The 700X series pump control valve is an intelligent multi-functional control device installed on the discharge piping of pumps in high-rise building water supply systems and other municipal water networks. It is designed to prevent medium backflow, water hammer, and hydraulic shock. Integrating the functions of a gate valve, a check valve, and a water hammer arrestor into a single unit, it ensures safe system operation through hydraulic automatic control logic. The core operating principle utilizes the pilot piping and pilot valve system to automatically adjust the opening and closing speeds of the main disc based on fluctuations in pump pressure. During pump startup, the valve opens slowly to reduce starting current and initial surge; during shutdown, it closes quickly to cut off the majority of return flow and then slowly to eliminate remaining pressure impacts. The 700X series significantly enhances water system reliability while simplifying piping configurations.

Product Image of 700X Pump Control Valve

1.Multi-functional integration:Combines isolation, non-return, and energy dissipation functions. It effectively replaces the traditional combination of gate valve, check valve, and water hammer arrestor, saving installation space and reducing fittings.
2.Full hydraulic self-control:Driven directly by pipeline media pressure without the need for external electricity or air. This self-operated mode is sensitive with a low failure rate, ensuring intrinsic safety.
3.Precise adjustable speeds:Through external needle valves, users can independently adjust the opening speed and slow-closing time based on actual piping length and pump characteristics for scientific surge management.
4.Low flow resistance:The full-bore streamlined body design with smooth internal cavities ensures a very low resistance coefficient, significantly reducing head loss and energy consumption during high-flow operation.
5.Durable diaphragm or piston structure:Utilizes reinforced fiber rubber diaphragms or precision pistons. With fewer moving parts and low mechanical wear, it effectively absorbs system pressure pulsations for a long service life.
6.Bubble-tight shut-off:Precision-ground sealing surfaces paired with high-performance resilient seals ensure zero leakage during full closure or backflow, preventing water loss and energy waste.
7.Robust material adaptability:Available in ductile iron or stainless steel with internal and external epoxy coating. Excellent corrosion resistance makes it suitable for tap water, fire protection, and industrial circulating water.
8.Convenient online maintenance:The top-entry design allows for rapid inspection and replacement of internals without removing the valve body from the pipeline. Independent filters in the pilot lines reduce impurity impact on the control loop.

Structural Drawing of 700X Pump Control Valve

List of Component Names and Materials

Performance Specification Sheet

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard

Outline dimension table（Unit：mm）