VAG Non-Return Valves

Non-return valves are indispensable in various media and applications in order to ensure the safe operation of systems. They prevent the return flow of liquids, thus protecting pumps from damage, and optimise the efficiency of the system. Whether in cooling circuits, water distribution networks or industrial processes – the use of suitable, streamlined and reliable valves is decisive for the safety and durability of the entire system equipment. It is the only way to keep a system in flux.

Our highlight: VAG SKR Slanted-Seat Tilting-Disk Check Valve

Over the years, our highly efficient and flow-optimised metallic sealing VAG SKR Slanted-Seat Tilting-Disk Check Valve has proven to be extremely reliable a thousand times over in the most diverse applications. Its sophisticated and robust construction with slanted seat allows its long-term maintenance-free operation and it reliably protects your pumps as well as the entire system from dangerous pressure surges. It already works stably at a minimum flow velocity as low as 1.5 m/s and has a shorter closing time thanks to its slanted seat design.

What makes this valve so special?

• PN: 10/16/25 - DN: 200...1400
• Metallic sealing non-return valve with flange connection on both sides
• Medium: Water, wastewater, sea water
• Compact over-all dimensions
• Stable opening at a flow velocity as low as 1.5 m/s and reduced closing time due to approx. 30% shorter stroke ensured by the slanted seat design
• Corrosion- and wear-resistant sealing seat
• No moving parts outside the valve
• Reduced pressure losses due to flow-optimised tilting disk
• Versions with and without damper available

Short closing time: No dangerous pressure surge

Due to its special design and the shortened stroke of the disc from 60° to 90°, the VAG SKR closes reliably shortly before the reversal of the flow and thus prevents dangerous pressure surges.

Flow optimisation: Special shape of the disc

Thanks to its triple-offset tilting disc, which due to its hydrodynamic shape literally flies in the flow and stably rests on the body already at flow velocities as low as 1.5 m/s, our VAG SKR has a low flow resistance and thus a high energy efficiency. This is the so-called “wing effect” similar to that of an aircraft wing. In addition, there is no noise and there are no turbulences caused by slamming, which also contributes to a long service life and reliable operation.

More about this: Why is it important to maintain the minimum flow velocity in non-return valves?

Ideal protection of a system – durable and efficient

All of this makes the VAG SKR Slated-Seat Tilting-Disk Check Valve a valve with a flow-optimised design – similar to the aerodynamic design of an aircraft wing – that guarantees efficiency, a long service life and reliably protects pumps and systems.

VAG SKR Slanted-Seat Tilting-Disk Check Valve

• VAG-RETO-STOP Non-Return Valve
• VAG LIMU-STOP® Non-Return Valve (with lever and weight or with internal shaft)
• VAG TOP-STOP® Diaphragm Non-Return Valve (more about it and its advantages in residential estates
• VAG KRV Ball Check Valve
• VAG ZETKA Non-Return Valve
• and many other varieties