Vortex‑Free Multi‑Function Pump Control Valve SK/QK/YK Series Flange Hydraulic Check Valve for Water Supply Pump Station

Technical Parameters

1.Flanged connection shall comply with the standards GB/T 17241.1-2024.

2.Strength and sealing tests shall comply with the standard GB/T 13927-2022.

3.Relevant technical parameters are listed in Table 1, materials of main components in

Table 2, overall dimensions in Table 3.

1.Start pump with valve closed: Start the pump at zero flow first, then open the valve.This reduces the starting shaft power by an average of 50%, ensuring equipmentsafety.

2.Stop pump with valve closed: Close the valve first, then stop the pump when thepipeline flow velocity reaches zero. This  eliminates water hammer during shutdownand prevents pump reverse rotation.

3.In case of unplanned power failure: In the event of an unplanned power failure andsubsequent pump shutdown caused by lightning induction or circuit fault, the controlvalve automatically closes slowly to stop the pump. This ensures the water hammerpressure is not more than 0.3 times the working pressure, safeguarding the safety ofthe pipe network.

4.Energy saving: No vortex is generated inside the valve body, achieving an energysaving of approximately 25% compared with similar products.

5.Full-bore flow channel design: The design ensures the designed flow rate underworking conditions, thus realizing energysaving.

Main Features

• Vortex‑free streamlined full‑bore flow channel, low pressure loss, energy‑saving performance

• Integrated multi‑function design: slow‑open on pump start, slow‑close check on pump stop

• Effectively eliminate opening‑pump & stop‑pump water‑hammer, prevent pump reverse rotation

• Hydraulic pilot‑driven, no external power supply, fully automatic operation

• Ductile iron body with epoxy coating, anti‑corrosion for water medium

• Flange connection, compact structure, easy installation and field adjustment

• Replace combination of separate check valve, butterfly valve and water‑hammer eliminator, save project cost

Application

• Water pump outlet of water supply pumping station

• Municipal water supply pipeline projects

• High‑rise building water‑supply systems

• Industrial circulating water pipelines

• Water plant and sewage treatment stations

• Fire‑fighting water supply pump outlet

Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Shot Blasting & Coating

Valve surfaces are professionally shot blasted to remove rust, scale and impurities. Protective coatings are then applied according to customer requirements, providing excellent corrosion resistance and a durable surface finish.

Pressure Testing

Every valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.