Noreva GmbH products

Type ZB – The ZB is the standard valve for sizes 1” – 10”. Its optimum designed aerodynamic flow path through the valve results in very low pressure losses. It is also available with API 6D face-to-face dimensions (ZD). The axial design allows for a streamlined flow path around the disc and high pressure recovery, minimising pressure drop across the valve. This efficient design combined with the highly responsive nonslam operation make this valve ideal for high head, critical pump applications. Type ZB – The ZB is the standard valve for sizes 1” – 10”. Its optimum designed aerodynamic flow path through the valve results in very low pressure losses. It is also available with API 6D face-to-face dimensions (ZD). Materials according to customers request, such as Low Temperature Carbon Steel, Nickel-Aluminium-Bronze, Duplex, Superduplex, 6Mo, etc. are our speciality!

The NB is the Noreva standard long face to face for 12″ and larger, providing optimum pressure recovery performance and, hence minimum pressure loss.  It is also available with API 6D face-to-face dimensions (ND). Materials according to customers request, such as Low Temperature Carbon Steel, Nickel-Aluminium-Bronze, Duplex, Superduplex, 6Mo, etc.

Pressure recovery is further enhanced within the Type G valve. Whilst using the same Ring Disc format, the Type G valve has a wider, split body design facilitating even greater flow efficiency and throughput performance.

Combining the Best of Two Worlds (Single Spring & Ring Disk) Specifically for Gas Service. NZ is designed for the gas applications with very low flowrates; it combines the advantages of minimized friction due to zero bending moments on the disc, stable operation at partial open flow and best dynamic behavior due to shortest disc stroke of any axial check valve. Type NA is in accordance with API face-to-face dimensions. Materials according to customers request, such as Low Temperature Carbon Steel, Nickel-Aluminium-Bronze, Duplex, Superduplex, 6Mo, etc.

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. Materials according to customers request, such as Low Temperature Carbon Steel, Nickel-Aluminium-Bronze, Duplex, Superduplex, 6Mo, etc.