Upstream Pressure Support Valve - E3116-00 / E4116-00

Applications

• On branches of the main pipeline to reduce pressure in secondary lines.
• On the tank supply lines to regulate pressure and flow rate according to the values required for level control.
• In gravity pipes to ensure minimum pressure to users located in the highest areas, in case of high consumption in the lowest areas.

Accessories

• The position indicator with 4-20 mA output.
• The open-close indicator.
• Manometers.
• Self-cleaning high capacity filter.

Notes to the designer

• Inlet and outlet pressure, flow rate and application are required for cavitation sizing and analysis.
• Recommended flow rates and working conditions are given in the E3000 - E4000 valve catalogue.
• It is recommended to leave a straight section of pipe 3 nominal diameters long upstream of the valve. 

Optional configurations

• Upstream pressure sustaining valve with anti-reflux system.
• Sustaining valve with solenoid control valve.
• Sustaining valve with high sensitivity pilot.

Operating conditions

• Fluid: treated water.
• Minimum pressure: 0,7 bar.
• Maximum pressure: 25 bar. Higher on request.
• Maximum temperature: 70 °C.

Pilot support adjustment field

• Blue spring: 0.7 to 7 bar.
• Red spring: 1.5 to 15 bar.
• Higher values up to 25 bar on request
• Values lower than 0.7 bar available with high sensitivity pilots.

The valve is controlled by a high capacity two-way pilot (5) with adjustable calibration which, through the regulation unit (4), receives the upstream pressure value.

If the latter exceeds the calibration value, the pilot opens, discharging pressure from the control chamber (10) with consequent rise of the shutter (11) and flow through the seat (12) to protect the system.

When the upstream pressure drops below the set threshold, the pilot modulates the flow in the circuit, so the pressure in the valve chamber increases, bringing the shutter to the closed position, which stops the flow through the main valve.

The pressure at the inlet and outlet of the main chamber (10) is controlled by the unique regulation unit (4), equipped with a filter and three adjustable needle valves, necessary to ensure stability and make the opening and closing speeds of the valve independent of each other.

The recommended installation scheme of the E3116-00 / E4116-00 valve, used for pressure sustaining, includes shut-off devices (1, 2) and bypass to allow maintenance, and a filter (3), which retains any impurities.

The direct-acting sustaining valve DRV-S (4), reliable even after long periods of inactivity, represents the best solution for the bypass, usually not in operation.

The insertion of combined anti-water hammer vents FBA (5, 6) upstream and downstream is also recommended.