1904 Valstop Brass Spring Check Valve NBR Seals

A heavy pattern brass spring check valve with wear-resistant NBR seals, with a streamlined flow design to reduce operating noise and minimise head loss in non-potable water installations. The stainless steel spring and wear resistant jumper provide an excellent seal at a good range of pressures and temperatures, preventing unwanted reversal of flow.

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Series 1904 Valstop Brass Spring Check Valve NBR Seals

Design Features

Body in high quality forged brass
NBR seals for long-lasting wear resistance
Robust heavy pattern design for superior performance
Quality materials provide wear resistance and long service life
Streamlined flow design minimises head loss
Excellent seal at a wide range of temperatures and pressures
Quiet operation and reduction in water hammer

Production

Manufactured in Italy under ISO 9001 Quality Management System
All valves are pressure tested during production

Technical

Size range: DN8 (1/4") to DN100 (4")
Female ISO 7/1 Rp (BSPP) threaded connections
Temperature range: -20°C to 70°C
Max. pressure: DN8-15 4000 kPa, DN20-25 3000 kPa, DN32-50 2500 kPa, DN65-100 1600 kPa (refer to graph)
Cracking pressure: 2.5 kPa
Installation orientation: horizontal or vertical
Not WaterMarked and not suitable for installations that must be AS/NZS 3500 compliant (drinking or non-drinking water)

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Specification Sheet

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