Locations
Contacts

Thorstein Korsvold

Web & Content Manager (Corporate Press Contact)

MAIL P.O. Box 142, NO-2831 Raufoss, Norway
VISIT Enggata 37, 2830 Raufoss, Norway
EMAIL thorstein.korsvold@nammo.com
TEL +4741100055

Norway

Nammo AS

MAIL P.O. Box 142, NO-2831 Raufoss, Norway
VISIT Enggata 37, NO-2830 Raufoss, Norway
EMAIL info@nammo.com
TEL +47 61 15 36 00
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

Non-Return Valve

The Nammo Space Non-Return Valve is compatible with all standard propellants.

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

The Non Return Valve (NRV) is used to prevent the back flow and mixture of bi-propellant fuels in spacecraft propulsion systems.  Chemical propulsion systems need to show the flow of vapours from the propellant tanks to the helium pressurization system and between fuel and oxidiser tanks in a bi-propellant system.

During normal operation of the pressurisation system the valve opens at a predetermined cracking pressure to allow gaseous Helium (GHe) flow to pressurise the respective propellant tanks.  When the pressure differential across the valve in the normal flow direction reduces to a predetermined value the valve closes by the action of a preloaded spring thus preventing the reverse flow of gas or vapour when the pressure increases in the reverse flow direction.

 

Performance Characteristics

  • Operating Media GN2, GHe, NTO, MMH, N2H4
  • Maximum Operating Pressure 36 bar
  • Proof Pressure 72 bar
  • Burst Pressure 144 bar
  • Operating Temperatures -50°C to +50°C
  • Flow Rate up to 5g/s
  • Pressure Drop <0.15mbar for 0.24g/s GHe at 18 bar inlet
  • Internal Leakage <1 x 10-4 scc/s GHe at 120 bar
    with 10bar reverse pressure applied
  • External Leakage <1 x 10-6 scc/s GHe at 120 bar
  • Cycle Life >200,000 cycles
  • Filter Rating 15 µm absolute
  • Wetted Materials Ti Alloy, Stainless Steel, PTFE
  • Hardware Mass <90 gram
  • Envelope 57 mm diameter x 126 mm length
    including stub tubes
  • Fluidic Interface 1/4” or 3/8” tube stub (weldable)
    The interfaces can be customised based on the customer needs.
  • Technology Readiness Level TRL9

Status

The Nammo Space Non-Return Valve has flight heritage on the following platforms:

  • EuroStar 3000
  • SpaceBus 4000
  • AlphaSat
  • Veg Upper Stage AVUM