Description
NR-040 "EREZ" swing type check valve allows flow in only one direction and prevents backflow. An opening is provided at its top for easy cleaning and maintenance, without having to remove the
valve from the system.

Main Features
• Working pressure: 3-250 psi. Testing pressure: 360 psi.
• Opening at valve's top for easy cleaning, maintenance and seat replacement without need to remove the valve from the system.
• Minimum head losses and low-cost operation, due to:
- The flap rises above the flow profile and does not disturb the flow.
- Full flow passage, without reduction in diameter.
- Hydrodynamic body and disc design for reduced head losses.
• A rubber stopper prevents the flap from damaging the valve body at maximum opening.
• Can be installed in either horizontal or vertical position. Vertical installation requires a counterweight.
• Supplied with extended shaft on both sides.
• A counterweight or an electric limit switch may be attached to the extended shaft. The limit switch transmits signals whenever flow starts or stops.
• Vulcanized flap prevents wear during closure under pressure.
• Internal parts made of corrosion-resistant materials.
• The flap and the arm are connected at two separate points in order to reduce wear due to impact.

Valve Selection
• The valve is manufactured in sizes ranging from 3" to 36.
• A counterweight or an electric limit switch may be attached to the extended shaft. The limit switch transmits signals whenever flow starts or stops.
• A.R.I Valves may be adapted to different liquids by coating with Enamel or Vulcanized coating, upon request.
• The valve may be ordered to comply with any required standard.
• Optional sealing: bronze on bronze or stainless steel on stainless steel, for operation under adverse or extremely corrosive conditions or where accelerated wear of the rubber flap is expected
• The valve may be ordered with a drainage outlet.
• The valve may be ordered with a body made of stainless steel SAE 316.

Ordering:
Upon ordering, please specify: model, size, working pressure, threads/flanges standard and type of liquid.

More information:

Data sheet (430 KB)

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