Series 1904

Valstop Brass Spring Check Valve NBR Seals

1904 - Valstop Brass Spring Check Valve NBR Seals


  • Manufactured in Italy
  • Minimum head loss due to the streamlined flow design
  • Heavy pattern, full bore, high flow capacity
  • Excellent seal at low & high pressure, within a wide temperature range
  • Quiet operation and reduction in water hammer
  • Wear resistant and long lasting materials
  • Compact dimensions, superior performance and high quality
  • Can be installed in horizontal or vertical position
  • Not WaterMarked and not suitable for installations that must be
    AS/NZS 3500 compliant (drinking or non-drinking water)
  • All valves pressure tested during production
  • Size range: 6mm to 100mm



  • Temperature range: -20°C to 70°C
  • Maximum operating pressure at nominal temperatures:
  • 6mm to 15mm: 4000 kPa
  • 20mm to 25mm: 3000 kPa
  • 32mm to 50mm: 2500 kPa
  • 65mm to 100mm: 1600 kPa
  • Cracking pressure: 2.5 kPa

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