FLUID CONTROL

Pressure

Automotive

Safety

Calibration

Highly engineered valves

Reliable. Innovative.

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SCHRADER INTERNATIONAL is the worldwide leader in automotive and industrial valves and in sensing technologies.

Schrader means fluid control and pressure management for a large range of fluids such as air, nitrogen, air-conditioning gas, water, fuels, oils...

Schrader designs and produces highly engineered valves such as charging valves, safety valves, check valves, pressure regulators, safety connectors for many applications: Automotive, Truck & Bus, Heavy Duty/Off Road, Aeronautics, Energy, Industrial/Manufacturing & plant equipment...

RESEARCH AND DEVELOPMENT, LABORATORYAND INNOVATION GROUP

Custom Engineering and Design for fluid control valves and sensing technology:

‘‘We Can Design, Prototype and Manufacture That For You’’

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CORE DESIGN COMPETENCIES INCLUDE:

Concept, design, prototyping and manufacturing services for valves & sensing applications

A team of experts ready for your fluid control system needs. Experts in flow analysis, Finite Element Analysis, materials (metal, rubber and plastic...), mechatronics...

Risk assessments during the development project: functional analysis, Design Failure Model Effect Analysis, Advanced Product Quality Planning, Design Validation Plan...

Specialists in diverse segments such as heavy-duty vehicles, automotive, aeronautic and industrial applications.

3D Solid Modeling: Catia, Inventor

Flow analysis: CF Design

Helium leak testing

Vibration testing

Pressure testing

High-speed spin chambers

Finite Elements Analysis

Salt Spray

Thermal chamber testing

Flow testing

Vacuum testing

Ozone testing

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SHUT-OFF VALVES

Features:

Shut-Off Valves allow permanent or temporary access into a pressurized circuit or tank.

The Schrader Shut-Off range is able to satisfy a great majority of life cases.

Strengths:

Well known products by Schrader.

• Robustness regarding the specification submitted• Large range of part numbers for different applications• Cost efficient• 100% air leak control

Examples of applications:

• Air conditioning system filling port, including vacuum stage• Fuel module coupling port• Engine purge valves• Engine service valves• Pressure accumulator• Gas springs

For more details, please refer to our documentation PU162

Technical specification:

• Opening Pressure: 0.99 / 750 bar• Temperature range: -40°C / +180°C• Flow rate: 6 m3/H - 35 m3/H under 7 bar• Tightness: 0.206 cc3/min under 6 bar

example: less than 1 gr CO2 /year in an AC system• Assembly: screwed or pushed (highly recommended for a plastic body)• Fluid: gaseous or liquid

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CHECK VALVES

Features:

A check valve is added on the circuit to avoid any back flow.

Schrader check valves are delivered as a: • Cartridge directly fitted in a hose or pushed in a (plastic, aluminum…) cavity • Hose to Hose device

In both case, the check valve core technology is the same.

Technical specification:

• Opening pressure: according to the dynamic requirement

• Temperature range: -40°C / +200 °C• Flow rate: designed according to the

specification• Tightness: Schrader has developped a

specific software which allows to design the right tigthness according to the life conditions

• Dimensions: according to the drop pressure requested

• Fluid: gaseous or liquid

Strengths:

Thanks to Schrader Technology, one poppet and one spring are sufficient to satisfy most of the specifications. Included high frequency flow change till 20 Hz during millions cycles.

Examples of applications:

• Fuel circuit ( gasoline or diesel)• Air conditioning system• Hydraulic circuit• All types of pump…

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PRESSURE REGULATOR

Features:

Schrader Pressure Regulator maintains a constant pressure for any fluid. A constant pressure improves the system efficiency. Thanks to an innovative technology, Schrader Pressure Regulators are able to ensure a constant pressure with low hysteresis in a large flow range with few components.

The design fits with a:• Cartridge directly fitted in a hose or pushed in a plastic, aluminum… cavity • Hose to Hose device

The innovation consists of:

‘‘Schrader has developped a specific spring which allows to have a double guiding of the piston into the body without any additional component. This is thanks to a cylindrical conical spring (see below the cut view). This guiding is essential to have a good pressure regulation and a good sealing. The regulated pressure is calibrated by welding or screwing the back cap. The cylindrical conical spring allows also to have higher flow through the valve. The special square seal mounted on the piston ensures an accurate closing pressure and high performances of tightness.

The value analysis is optimum, the functionalities are guaranteed with few simple components and consequently the cleanliness is improved.

Strengths:

• Few components: cost advantages and high reduction of risk of pollution• Constant pressure with low hydraulic pulsation sensitivity• Large flow regulated• Can be manufactured with injected of machined raw material• 100% calibrated and controlled during assembly process• Gas tight

Schrader is able to adapt the design to meet a large range of specification for regulated pressure and flow.

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Technical specification:

• Diesel regulation• Opening Pressure: +5 bar• Hysteresis: 0.2 bar• Flow: 100 L/hour• Gas tight• The air tightness is 100% controled on the assembly line, and the regulator is 100% calibrated at the right opening pressure on the line

PRESSURE REGULATOR

Example of hose to hose Pressure Regulator:

Example of integrated Pressure Regulator withthe cylindrical conical spring:

Technical specification:

• Diesel regulation• Opening Pressure: +4 bar• Flow: 50 L/hour• Gas tight• The air tightness is 100% controled on the assembly line, and the regulator is 100% calibrated at the right opening pressure on the line

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Safety solutions: PRESSURE RELIEF VALVE

Strengths:

• Low hysteresis• Very low permeability: for example with R-744 gas, less than 1 g /year in an AC system• Several opening and closing: reusable

product compared to a burst disc and notfatigue sentitive

• 100% calibrated and controlled during assembly• High temperature resistance

Examples of applications:

• High Pressure Rail Engine• Air-conditioning circuit and Air-conditioning compressor

Technical specification:

• Opening pressure: e.g. 120 bar - 160 bar ±10 bar• Hysteresis: e.g. 15 %• Temperature range: -30°C / +180°C• Flow rate: based on specification• Air tightness: for example with R-744 gas, less than 1 g /year in an AC system• Dimensions: M12 or M14• Height: 28 mm• Fluid: air-conditioning gas (R-134a, R-1234, CO2), fuel (gasoline - diesel), gaseous or liquid

Features:

Schrader Pressure Relief Valves protect circuits from overpressure.The gas exhaust is fast and the PRV is indicated by a flag the opening.

All these charateristics can be adjusted to a customer need.

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Safety solutions: ACTIVE MAGNETIC PRESSURE RELIEF VALVEOR ACTIVE MAGNETIC BURST VALVE

Features:

Protect your pressurized circuit or tank with an innovative combinated safety valve.

The Schrader valve: • Protects your system from over-pressure • Discharges your circuit at your request

The valve is activated by an over-pressure and thank to an innovative magnetic technology, the valve can be also activated by power supply. A power ≤ 3A during 50 ms is enough to activate the valve.

Technical specification:

• Opening pressure: 5 - 600 bar• Temperature range: -30°C / +160°C• Hysteresis: 10% opening pressure (PRV only)• Flow rate: opened section 1.....9 mm diameter according

to the pressure level• Electric description: intensity and time 3A during 50 ms• Fluid application: gas or liquid. Gas tightness• Length: 50 mm• Diameter: 33 mm

Strengths:

• Very robust• Not cycling sensitive• Not temperature sensitive• Calibrated at the requested opening pressure• 100% controled during the process• Combinated functions

Examples of applications:

• Air conditioning - CO2 line• Gas tank• CNG tank

12V / 3A - 50 ms

Solenoïd

PRV

Permanent magnet

Ferromagnetic

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SAFETY VALVES FOR PRESSURIZED TANK

Features:

According to the Safety functional analysis, Schrader solutions are able to manage:

Full gas exhausted or only the exceeded pressure (passive function): PRESSURE RELIEF VALVE

Full gas exhausted (multipoint passive function):THERMAL RELIEF VALVE

Full gas exhausted (active function or passive shock valve): SHOCK RELIEF VALVE

Over pressure

Fire in the vehicle

Accident or dysfunction

Normalconditions

Overpressure Overpressure & compensation

FireCompensation

Strengths:

One valve with several functions combined or not:

• Over Pressure Management: Schrader technology is not fatigue sensitive (no burst disk) and is able to release all the fluid or only the exceeded pressure.• Over Temperature Management: Schrader technology is able to be sensitive in a large area (2 meters length) and is able to release several capacities in the meantime.• Exhaust on demand or in case of choc: Thanks to Schrader technologies, one or several pressurized capacities can be released with only one active valve or a passive Schrader shock valve.

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SAFETY VALVES FOR PRESSURIZED TANK

PRESSURE RELIEF VALVE - PRV: Protection in case of over pressure

Over pressure may happen in the tank when there is:• an overload of gas in the circuit• an increase of the temperature• a squashing of the tankThen to design properly a pressurized tank, it is necessary to locate a PRV in the area where neither device could isolate the safety valve from the tank. Depending on the risk analysis, the PRV could limit the pressure of exhaust totally the gas. For both solutions, Schrader manufactures technologies which are 100% calibrated for the opening pressure on the assembly line, non-sensitive to cycling and checked for the opening pressure even after a gas exhaust.

PRESSURE THERMAL RELIEF VALVE -PTRV: protection in case of fire and over pressure

To detect excessive temperature in a specific area, Schrader has designed, base on a fuse tube which follows the cylinder areas to control potential over temperature. Then it is not anymore necessary to implement safety valves at each ends of the tanks. The principle is as follows: the fuse tube is filled with a liquid under constant pressure. The liquid’s pressure is created by a piston-spring system then this pressure is independent of the gas’s pressure. And the advantage is that the fuse tube burns at the requested temperature. When the tube melts, the liquid is exhausted then the piston moves back. Consequently, the gas sealing system is released. The stored gas is exhausted through an opened area then can be collected. A calibrated PRV function is included in the valve.

SHOCK RELIEF VALVES: Protection in case of accident

Most of the time, fire on vehicle are due to an accident which creates damages on the inflammable circuits. To allow that the gas of the tank is exhausted before that the fire achieves the tank, the key is to exhaust gas when an excessive deceleration happens. That’s why Schrader proposes a ‘‘shock’’ valve which is able to stay definitely opened in case of shock on the vehicle. Thus, in case of deceleration higher than a deceleration coming from a braking, the shock valve opens and creates a purge of the liquid stored in the fuse tube, if it is associated with a pressure thermal safety relief valve and if not, there is only a purge of the gas. This valve is 100% calibrated and 100% checked and thank to its design, the valve is not sensitive to cycling.

Schrader proposes different valves, combined or not as follows:

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CONNECTORS

Features:

Connectors must be:

• Safe. Appropriate position controlled by a Poka Yoke• Easy to fit by the OEM and/or by Tier 1• Disconnection with a tool or not• Robust regarding temperature, pressure & temperature cycling, vibrations...• Large enough to avoid any added drop pressure• Cost efficient• The connectors exist with additional functionalities: Shut off Active functions Sensors Access valve

Strengths:

Thanks to patented technologies, Schrader connectors are robust, fast fitted and cost efficient. Feel free to ask Schrader for a technical presentation to understand how these functionalities are assumed.

Schrader uses innovative metal clip which allows to achieve all the functionalities with only one component.

Examples of applications:

• Fluid transfer• Fuel line couplers• Adblue line• CNG couplers

Technical specification:

• Pressure range: -1 / +700 bar • Temperature range: -30°C or -40°C / +160°C (180°C)• Flow rate: Design according to the specification• Tightness: 100% controlled• Dimensions: small as possible according to the requested functionalities• Fluid: gaseous or liquid

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Custom Engineering and Design for fluid control valves and sensing technology:

‘‘We Can Design, Prototype and Manufacture That For You’’

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460 machines for:

• Machining: CNC, multi-spindle and transfer machining equipment

• Plastic molding

• Rubber overmolding

• Assembling and automatic airtightness control and pressure calibrations

Quality with a Purpose:

• Schrader Quality means defect-free• Highest-quality solutions

via high automation• Proven track record

• Trusted partner

MANUFACTURING EXCELLENCE

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CERTIFICATIONS

www.SchraderInternational.com

Schrader s.a.s. - B.P. 2948, rue de Salins - 25301 Pontarlier cedex - France

Tél. :+33 (0) 381 38 56 56 - Fax : +33 (0) 381 46 41 42E-Mail : oe.info@schrader.fr

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