Axial Check Valve

Having over 30 years of experience in the designing and manufacturing of NRV’s, Advance Valves has developed the NZ Series of axial or nozzle check valves deploying advanced 3-D design software including Computational Fluid Dynamics analysis as well as thorough testing of the valve prototypes.

These valves are widely used in different industry sectors including that of oil and gas such as top site offshore platforms, subsea, refineries, pipelines, LNG and petrochemical plants.

Advance Valves’ NZ-Series is an axially operated non-return valve with non-slam characteristics. This valve series incorporates an efficient design with high flow rates and a low pressure-drop, thereby ensuring a high degree of reliability in operations. With these characteristics these valves can safely be used for critical process applications involving process pumps and compressors where equipment safety largely depends on efficient nonreturn valve performance.

The axial check valves are mostly installed downstream of rotating equipment to protect the expensive mechanical equipment from possible damages due to backflow. Although they are usually more expensive to other types of check valves, these valves provide safe protection of costly rotating equipment.

Many natural gas companies and other power industries are now placing their pipelines below ground and are looking for a one-piece valve they can weld in and bury. The NZ Series Check Valve answers that demand with a precision nozzle-style valve that uses axial-flow technology to eliminate turbulence and prevent erosion and vibration. This design reduces downtime and maintenance costs and boosts capacity and accuracy.

Additionally, the NZ Series Check Valve provides a critical service to the power industry due to the valve’s enhanced leak proofing under high pressure thereby virtually eliminating acid and chemical leakage.

Key Features of Advance Valves’ Axial / Nozzle Check Valves

• Designed as per ANSI B16.34.
• Non-slam, axially operated.
• Self-operated, no external force required.
• High flow coefficient, low pressure drop.
• Quick response to change in flow direction.
• Metal seated, efficient tight shut-off sealing.
• Double Flange Body design as standard, other end connections available.
• Zero emission.
• Maintenance-free.