Check Valves

	Series 1907 Eurostop DZR Brass WaterMarked Spring Check Valve Size Range: 15mm to 100mm Temperature Range: -20°C to 130°C Max. Pressure: 1600 kPa Cracking Pressure: 2.5 kPa
	Series 1903 Valstop Brass Spring Check Valve Viton® Seals Size Range: 6mm to 100mm Temperature Range: -20°C to 135°C Max. Pressure: 6-15mm 4000 kPa, 20-25mm 3000 kPa, 32-50mm 2400 kPa, 65-100mm 1600 kPa Cracking Pressure: 2.5 kPa
	Series 1904 Valstop Brass Spring Check Valve NBR Seals Size Range: 6mm to 100mm Temperature Range: -20°C to 70°C Max. Pressure: 6-15mm 4000 kPa, 20-25mm 3000 kPa, 32-50mm 2400 kPa, 65-100mm 1600 kPa Cracking Pressure: 2.5 kPa
	Series 1909 Europa Brass Spring Check Valve Size Range: 10mm to 100mm Temperature Range: -20°C to 70°C Max. Pressure: 10-25mm 2500 kPa, 32-50mm 1800 kPa, 65-100mm 1200 kPa Cracking Pressure: 3 kPa
	Series 1911 Roma Brass Spring Check Valve Size Range: 10mm to 50mm Temperature Range: -15°C to 120°C Max. Pressure: 10-25mm 2500 kPa, 32-50mm 1800 kPa Cracking Pressure: 3 kPa
	Series 2807 1-Piece Stainless Steel Spring Check Valve BSP Threaded Size Range: 6mm to 25mm Temperature Range: -50°C to 420°C Max. Pressure: 6000 PSI (41,300 kPa) Cracking Pressure: 3 PSI
	Series 2808 1-Piece Stainless Steel Spring Check Valve NPT Threaded Size Range: 6mm to 25mm Temperature Range: -50°C to 420°C Max. Pressure: 6000 PSI (41,300 kPa) Cracking Pressure: 3 PSI
	Series 1940 2-Piece Stainless Steel Spring Check Valve Size Range: 6mm to 50mm Temperature Range: -20°C to 170°C Max. Pressure: 6300 kPa
	Series 4020 3-Piece Stainless Steel Spring Check Valve Size Range: 6mm to 100mm Temperature Range: -20°C to 230°C Max. Pressure: 5500 kPa
	Series 1802 Zetco WaterMarked DZR Brass Swing Check Valve Size Range: 15mm to 100mm Temperature Range: 0°C to 99°C Max. Pressure: 1600 kPa
	Series 1805 Bronze WaterMarked Swing Check Valve Size Range: 15mm to 100mm Max. Pressure at Nominal Temp.: Steam 1050 kPa @ 186°C; Water: 2500 kPa @ 99°C
	Series 1808 Bronze WaterMarked Swing Check Valve Flanged Size Range: 50mm to 100mm Max. Pressure at Nominal Temp.: Steam 700 kPa @ 170°C; Water 1600 kPa @ 99°C
	Series 4050 Stainless Steel Swing Check Valve Size Range: 10mm to 80mm Temperature Range: 0°C to 200°C Max. Pressure: 1600 kPa
	Series 4640 & 4641 Stainless Steel Flanged Swing Check Valve Size Range: 65mm to 100mm Max. Temp. at Nominal Pressure: 100°F @ 275 PSI (37°C @ 1900 kPa)
	Series 1806 Zetco Bronze WaterMarked Screwed Bonnet Lift Check Size Range: 15mm to 50mm Max. Pressure at Nominal Temp.: Steam 1050 kPa @ 186°C; Water 2500 kPa @ 99°C
	Series 1807 Bronze WaterMarked Union Bonnet Lift Check Stainless Steel Trim Size Range: 15mm to 80mm Max. Pressure at Nominal Temp.: Steam 1750 kPa @ 260°C; Water 4000 kPa @ -10°C to 120°C
	Series 1809 Zetco Bronze WaterMarked Vertical Lift Check Size Range: 15mm to 50mm Max. Pressure at Nominal Temp.: Steam 1050 kPa @ 260°C; Water 2500 kPa @ -10°C to 150°C
	Series 1558 5 Way Brass Tee Size Range: 25mm Temperature Range: 0°C to 99°C Max. Pressure: 2100 kPa

Zetco Check Valves

Check valves are mechanical valves that permit gases or liquids to flow in only one direction, preventing flow from reversing down the line. They are classified as one-way directional valves. Fluid flow in the desired direction opens the valve while backflow forces the check valve to close. Most check valves contain a flat disc that is slightly larger in diameter than that of the port. Flow indicators on the side of the body indicate the direction of the flow for correct installation.

Zetco has the most comprehensive range of WaterMarked check valves in Australia, being the first to develop such a range. Swing and Spring check valves are still available in non-watermarked versions in the market even though the Plumbing code (AS3500) calls for a tested WaterMarked product even in non-potable water environments. Zetco only stocks WaterMarked Spring and Swing checks for the plumbing industry, giving you confidence that you can comply with relevant legislation.

WaterMarked versions of both spring loaded and swing check valves are available in both flanged and threaded versions. Spring loaded check valves are available with seals for specific applications such as diesel and are fitted with conical jumpers to reduce flow restrictions. Spring loaded and swing check valves are available in 316 stainless steel to be utilised in aggressive applications. Flanged swing check valves are drilled to customers specifications.

Swing and Spring checks are available in threaded and flanged ends in sizes 15mm through to 100mm. Metals include DZR brass, bronze and stainless steel and are available in 1-, 2- and 3-piece versions.

Market applications include hydraulics, mining, pumps, compressed air and natural gas.