NETAFIM™ PLASTICVALVE SERIES

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FEATURES & BENEFITS

Reliable trouble free valve operation; controlled, smooth and accurate closing and opening at low flows with drip-tight sealing.

Extremely stable and accurate control during shut-off and regulation; provides versatile rangeability and low flow control.

High flow capacity and very low head loss resulting from the innovatively designed body and flow path.

Positive drip-tight sealing is guaranteed by the oval diaphragm’s design and its resilient sealing surface.

Easy inline maintenance is provided by top entry design.

Rugged, high quality construction meets applicable engineering standards.

Proven pressure, flow and level regulation pilots, electric solenoids and control accessories.

Design based on simplicity. Engineered to perform under the most demanding conditions. Each valve assures a controlled close, which minimizes water hammer and absorbs the pressure shock caused by system shut-off.

The flow path is wide and clear of obstructions for superior hydraulic performance and lower pressure loss.

Netafim valves are capable of reducing pressures at extremely low flow rates, as well as high flow rates, due to the multi-functional oval diaphragm. The same diaphragm can open, close, and reduce pressures down to 0.4 Bar.

Netafim valves require minimal maintenance. The valve never needs to be removed from the line. The bonnet is easily removed revealing the diaphragm and spring that may require upkeep.

Netafim offers a complete line of multi-purpose pilots and accessories. By combining Netafim valves with precise hydraulic accessories, solutions to both common and more complex valve requirements are readily attained. The plastic pilot in particular, has new innovative features not available in similar type products; such as larger passages for quick reaction time and non-breakable directional assembly.

Netafim plastic valve series is produced of high quality materials - suitable for working conditions up to 10 Bar.

Plastic valve Series is applicable for a broad range of flow and pressure control. The series is offered in a wide selection of connections – threaded, flanged, grooved and solvent welding.

CONSISTENT PERFORMANCE

DEPENDABLE CONTROL

PRESSURE REDUCTION OVER A WIDE FLOW RANGE

EASY MAINTENANCE

HIGH EFFICIENCY - LOW HEAD LOSS

HYDRAULIC ACCESSORIES

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MAIN PLASTIC VALVES APPLICATIONS

Opens and closes manually by a 3 way selector.

Valve opens or closes in response to an electric command using a 3 way solenoid.

Available models: 3 way normally closed, 3 way normally opened.

Maintains a constant downstream pressure regardless of upstream pressure or flow rate fluctuations. The set point of reduced pressure is adjustable by a 2-way or 3-way pilot valve. A spring-loaded diaphragm inside the pilot moves according to the downstream pressure changes.

The pressure fluctuations are compensated by gradual opening and closing of the valve.

Maintains a constant downstream pressure regardless of upstream pressure or flow rate fluctuations. The set point of reduced pressure is adjustable by a 2-way or 3-way pilot valve. A spring-loaded diaphragm inside the pilot moves according to the downstream pressure changes.

The pressure fluctuations are compensated by gradual opening and closing of the valve. The added Solenoid enables the shut-off and opening of the valve by an electric signal from the controller.

Maintains a constant downstream pressure regardless of upstream pressure or flow rate fluctuations. The set point of reduced pressure is adjustable by a 2-way or 3-way pilot valve. A spring-loaded diaphragm inside the pilot moves according to the downstream pressure changes.

The pressure fluctuations are compensated by gradual opening and closing of the valve. The added hydraulic relay enables the opening and shut-off by hydraulic remote command.

MANUAL

ELECTRIC CONTROL VALVE

PRESSURE REDUCING

PRESSURE REDUCING WITH ELECTRIC CONTROL

PRESSURE REDUCING WITH HYDRAULIC REMOTE CONTROL

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MAIN PLASTIC VALVES APPLICATIONS

Maintains the minimum preset upstream pressure regardless of changes of pressure in the upstream or flow rate.

The solenoid enables electric control to open and close the valve by an electric signal from the controller.

The combined operation of the two pilots sustains a constant pressure upstream of the valve, and at the same time, reduces the downstream to a preset pressure. Both pilots have spring-loaded diaphragms. One pilot is sensitive to upstream pressure and the other to downstream pressure. The valve opens or closes gradually to maintain both required pressures simultaneously.

The flow rate through the valve is determined indirectly using an orifice plate. Normally the valve is partially open to allow a preset constant flow rate. The pressure loss across the orifice is proportional to the actual flow rate. Upon increasing pressure loss, the valve is automatically piloted to close. When the pressure drops, the valve opens and the flow rate is maintained in spite of the line pressure fluctuations or the downstream demand.

Used to maintain a preset water level in a reservoir or water tank. The line pressure activates the valve. The valve stays open as long as the water level in the reservoir is below a preset level. As the water level rises and floats the pilot’s arm, the valve gradually closes.

The valve is a normally closed electric float control valve. A float hanging over the water surface at the desired height activates the electric circuit. When the water level drops below the float, the electric circuit is switched on and opens the valve through a solenoid valve. As the rising water reaches the float level, the circuit is disconnected and the valve closes.

PRESSURE REDUCING WITH ELECTRIC CONTROL

PRESSURE REDUCING/SUSTAINING

FLOW RATE CONTROL VALVE

FLOAT LEVEL CONTROL VALVE

ELECTRIC FLOAT CONTROL VALVE

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MAIN PLASTIC VALVES APPLICATIONS

Maintains a constant downstream pressure regardless of upstream pressure or flow rate fluctuations. The set point of reduced pressure is adjustable by a 2-way or 3-way pilot valve. A spring-loaded diaphragm inside the pilot moves according to the downstream pressure changes.

The pressure fluctuations are compensated by the gradual opening and closing of the valve.

The added 2 stage opening control enables the prevention of rising pressure above the set point by filling the line gradually.

Maintains the minimum preset upstream pressure regardless of changes of pressure in the downstream or flow rate. The pressure relief function releases excess flow in order to maintain the set point pressure.

Valve opens or closes in response to an electric command using a 2 way solenoid. End connections are solvent welded unions.

Valve opens or closes in response to an electric command using a 2 way solenoid. The throttle offers a mechanical flow rate control.

PRESSURE REDUCING AND 2 STAGE OPENING

PRESSURE SUSTAINING RELIEF

ELECTRIC CONTROL VALVE WITH SOLVENT WELDED UNIONS

ELECTRIC CONTROL VALVE, 2 WAY SOLENOID WITH THROTTLE

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FLOW CHART

VALVE SPECIFICATIONSBODY Reinforced Nylon

BONNET Same as above

DIAPHRAGM Natural Rubber

SPRING Stainless Steel

SEAT Acetal

BOLTS Steel Cobalt Coated

SIZE LENGTH (L) HEIGHT (H) WIDTH (W) WEIGHT

INCH MM MATERIAL CONNECTIONS MM MM MM KG

2"S 50

Reinforced Nylon

Threaded 237 114 157 1.29

2.5" 63 Threaded 259 121 157 1.38

2.5" 63 Adaptor PVC 330 121 157 1.82

3" 80 Threaded 277 130 157 1.50

3" 80 Flanged 283 198 198 2.54

3" 80 Grooved 257 121 157 1.34

3"S 80 Threaded 310 168 236 3.68

3"S 80 Grooved 310 153 236 3.25

3"S 80 Flanged 310 200 236 4.50

4" 100 Threaded 350 181 236 4.04

4" 100 Grooved 350 165 236 3.52

4" 100 Flanged 350 228 236 5.08

6" 150 Flanged 424 339 285 14.50

6" 150 SW 494 339 281 14.80

8" 200 Flanged 502 339 340 16.80

VALVE DIMENSIONS

NOMINAL DIAMETER INLET PRESSURE, PSI & BAR FLOWRATE FULLY OPENED VALVEMINIMUM MAXIMUM MINIMUM MAXIMUM

INCH MM PSI BAR PSI BAR M3/H M3/H *KV FACTOR

2"S 50

6 0.4 145 10 0.5

40 89

2.5" 63 65 89

3" 80 75 89

3"S 80 105 260

4" 100 165 270

6" 150 355 780

8" 200 380 830

RECOMMENDED WORKING CONDITIONS

Kv=Q/√ΔP Where Q=Flow Rate (M3/h), ΔP=Head loss across the valve (BAR).

TECHNICAL SPECIFICATIONS

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WATER WORKS & IRRIGATION SOLUTIONS

GROW MORE WITH LESS

213-217 FITZGERALD ROAD | LAVERTON VIC 3026T 03 8331 6500 | F 03 9636 3865 | E netinfo@netafim.com.au

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