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Air & Vacuum Air Valve AV10

Description

The AV-010 Air & Vacuum Valve discharges air at high flow rates during the filling of the system and admits air at high flow rates during drainage , pump shut-off or at water column separation.

Applications

Agricultural and landscape irrigation laterals.

Operation

The air & vacuum valve discharges air at high flow rates during the filling of the system and admits air at high flow rates during drainage, pump shut-off or at water column separation.

High velocity air will not blow the float shut. Water entry will lift the float which seals the valve.

The smooth discharge of air reduces pressure surges and other destructive phenomena.

At any time during system operation, should internal pressure of the system fall below atmospheric pressure, air will enter the system.

The intake of air in response to negative pressure protects the system from destructive vacuum conditions and prevents damage caused

by water column separation. Air entry is essential to efficiently drain the system.

As the system starts to fill, the valve functions according to the following stages:

  1. Entrapped air is released by the valve.
  2. Water enters the valve, lifting the float and sealing the valve.

When internal pressure falls below atmospheric pressure (negative pressure):

The float will immediately drop down, opening the air & vacuum orifice.

Air will enter the system.

Agriculture

Main Features

  • Working pressure range: 0.2 – 10 bar
  • Testing pressure: 16 bar
  • Working Temperature : 600 C
  • Maximum intermittent temperature : 900 C
  • The body is made of high strength composite materials, and all operating parts are made of specially selected corrosion-resistant materials.
  • Drip-tight sealing at low pressure.
  • All parts are UV protected.
  • Lightweight, small dimensions, simple and reliable structure.

Valve Selection

  • Available in 3/4” (20mm), 2” (50mm)
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NDJ 5035 SD

Plastic impact sprinkler 3/4” male

APPLICATIONS:

general field use with solid-set irrigation systems

STRUCTURE AND FEATURES:

  • Unique hammer combined with SD (super diffuser) plate – designed for uniform distribution with single or dual
  • nozzles
  • High water distribution with spacing up to 20m
  • Higher resistance to wind
  • Color-coded bayonet nozzle for easy service
  • Integrated stream-straightening vane for maximum range
  • High-impact, heavy-duty plastic materials provide resistance to corrosion, chemicals and UV radiation
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Super Green spin

Super Greenspin, improvements and fixes.


• Provide a solution to the problem of wear of the material, linked to
poor water quality and a lack of overlap between sprinklers.
• New design of the axis of rotation reduces radial force when rotating
the sprinkler and improves centering with the body even after many
hours of operation.
• Closed body to avoid sand and impurities.


• Nozzles with protective ring against sand and dirt.
• Correct operation in extreme conditions.
• Identical flow rates as previous versions.
• Same performance as the previous version

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ADIR TDS Semi-Automatic Disc Filters

Innovative and patented automatic disc filters. User can flush the discs without dismantling the filter.


Flushing is performed with filtered water.
Flushing is performed simply by turning the handle 1/4 of a turn.


Small foot print.
Two models are offered:1 action and 2 action – user needs to open a drain valve.
Available sizes:2″,3″
Filter is equipped with pressure indicator that enables the user to see if filter needs cleaning.

ADIR TDS Semi-Automatic Disc Filters -Available sizes: 2″ 3″

Two models are offered: 1 action – user needs to turn the handle 1/4 of a turn.2 action – user needs to open the drain valve and turn the handle 1/4 of a turn.

Large filtration area: 1,025 cm^2.Discs are flushed with filtered water due to the inner filter.

Max. working pressure: 10  bar.

Min. flushing pressure: 2 bar.

 For more information please refer to the attached PDF

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Yamit Hydraulic Auto Screen Filter Series 200

AF-200 Automatic Hydraulic Suction Scanner Filters

ApplicationsCompact low flow screen filters with automatic suction scanner  back flushing for standard industrial and municipal applications. Very popular in the irrigation sector.

Standard Characteristics:

  • Filter element: – Stainless Steel screen AISI 316, supported by a PVC cylinder.
  • Available filtration grades: 80 – 3000 microns
  • Filter housing material of construction: Carbon Steel ST37.2
  • Pre-treatment: sand blasting up to Sa 2.5 grade
  • Exterior & Interior coating: electrostatic oven baked polyester-epoxy powder coating with a thickness of 150-200 micron
  • Connections: Victaulic, Threaded socket and Flange
  • Maximum recommended working pressure: up to 10 bar (145 psi).
  • Minimum operating working pressure during flushing: 2 bar (28.4 psi)
  • Equipped with an electronic control system (6V DC, 12 V DC, 24V AC)

Operation:

Cleaning of the screen is performed automatically once the pressure loss (ΔP) across the filter has reached the preset value up to 0.5 bar (7psi). The flushing valve opens, pressure is released from the hydraulic piston, and debris-laden water is discharged through the flushing valve. Pressure in the hydraulic motor chamber and the dirt collector is significantly lowered causing the dirt collector nozzles move along and rotate cleanings the whole internal screen surface. The flushing cycle takes 5 seconds. The flushing valve closes at the end of the cycle, pressure reapplied to the piston, moving the nozzles back to their rest position, and the filter is cleaned. During the whole process water supply is uninterrupted.

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NDJ CLICK TIF HD

Heavy Duty Pressure-Compensating (PC) & Compensating Non-Leakage (CNL) online Button Dripper

APPLICATIONS

  • Greenhouses, nurseries. orchards, Vineyards, landscapes and garden plots
  • Pulse irrigation and irrigation in soilless conditions
  • Prevents surplus drainage in low places (CNL model)

STRUCTURE AND FEATURES

  • Heavy Duty range of drippers and accessories in various configurations
  • Four dripper design elements minimize clogging:
  1. Protected water inlet
  2. Flushing mechanism of regulating diaphragm
  3. Strong turbulent flow in labyrinth enables continual cleaning and flushing
  4. Large water passages
  • Colour-coded for identification of discharge and model
  • Standard 5 mm tapered outlet for working with connectors or barb outlet for 3/5 tube
  • Chemical-resistant, high-grade plastic for precision and durability
  • Two models available: PC and CNL (Compensating Non-Leakage)
  • Unique “sharp edge” CNL design prevents dirt accumulation and ensures reliable operation under  difficult conditions
  • 6 different flow rates
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NDJ TOP DRIP

Innovative, cost effective, heavy duty pressure-compensating (PC) and antisyphon (PC AS) thick-walled dripline models based on the cascade labyrinth 

APPLICATIONS

  • Row crops and vegetables
  • For orchards and other multi-seasonal applications
  • Subsurface drip irrigation (SDI)
  • Variable topography
  • Irrigation of long rows with high uniformity

STRUCTURE AND FEATURES

  • Accurate pressure-compensating dripper
  • Low CV: 3.0%
  • Cascade labyrinth incorporated for maximal clog resistance
  • Protection from root intrusion
  • Unique double self-cleaning mechanism
  • Large water passages for optimal durability at low flow rates
  • Multiple channel water inlet for operation under heavy dirt load
  • Close dripper spacing creates a continuous wetted strip

TECHNICAL DATA

  • Flow rate: 0.6, 1.0, 1.6, 2.0, 2.2, 3.5 l/h
  • Pressure regulating range: 0.4-4.0 bar
  • Operating pressure: 0.4-4.0 bar, according to wall thickness
  • Wall thickness: 0.9-1.2 mm
  • Recommended filtration: 130 microns (120 mesh)
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NDJ AMNONDRIP

AmnonDrip PC, CNL & PC AS THICK-WALLED PC FLAT DRIPLINE

Innovative, pressure-compensating (PC), dripline with special anti-syphon (AS) and compensating non- leakage (CNL) models. Cascade labyrinth feature incorporated in all drippers

APPLICATIONS

  • Ideal solution for irrigation in topographically challenging terrain, and where long laterals are required
  • CNL option for pulse irrigation of orchards, open field crops and greenhouses
  • Subsurface Drip Irrigation (SDI), for accurate irrigation of orchards, open field crops and greenhouses

STRUCTURE AND FEATURES

  • Pressure- compensating (PC) enabling water application accuracy at variable topography and the installation of long laterals
  • Efficient self-cleaning turbulence provided by the Cascade labyrinth
  • Hydrodynamic dripper design ensures continuous flushing of sediments and small dirt particles
  • Low CV for maximal uniformity
  • Weir structure improves root intrusion resistance and sand suction
  • 3D water inlet structure improves clog resistance
  • High-quality silicon diaphragm
  • Both carton and coil package options are available (see packing and shipping table)
  • Coloured cap facilitates easy identification of dripper models

SPECIAL MODELS

  • CNL: Pressure-compensating non-leakage design reduces lateral filling time and facilitates pulse irrigation
  • PC AS: Pressure compensating anti-syphon design prevents suction at draining stage. Suitable for subsurface drip irrigation

TECHNICAL DATA

  • Flow rates: 0.5, 1.1, 1.6, 2.0, 2.2, 3.8 l/h
  • CNL: Opening pressure – 1 bar Closing pressure – 0.2 bar
  • AS: Opening pressure – 0.5 bar
  • Pressure regulating range: PC & AS models – 0.5-4.0 bar, PC CNL – 1.0-4.0 bar
  • Recommended filtration: 130 microns (120 mesh)
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NDJ NAAN PC

THICK-WALLED PRESSURE COMPENSATING DRIPPERS

State-of-the-art cylindrical PC (Pressure- Compensating) dripper ensures highest durability and excellent performance

APPLICATIONS

  • Ideal solution for irrigation in topographically challenging terrain and where long laterals are required
  • For accurate irrigation of orchards, open field crops and greenhouses

STRUCTURE AND FEATURES

  • 16 mm and 20 mm polyethylene dripline with integrated pressure-compensating drippers
  • Double water inlets and outlets per dripper
  • New formulated silicone diaphragm ensures reliable and accurate performance with diverse water qualities, chemicals and fertilizers
  • Individual double filter and flushing mechanism for maximal clog resistance and self-cleaning

TECHNICAL DATA

  • Flow rate: 16mm- 1.1, 1.6, 2.2, 3.5 / 20mm- 0.95, 1.6, 2.2, 3.8
  • Pressure regulating range: 0.5-3.5 bar
  • Operating pressure: 3.0-3.5 bar
  • Wall thickness: 16mm- 0.90-1.15 / 20mm- 1.0-1.20