divided into: • Dimensional inspection • Leak tightness verification Optional Saf-T-Pin™ Buckling Pin Cartridge • Buckling pin calibration and set pressure testing The BPRV can be provided with buckling pin cartridges that are installed like an electrical fuse. The Saf-T-Pin buckling pin cartridge allows a “quickchange” 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...

BPIVTM buckling pin independent valve The BPIV is the same as the BPRV, but is back pressure independent Buckling Pin Inlet Valve The BS&B BPIV set pressure is controlled by a precision buckling pin which is calibrated to respond to the forces generated by inlet pressure acting on the valve disk independent of any back pressure that may be present. When the pin activates, the valve disk rotates to achieve a full diameter flow area. The BPIV has a soft seat. Standard valve materials are carbon steel and stainless steel for process contact components. Special materials are available upon...

Buckling Pin API-Series Valve The BS&B BPAV set pressure is controlled by a precision buckling pin that is calibrated to respond to the forces generated by inlet pressure acting on the valve plug. When the pin activates, the valve plug lifts to achieve a full diameter flow area. The BPAV has a soft seat. Standard valve materials are carbon steel and stainless steel for process contact components. Special materials are available upon request. • The first API-526 piping configuration buckling pin valve • 1 x 1.5 inches (25 x 40mm) to 8 x 10 inches (200 x 250mm); larger sizes available upon...

BPAV and BPAV-R air/gas Minimum burst pressure Maximum burst pressure BPAV and BPAV-R liquid Minimum burst pressure Maximum burst pressure

The BPPV is a buckling pin pilot valve ranging from 6 x 6 inches through 30 x 30 inches (150 x 150mm through 1,220 x 1,220mm) with a set pressure from 10 to 275 psig (0.69 to 18.96barg). Larger sizes to 48 x 48 inches are also available. Inlet size Outlet size Flow area Orifice (designator) diameter Code section Buckling Pin Pressure Relief Technology BPPVTM Buckling Pin Pilot Valve BPCVTM Buckling Pin Valve Common Inlet and Outlet Connection Size The BS&B type BPCV’s set pressure are controlled by a precision buckling pin which is calibrated to respond to the forces generated by inlet...

BSBSystems.com Visit our website for the most complete, up-to-date information Limerick, Ireland T: +353 61 517000 F: +353 61 309689 E: info@bsbflamearrester.ie BSB.ie Visit our website for the most complete, up-to-date information Products, specifications and all data in this literature are subject to change without notice. Questions regarding product selection and specifications for specific applications should be directed to BS&B. All sales are subject to the BS&B companies’ standard terms and conditions of sale. Nothing herein should be construed as a warranty of merchantability or...