The Parallel Plate Sliding (PPS) Gate Valve is designed for main steam and feedwater isolation in BWR and PWR reactors. Using system medium for actuation, it eliminates the need for auxiliary systems. The valve features a block design with direct-mounted pilot valves, ensuring stable performance under steam, water, and transition conditions. Built from forged or cast carbon and stainless steel, it meets QME-1 and IEEE qualification standards. With minimal pressure loss and retracting discs preventing seat wear, the PPS Gate Valve delivers high efficiency, low maintenance, and superior sealing performance, making it an ideal choice for nuclear power plants.

Key features

Designed for nuclear applications

Operates under steam, water, and transitions

Pressure class up to 2500

Sizes up to 760mm (29.9”)

Forged/cast carbon or stainless steel

QME-1 and IEEE qualified

Direct-mounted pilot valves

No stuffing box for reduced leakage

Auxiliary medium operation if power is unavailable

High redundancy levels available