RAYS has recently delivered a batch of extra-large slab gate valves to overseas clients. These valves incorporate a parallel single gate and floating seat design, enabling bidirectional operation. They are designed to ensure reliable sealing, flexible operation, and ease of use in opening and closing.
The gate valves support nominal diameters up to DN1200 and include specially designed flow holes to optimize fluid dynamic characteristics. When fully opened, the pipeline’s alignment with the gate’s flow holes mimics a straight pipe, thus minimizing flow resistance. This design significantly reduces overall pressure loss within the system, decreases energy consumption, and enhances system efficiency and performance.
The slab gate valves feature a precision-closing mechanism where the gate vertically moves through a precise guide system. This mechanism drastically reduces the friction coefficient and wear during operation. The sealing surfaces of the seats offer options between dual soft seals or a combination of soft and hard seals, facilitating a dual-seal effect on each seat surface. The floating seat design enables the inlet side seat to move toward the gate under medium pressure when the valve is closed, creating a substantial sealing pressure ratio and establishing the primary seal. Concurrently, the gate presses against the outlet side seat to form a robust double seal. The valve’s stem uses composite packing for enhanced sealing, ensuring reliability and minimal friction. The innovative double-seal structure also facilitates the replacement of wearable parts without impacting the pipeline operation, distinguishing our products from similar offerings domestically and internationally.
Courtesy of RAYS.