Step by step control ACV with electric remote control - E3113-40 / E4113-40

Applications

• In combination with controllers, to manage pressure according to flow rate variations order to reduce losses.
• For constant or variable level control on tank supply pipes.
• At the outlet of tanks to regulate the flow according to consumption.
• In systems used for heating and cooling to regulate the flow according temperature variations.

Accessories

• Position indicator.
• The open-close beacon.
• Manometers.
• Self-cleaning high-capacity filter.
• Manual opening limiter.

Notes for the designer

• Modulation systems accurate regulation even with low flow rates and high-pressure differentials.
• Recommended flow rates and operating conditions can be found in the E3000/E4000 valve catalogue.
• The duration of the pulses sent to the solenoid changes depending on the size of the valve and the operating conditions.

Optional configurations

• Remote-controlled valve with step-by-step regulation and anti-backflow system.
• Remote controlled valve with step-by-step control and solenoid for remote emergency opening.
• Remote-controlled valve with step-by-step regulation and quick-action overflow pilot.

Operating conditions

• Fluid: treated water.
• Minimum pressure: 1,5 bar.
• Maximum pressure: 16 bar. Higher on request.
• Maximum temperature: 70 °C.

Solenoid valve data

• Voltage: 24 V DC, 24 V/50 Hz, 230 V/50 Hz. Other voltage on request.
• Consumption electrical: inrush AC (VA) 24, hold AC (VA) 17 (8 W), DC hot/ cold coil 8/9 W.

The valve includes two normally open solenoids (15 and 16), which act on two flow accelerators (13 and 14).

When the upstream solenoid (15) is energized, the throttle 13 allows a flow to the valve chamber (10) proportional to the number and duration of pulses received; the passage between the plug (11) and seat (12) is reduced in this case.

The use of the downstream solenoid (16), on the other hand, allows a flow which reduces the pressure in the chamber (10), resulting in a gradual opening of the main valve. The flow in the circuit is in any case controlled by the two needle valves (6 and 7).

The manual control (4, 5) is always provided, unless otherwise requested, to regulate the valve when the solenoids are not in operation due to power failure. A filter (17), installed upstream, also protects the solenoid and other circuit components from contact with impurities and debris.

In the following picture, the valve is connected to a flow meter (5).

A control unit (8) constantly pulses the solenoids to maintain a constant flow regardless of upstream pressure fluctuations, or to regulate the downstream pressure according to changes in flow rate while minimising pressure losses.

Shut-off devices (1, 2) and bypasses are required for maintenance, a filter (3) and combined FBA water hammer vents (6, 7) upstream and downstream.