High-Performance Swing Check Valves (NRV) by FlowBiz – Automatic Backflow Prevention

Preventing reverse flow and protecting rotating machinery from back-pressure surges is critical in process piping. The FlowBiz Swing Check Valve (Non-Return Valve / NRV) is designed to automatically allow fluid flow in one direction while closing tightly when flow stops or reverses.

Featuring a heavy-duty disc hinged on a top pivot pin, the disc swings open smoothly with forward line pressure and swings back onto the seat when pressure drops. Manufactured in accordance with API 6D and BS 1868 standards, FlowBiz swing check valves offer full-bore flow passages, low hydraulic resistance, and exceptional sealing performance.

Technical Specifications & Features

FlowBiz Swing Check Valves are built to handle high-velocity liquids, gases, and steam lines:

• Valve Type: Swing Check Valve / Swing Type Non-Return Valve (NRV)
• Design Standards: API 6D / BS 1868 / ASME B16.34
• Pressure Rating: ANSI Class 150#, 300#, 600# / PN16 to PN40
• Manufacturing Material (MOC): Cast Carbon Steel (ASTM A216 WCB), Stainless Steel (ASTM A351 CF8 / CF8M), or Forged Steel (A105)
• Trim & Seating: Hardfaced 13% Cr / Stellite / Stainless Steel trim for high wear and erosion resistance
• Cover Design: Bolted Cover (BC) with renewable seat rings for easy maintenance and inspection
• End Connections: Flanged Ends (ANSI B16.5 RF) and Butt Weld (BW) ends

Technical Overview Table

Key Applications Across Industries

FlowBiz Swing Check Valves deliver long service life in continuous processing networks:

• Pump Discharge Lines: Installed directly after centrifugal pumps to prevent media backflow and pump impeller damage.
• Oil & Gas Refineries: Prevents pressure reversal in hydrocarbon headers and crude lines.
• Steam & Boiler Systems: Maintained on feed-water lines and boiler discharge utilities.
• Water & Wastewater Facilities: Ensures uni-directional flow in municipal water pumping stations and treatment plants.

Why Choose FlowBiz Exports Pvt. Ltd.?

FlowBiz engineering ensures max fluid capacity with minimal flow restriction:

• Full-Bore Flow Passages: Unobstructed internal geometry minimizes pressure drop across the valve seat.
• Renewable Seat Rings: Heavy-duty threaded or welded seat rings facilitate quick re-facing and field repair.
• 100% Factory Hydro-Tested: Shell strength and high/low-pressure seat leakage tested per API 598 standards.

Reliable Supply Chain Across India & Abroad

FlowBiz serves as a trusted Swing Check Valve and industrial valve manufacturer. We provide rapid delivery and technical support in:

• Gujarat: Key hubs including Ahmedabad (Odhav, Vatva, Naroda, Sanand), Vapi, Bharuch, Dahej, Gandhidham, and Surat (Hazira, Sachin).
• Maharashtra: Major industrial centers such as Mumbai, Pune, Nashik, Nagpur, and Aurangabad.
• International: Exporting high-performance non-return valves across Africa and global markets.