Catalog #77-7011

Pressure Safety Management
for e-mobility Systems

www.bsbsystems.com | www.bsb.ie

BS&B manufactures battery pack and cellpressure relief eVents used for the battery
mobility market. We offer a personalized
approach for each project to ensure flexibility in design and burst pressures. Many
BS&B customer projects require customized solutions. We take great pride in“solving the impossible”. Our custom engineered products team rallies around
decades of machining experience, mostrecently 3-D printing, to offer inexpensive
tooling solutions for new pressure reliefproducts.

Custom Engineered Products: Application Solutions
Certifications
Temp. Testing
Leak Testing
and more

Battery Vent
TypeApplication
Interface

Application
SolutionOptions

Battery Vent TypeRupture Disk Type

2Pressure Range

Size Range

FRBTM

from 10 psig to 900 psig
(from 0.69 barg to 62.05 barg)from 1/8” to 1”(from 3mm to 25mm)

LPSTM

from 3 psig to 70 psig
(from 0.2 to 4.83 barg)from 1” to 4”(from 25mm to 100mm)

HLTM

from 0.73 psig to 16 psig
(from 0.05 barg to 1.1 barg)
breathable and non-breathable

from 3/4” to 3”(from 19mm to 80mm)GTM

from 1.5 to 29 psig
(from 0.1 to 2.0 barg)from 1/4” to 3”(from 6mm to 80mm)

Application Interface
ThreadedSnap-fit
ClampedQuarter-turnBoltedAdhesive
Bonding

Options
PACKAGING

INVENTORYMANAGEMENTMARKINGON DEMANDACTIVATION

CLEANING

LEAK TESTINGFAST PROTOTYPINGFLAME ARRESTERS

CERTIFICATIONSVALIDATIONTESTINGTEMPERATURETESTING

BURST ALERT SENSORS

3

FRB

™

Battery manufacturers rely on the eVent FRB™ lithium cell for overpressure
protection due to its small size, low-pressure capabilities, and fast responsetime (milliseconds). From 1/8” (3mm) to 1”(25mm) Nominal flow diameters, and 10 psig (0.7 barg) to 900 psig (62 barg) activation pressures,
the FRB is the perfect solution for your lithium cell design requirements.

ActivatedFeatures

BS&B also offers the added advantage of integrating the FRB disk withlaser welding expertise, and with the Prototype Introduction Track “PIT”
program, BS&B supports your lithium cell and pack development program with fast completion of your initial welded cell prototypes.

• Standard sizes: 1/8, 1/4, 3/8, 1/2, 3/4 and 1 inch(3, 6, 9, 12, 19 and 25 mm)• Pressure ratings from 10 to 900 psig (0.7 to 62 barg)• Full opening along circular score• Solid metal, reverse buckling technology• Standard materials: stainless steel, nickel 200,Inconel® 600, and aluminum• Standard and custom holder designs are available• Low volume, starting at one unit
• High volume, automated manufacturing

B

FLOWA

A
NominalSize
Flow Diameter

B
Outside Diameter Options

inmm

mm

inmm

1/8

3 0.125 3.175

0.312

7.925

1/4

6 0.215 5.461

3/8

9 0.350 8.890

1/2 12 0.525 13.3350.500, 0.550
0.670, 0.750,0.935, 1.0000.935, 1.000

12.700, 13.970
17.018, 19.05,
23.749 , 25.400
23.749, 25.400

3/4 19 0.787 19.990

1.181

29.9971.425, 1.500

36.1951in

25 0.95 24.130

These dimensions are for information only, exact FRB disk installation design shall be
determined by BS&B for each application.

FRB Battery eVent Burst Pressure Capabilities Rated at 72°F (22°C)
Disk Material*

Disk Size

Nickel 200
min

4Inconel® 600
max

min

316ssmaxmin

Aluminummax

min

max

inmm

psigbarg

psigbarg

psigbarg

psigbarg

psigbarg

psigbarg

psigbarg

psig

1/8

3200

13.79

500

34.47

250

17.24

850

58.61

300

20.68

900

62.05

125

8.62 400 27.58

1/4

6100

6.89

450

31.03

150

10.34

800

55.16

150

10.34

850

58.61

60

4.14 300 20.68

3/8

950

3.45

400

27.58

60

4.14

750

51.71

60

4.14

800

55.16

35

2.41 250 17.24

1/2

13

35

2.41

200

13.79

45

3.10

650

44.82

45

3.10

675

46.54

25

1.72 200 13.79

3/4

1920

1.39

100

6.89

25

1.72

325

22.40

25

1.72

360

24.82

15

1.03 100

6.89

125

100.6965

4.48

151.03160

11.03

151.03

190

13.10

10

0.69

3.4550barg

LPS™

The eVent LPS™ provides low burst pressures starting at 3 psig (0.2 barg).
The LPS is a reverse buckling metal rupture disk using SAF™ technology,
which enables low burst pressures to be achieved while maintaining excellent opening characteristics.
BS&B offers a variety of choices for application interface designs using LPS
rupture disk technology including: plastic body; metal body; cassette; snap
fit; quarter-turn; and adhesive bonding.
BS&B partners with you to solve overpressure requirements for pressurizedsystems. Solutions may include off-the-shelf assemblies or customized designs
requiring unique sealing and interface options to meet the constraints
placed by the assembly and production of your products. You can count on
BS&B as your team member to help guide you through the pressure relief
selection process. It's what we do.
LPS technology is validated for many conditions including:• Burst Pressure Performance• Effective Sealing• Advanced Life Pressure Cycle Testing• Mechanical Shock Drop Testing• Random Vibration Endurance Test
• Salt Spray with Humidity Functional Endurance Test
• Fluid Corrosion• Tested for many types of automotive related fluid• Climatic Sequence Testing• Thermal Life Test

ActivatedFeatures• Solid metal design provides leak tight performance• Low burst pressure capability from 3 psig (0.2 barg)• Fail safe: Damage Safety Ratio ≤ 1• Designed for non-fragmentation• High operating ratio: 90% of minimum burst pressure• High backpressure resistance• Defined vent area
• Custom designs available (examples below)• Stainless steel and aluminum construction

LPS technology has been used for battery industry applications
for over 10-years.

LPS Battery eVent Burst Pressure Capabilities Rated at 72°F (22°C)
Disk Size
inmm

Nickel Alloy 200
psig

Monel® Alloy 400,Inconel® Alloy 600 andTantalum

316ss

barg

psig

barg

psig

Hastelloy® Alloy C-276

barg

psig

Aluminum

barg

psig

barg

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

125

1570

1.03

4.83

1570

1.03

4.83

2070

1.38

4.83

1570

1.03

4.83

----

1.5

40

655

0.41

3.79

655

0.41

3.79

1055

0.69

3.79

755

0.48

3.79

----

250

540

0.34

2.76

540

0.34

2.76

840

0.55

2.76

640

0.41

2.76

30.20

0.55

2.76

380

535

0.34

2.41

535

0.34

2.41

735

0.48

2.41

535

0.34

2.41

2.5

35

0.17

2.41

4100

530

0.34

2.06

530

0.34

2.06

730

0.48

2.06

530

0.34

2.06

2.5

30

0.17

2.06

5

HL

™

The eVent HL is a reverse buckling plastic rupture disk that combines optional air breathing capability with accurate pressure relief. Burst pressure
is controlled by a calibrated metal support arch which retains the plastic
domed rupture disk under normal operating conditions. The assembly istypically injection moulded engineered plastic. The general design andmethod of assembly is customizable to meet specific customer needs. eVent
HL provides an immediate high flow rate under overpressure relief conditions. There are two options available in relation to the plastic domed rupture disk – breathable and non-breathable PTFE. The patented control archis typically stainless steel.

Features• Reverse buckling plastic rupture disk with metalarch provides accurate pressure relief• Instant flow area provides fast pressure relief• Low burst pressure from 0.73 Psig (0.05bar)• Temperature stable• Breathable and non-breathable options available• Size range: 3/4”- 3“(19 mm – 80 mm)• Water entry pressure > 500 mbar
• Withstands up to 1m water backpressure• Defined vent area
• Custom designs available• Plastic or metal housing• Environmental performance compliance:• IP6KX, avoid dust ingress• IPX6K, avoids pressure wash water ingress• IPX69K, resits steam cleaningUS & International Patent Pending.

6The eVent HL has an integrated cutting member, precision engineered metalarch, and PTFE seal. During an overpressure event, the arch reverses, allowing the seal to be pierced. Burst pressure is controlled by arch design andmaterial thickness.
The eVent HL breathable vent is intended for battery packs with weak flexible containers that must be stabilized close to atmospheric pressure (e.g.
+/- 20 mbar) while also performing as an emergency venting device in caseof fire or other overpressure generating event. A sintered PTFE seal provides
a water tight barrier while allowing air to pass through the rupture diskdome.
The eVent HL non-breathable vent can be used alone or in combination withindependent breather vents.

G™

graphite rupture disks
The eVent G is manufactured from high quality graphite blended with an environmentally friendly resin to achieve a leaktight material structure. With its low tensile strength, eVent
G material achieves a very low burst pressure capability. TheeVent G can provide a very compact battery vent design as
the material remains almost flat until the moment of overpressure activation. The eVent G is customizable and available
in a variety of designs to meet different nominal sizes andoverpressure relief requirements.
The eVent G assembly can be produced with either metal orplastic housing components, or even a combination of metaland housing. The leak tightness of the rupture disk and control
of its burst pressure is achieved through proper engagementwith its housing.

Features• High quality graphite design• Low burst pressure capability from 			
1.5 psig (0.1 bar)
• Thermally stable burst pressure• Nominal sizes from ½” to 4" (12mm to 100mm)• Full Opening upon activation• Compact assembly design• Custom designs available

7

PIT™ PROGRAM(Prototype Introduction Track)

Similar to a Race Car Pit Team, the BS&B Prototype Introduction
Track combines special skill sets to work in unison with thecommon goal of giving the customer an excellent prototypeorder experience.
• Rapid response Prototype Introduction Track• Schedule management to assure on time performance• Focus on your needs, not a ‘cookie cutter’ approach• Engineering engagement throughout• Plan For Success™ approach• Access to Engineering and Quality from design to delivery

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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 fitness for a particular purpose.

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