Lowest available head loss and low-cost operation, due to:
The flap rises above the flow profile.
Full flow passage, without reduction in diameter. Hydrodynamic body and disc design.
Extended, long-life durability due to:
Corrosion resistant inner parts ensure long term service under adverse conditions.
Damage-free vulcanized flap.
Sealing pressure during closure is exerted only on metal parts, eliminating wear and tear on vulcanized flap.
Surge-resistant body: NR-040 PN-16 cast iron; NR-042 PN-25 Sphero Nodular; NR-044, D-046… PN-40-100 Cast steel body.
Opening at the top of the valve allows for easy cleaning, maintenance, and seat replacement and eliminates the need to remove the valve from the system.
The valve is manufactured in sizes ranging from 3″ to 36″.
Stainless Steel extended Shaft on both sides.
Optional sealing: bronze on bronze or stainless steel on stainless steel for extremely adverse working conditions.
Can be installed in either horizontal or vertical position.
Can be adapted to various types of liquid upon request.
Standard steel body – baked polyester coating.
Available with rilsan and enamel coating, or with a stainless steel body.
- Counterweight to avoid pressure surges.
- Electric limit switch indicator, to transmit signals whenever flow starts or stops.
- Provision for future installation of hydraulic stopper.
- A drainage outlet.
Hydraulic Controlled Check Valve NR-040-HC is available.
Flanges are available in BS/ISO/ANSI standards.
Upon ordering, please specify: model, size, working pressure, threads/flanges standard and type of liquid.