ESA Proba-2 .
Picture Gallery
Contact

Nigel Kay

General Manager

MAIL 36 Central Way, Cheltenham Trade Park, Cheltenham, GL51 8LZ, UK
EMAIL nigel.kay@nammo.com
TEL +44 7714 322866

NAMMO CHELTENHAM

GENERAL CAPABILITIES

  • Dedicated, skilled space engineering team
  • Experienced Assembly Integration and Test team
  • Program Management

QUALITY AND INSPECTION

  • Certified to AS9100
  • Inspection department including CMM and optical measuring equipment
  • Laser part marking
  • Complete traceability of inspection records
  • Material traceability from original mill source to final components

CLEANROOM and ENVIRONMENTAL TESTING

  • ISO Class 8 environment, with Class 5 laminar flow booths
  • Large 1m diameter x 2m long Vacuum chamber
  • Thermal vacuum chambers
  • Thrust test facility
  • Vacuum/leak testing and pressure testing.
  • Air borne and liquid Particle measurement.
  • Pressure Test facility to 1500 bar
  • Computer controlled TIG and Orbital TIG weld facility
Location

Nammo Cheltenham Unit 36, Enterprise Way, England, GL51 8LZ, United Kingdom

Datasheet

2021 Nammo Cheltenham High Pressure In-line Flow Control Valve

High Pressure In-line Flow Control Valve

The well-established ‘SVS01’ is family of in-line Flow Control Valves which have been flying for more than twenty years. 

Picture Gallery
Contact

Nigel Kay

General Manager

MAIL 36 Central Way, Cheltenham Trade Park, Cheltenham, GL51 8LZ, UK
EMAIL nigel.kay@nammo.com
TEL +44 7714 322866

NAMMO CHELTENHAM

GENERAL CAPABILITIES

  • Dedicated, skilled space engineering team
  • Experienced Assembly Integration and Test team
  • Program Management

QUALITY AND INSPECTION

  • Certified to AS9100
  • Inspection department including CMM and optical measuring equipment
  • Laser part marking
  • Complete traceability of inspection records
  • Material traceability from original mill source to final components

CLEANROOM and ENVIRONMENTAL TESTING

  • ISO Class 8 environment, with Class 5 laminar flow booths
  • Large 1m diameter x 2m long Vacuum chamber
  • Thermal vacuum chambers
  • Thrust test facility
  • Vacuum/leak testing and pressure testing.
  • Air borne and liquid Particle measurement.
  • Pressure Test facility to 1500 bar
  • Computer controlled TIG and Orbital TIG weld facility
Location

Nammo Cheltenham Unit 36, Enterprise Way, England, GL51 8LZ, United Kingdom

Datasheet

2021 Nammo Cheltenham High Pressure In-line Flow Control Valve

A variant has now been developed to enable a MEOP of up to 120bar.  As with the low pressure variant, it is a mono-stable solenoid, using a single coil to energise the movement of a suspended sealing armature.  This assembly is located using a diaphragm spring to ensure a non-sliding fit.  The armature to seat profiles have been designed to minimise flow discontinuities, thereby reducing the susceptibility to contamination induced failures.

The valve uses a flat faced seal to reduce the risk associated with valve internal leakage due to a high cycle life.  When in the unpowered state, system pressure forces and a spring, work together to keep the armature held in the closed position.  The inlet filter rating and mechanical interfaces can be customised to suit the customer requirements.  The valve was used on the Proba 2 mission for ESA.

Performance Characteristics

  • Operating Media Xenon, GN2, GHe, CF4, Butane, Propane
  • Maximum Operating Pressure 120 bar
  • Proof Pressure 180 bar
  • Burst Pressure 300 bar
  • Flow Rate / Pressure Drop >15 l/min GN2 at 6 bar ΔP
  • Internal Leakage <1 x 10-3 scc/s GHe at 120 bar
  • External Leakage <1 x 10-6 scc/s GHe at 120 bar
  • Opening Response < 10 ms (at 24V and 120 bara)
  • Closing Response < 10 ms (at 34V and 2 bara)
  • Coil Resistance >41 Ω
  • Input Voltages <20 Vdc
  • Operating Cycle Life 300,000 cycles
  • Filter Rating 25 µm absolute
  • Wetted Materials AISI304L, Radiometal 4550, PTFE Grade 1 Type S
  • Hardware Mass 60 gram
  • Envelope 17.06 mm diameter
  • Electrical Interface Flying leads
  • Fluidic Interface Stub tube or threaded AS4395 fitting
    The interfaces can be customised based on the customer needs.
  • Technology Readiness Level TRL9

Status

The high pressure flow control valve is qualified and has flown on Proba 2.

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