Description:
Advance Dual Plate NRVs are designed to allow unidirectional flow and automatically prevent reverse flow in pipelines. These compact and efficient valves feature two spring-loaded plates (discs) that open with forward flow and close instantly when flow stops or reverses, ensuring quick and tight shut-off. Built for high performance, durability, and minimal pressure drop, these valves are ideal for water, steam, oil, gas, and process applications.
Design & Construction:
-
Body Material: Cast Iron / Ductile Iron / WCB / CF8 / CF8M / Alloy Steel
-
Disc: Stainless Steel (SS 304 / SS 316)
-
Spring: Inconel / Stainless Steel
-
Seat: Metal-to-Metal or Soft Seated (EPDM / Nitrile / Viton)
-
Type: Wafer / Lug Type
-
End Connection: Sandwich Type (between flanges)
Standards & Ratings:
-
Design Standard: API 594 / ASME B16.34
-
Pressure Rating: Class 150 / 300 / PN 10 / PN 16
-
Testing: API 598
Features:
-
Compact, lightweight, and space-saving design
-
Low-pressure drop and energy-efficient operation
-
Quick, silent closure to prevent water hammer
-
Maintenance-free with long service life
-
Suitable for both horizontal and vertical installations
Applications:
-
Water & Wastewater Systems
-
HVAC & Firefighting Networks
-
Oil & Gas Pipelines
-
Power & Chemical Plants
-
Industrial & Utility Piping
