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The Valtek Mark Four Tek-Check, non-slamming piston check valve, provides rugged performance and reliable service in corrosive and non-corrosive, gas and liquid applications. The smooth, nearly-constant area internal passages allow for high capacity flow with minimum turbulence. When the flow ceases or is reversed, the piston closes slowly, preventing pressure surges. The non-slam design is also effective in dampening pulsating flow. -
Noreva's NA is specially designed for gas applications having a centrally guided, single spring with very low fully open velocity. The design is focused on laying the centre of gravity of the only moving part, the disc, over the centre of the surface it is sliding on. Due to this design change, the NA is able to use softer springs, which function at very low flow rates, mainly because the tilting effect of the moving component is eliminated all together. It provides the same internal flow profiles and consequentally, the same pressure loss. -
The unique ring disc design ensures that the disc remains light and responsive even in large sizes, which is essential for rapid non-slam closure. Mounted on a multiple spring and radial guide assembly, the disc moves freely without the frictional forces. Combining two ring-shaped annular flow paths with the excellent pressure recovery properties provided by the diffuser, the minimal pressure drop across the Type N valves gives lifetime energy savings when compared to more conventional check valve designs. It is also available with the API 6D face-to-face dimensions (Series ND) -
Noreva's NC is a lower cost solution which combines the advantages of the NZ with a shorter face-to-face length and reduced weight, where marginally higher pressure drops are acceptable. The NC is specially designed for gas applications having a centrally guided, single spring with very low fully open velocity. The design is focused on laying the centre of gravity of the only moving part, the disc, over the centre of the surface it is sliding on. Due to this design change, the NC is able to use softer springs, which function at very low flow rates, mainly because the tilting effect of the moving component is eliminated all together. -
The unique ring disc design ensures that the disc remains light and responsive even in large sizes, which is essential for rapid non-slam closure. Mounted on a multiple spring and radial guide assembly, the disc moves freely without the frictional forces. Combining two ring-shaped annular flow paths with the excellent pressure recovery properties provided by the diffuser, the minimal pressure drop across the Type N valves gives lifetime energy savings when compared to more conventional check valve designs. -
The unique ring disc design ensures that the disc remains light and responsive even in large sizes, which is essential for rapid non-slam closure. Mounted on a multiple spring and radial guide assembly, the disc moves freely without the frictional forces. Combining two ring-shaped annular flow paths with the excellent pressure recovery properties provided by the diffuser, the minimal pressure drop across the Type N valves gives lifetime energy savings when compared to more conventional check valve designs. Pressure recovery is further enhanced within the NG series due to a wider split-body design to facilitate greater flow efficiency and throughput performance. -
The NK type, with its reduced body length and its consequent reduced weight, offesr significant cost savings compared with the long pattern NB and ND types. The unique ring disc design ensures that the disc remains light and responsive even in large sizes, which is essential for rapid non-slam closure. Mounted on a multiple spring and radial guide assembly, the disc moves freely without the frictional forces. Combining two ring-shaped annular flow paths with the excellent pressure recovery properties provided by the diffuser, the minimal pressure drop across the Type N valves gives lifetime energy savings when compared to more conventional check valve designs. -
Noreva's NZ is specially designed for gas applications having a centrally guided, single spring with very low fully open velocity. The design is focused on laying the centre of gravity of the only moving part, the disc, over the centre of the surface it is sliding on. Due to this design change, the NZ is able to use softer springs, which function at very low flow rates, mainly because the tilting effect of the moving component is eliminated all together. It provides the same internal flow profiles and consequentally, the same pressure loss. -
The axial design allows for a streamlined flow path around the disc and high pressure recovery, minimising pressure drop across the valve. The efficient design combined with the highly responsive non-slam operation make this valve ideal for high head, critical pump applications. Its optimum designed aerodynamic flow path through the valve results in very low pressure losses. It is also available with the API 6D face-to-face dimensions (Series ZD) -
The axial design allows for a streamlined flow path around the disc and high pressure recovery, minimising pressure drop across the valve. The efficient design combined with the highly responsive non-slam operation make this valve ideal for high head, critical pump applications. Its optimum designed aerodynamic flow path through the valve results in very low pressure losses. -
Designed specifically for potable water applications. The axial design allows for a streamlined flow path around the disc and high pressure recovery, minimising pressure drop across the valve. The efficient design combined with the highly responsive non-slam operation make this valve ideal for high head, critical pump applications. Its optimum designed aerodynamic flow path through the valve results in very low pressure losses.
Head Office
400 – 736 6th Avenue SW
Calgary, AB T2P 3T7
Canada
Phone: 1 (855) 465-8985
Email: [email protected]
Head Office
400 – 736 6th Avenue SW
Calgary, AB T2P 3T7
Canada
Phone: 1 (855) 465-8985
Email: [email protected]
Head Office
© 2019 • N2X Process Solutions Inc.
