Pressure Reducing and Sustaining Valve with Check Feature
Model-AD-PRSVC
Overview
A Pressure Reducing and Sustaining Valve with Check Feature is a hydraulically operated, self-actuated control valve designed to reduce downstream pressure, sustain minimum upstream pressure, and prevent reverse flow in a single integrated unit.
This valve is ideal for pumping mains, transmission lines, and critical water networks where pressure control and backflow protection are essential.
Key Benefits
- ✓Three functions in one valve
- ✓Eliminates separate check valve
- ✓Fully automatic operation
- ✓No external power required
- ✓Compact and cost-effective
Working Principle
The valve operates automatically using pipeline pressure, without any external power source.
- ✓The pressure reducing function maintains a constant preset downstream pressure, regardless of inlet pressure fluctuations.
- ✓The pressure sustaining function ensures the upstream pressure does not fall below a minimum set value, protecting pumps and upstream infrastructure.
- ✓The check feature prevents reverse flow by closing the valve instantly when flow reversal occurs, safeguarding pumps, meters, and pipelines.
The valve continuously modulates to maintain stable pressure while ensuring unidirectional flow.
Key Functions
- ✓Reduces downstream pressure to a preset safe level
- ✓Sustains minimum upstream pressure
- ✓Prevents reverse flow and back pressure
- ✓Protects pumps and pipelines from damage
- ✓Maintains system stability under varying flow conditions
Main Components
- ✓Main Control Valve (Diaphragm or Piston Type)
- ✓Pressure Reducing Pilot Valve
- ✓Pressure Sustaining Pilot Valve
- ✓Integrated Check Assembly
- ✓Control Tubing and Accessories
- ✓Strainer for pilot protection
Applications
Pump Discharge Lines
Pump discharge lines
Transmission Mains
Water transmission mains
Municipal Systems
Municipal water supply systems
Irrigation Networks
Irrigation and agricultural networks
Industrial Pipelines
Industrial water pipelines
Booster Stations
Booster pumping stations
Advantages
- ✓Combines three functions in one valve
- ✓Eliminates the need for separate check valves
- ✓Fully automatic and energy-free operation
- ✓Reduces installation space and cost
- ✓Accurate and reliable pressure control
- ✓Long service life with low maintenance
Typical Specifications
Customizable to meet specific requirements
- ✓Size Range: DN 50 to DN 300 (and above on request)
- ✓Pressure Rating: PN 10 / PN 16 / PN 25
- ✓Body Material: Ductile Iron / Cast Steel
- ✓Coating: Fusion Bonded Epoxy (FBE)
- ✓End Connections: Flanged as per EN / ISO / ANSI
- ✓Operating Medium: Water
Why Choose Our Valve?
Our Pressure Reducing and Sustaining Valve with Check Feature offers a compact, efficient, and reliable solution for modern water systems. Designed to meet international standards, it ensures optimal pressure management, system protection, and long-term operational reliability.