National Flow Systems supply valves from Ball valves and Butterfly valves to Control valves, Diaphragm valves, Knife gate valves and Check valves. Representing all the major manufacturers we have a considerable stock holding for quick delivery to most places in Australia.
Our high quality valves are industry leading with competitive pricing. Whether you are involved with Chemical Manufacture, Oil and Gas, Mining, Energy Generation or Municipal Water Supply, NFS has what you need. With over 40 years exposure to the valve industry National Flow Systems will support you however small or large your project.

Knife Gate Valves
Knife gate valves are operated by actuation and NFS has an actuator solution to suit.
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Diaphragm Valves
NFS offers range of Diaphragm Valve types designed for corrosive and abrasive applications
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Ball Valves
NFS has Stainless Steel Ball valves of all sizes with flange or threaded connections.
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Check Valves
NFS Duo Check Valves include 316SS disc and EPDM seats. Sizes 50mm – 300mm in stock.
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Butterfly Valves
NFS Butterfly Valves 316SS disc and EPDM seat, available in Table D, E or wafer. Sizes 50mm – 300mm in stock.
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NFS supplies industrial valves of high quality with quick lead times in Newcastle, Muswellbrook,Central Coast,Hunter Valley,and Port Stephens.
If you have questions about our valves and actuators, NFS staff are happy to help with your enquiry.
Call National Flow System in NSW Today!