Product Features
● Automatic Level Control: Opens and closes automatically according to the liquid level detected by the remote float pilot.
● Remote Float Pilot: The float pilot can be installed at the required level inside the tank or reservoir and connected to the main valve through control tubing.
● Hydraulic Operation: Uses pipeline pressure to operate the main valve without an electric actuator under normal configurations.
● Gradual Closing Action: The pilot-controlled closing process helps reduce sudden flow changes when the preset high water level is reached.
● Diaphragm-Controlled Main Valve: The diaphragm chamber provides stable hydraulic control under suitable inlet-pressure and flow conditions.
● Adjustable Water Level: The controlled high-water level can be set through the installation position of the float pilot.
● Flanged Connection: Suitable for installation in water-supply pipelines with matching flange standards.
● Serviceable Control System: Pilot valves, control tubing and strainers can be inspected and serviced according to the maintenance procedure.
Advantages
● Automatic water replenishment and level maintenance
● Helps prevent tank or reservoir overflow
● No routine manual opening and closing required
● No external electric power required for standard hydraulic operation
● Main valve can be installed outside the tank for convenient inspection and maintenance
● Suitable for centralized water supply and storage systems
● Stable control through a remote float pilot and hydraulic main valve
● Multiple pressure ratings and flange standards available for different projects
Size Range
● NPS 2″–24″
● DN50–DN600
Other sizes can be discussed with the factory according to the project requirements and approved product configuration.
Pressure Rating
● PN10 / PN16 / PN25
The valve must be selected according to the available inlet pressure, operating pressure, required flow rate, tank level and pipeline conditions. Sufficient hydraulic pressure is required for stable pilot operation.
Standards
International Standards
● Water-Supply Control Valve Requirements: EN 1074-5
● Pilot-Operated Control Valve Standard: ANSI/AWWA C530-22, when specified
● Inspection and Pressure Testing: EN 12266-1
● Flange Connection: EN 1092-2; other flange standards are available according to the ordered configuration
Chinese Standards
● Design and Manufacture: CJ/T 219-2017 — Hydraulic Control Valves
● Inspection and Pressure Testing: GB/T 13927-2022 — Industrial Valves, Pressure Testing
● Flange Connection: GB/T 17241.1-2024 — Cast Iron Pipe Flanges, Part 1: PN Series
International and Chinese standards represent alternative project requirements and are not automatically applied simultaneously. The applicable product, flange and testing standards shall be specified in the purchase order. Special technical requirements can be discussed with the factory.
Industry Applications
● Municipal water-supply systems
● Water tanks and storage reservoirs
● Building water-supply systems
● Pumping stations
● Water treatment facilities
● Industrial clean-water systems
● Irrigation storage systems
● Fire-water storage systems, subject to project and approval requirements
The standard configuration is intended primarily for clean water. Suitability for seawater, wastewater, chemical media, high temperatures or water containing significant suspended solids must be confirmed separately according to the materials and control-system configuration.
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