The 3” AND 6" CI Flanged Non-Return Valve (NRV) is designed to allow unidirectional flow and prevent reverse flow in pipelines. Made from high-grade Cast Iron (CI), the valve features flanged ends on both sides for easy bolted installation in standard pipelines. The internal components ensure low-pressure drop and reliable sealing. This valve is ideal for water, wastewater, and general-purpose industrial applications.
Technical Specifications:
| Component |
Specification |
| Valve Type |
Swing Type Non-Return Valve (NRV) |
| Size |
3 inch (80 mm NB) |
| Body Material |
Cast Iron (CI) |
| Disc Type |
Swing Disc |
| Disc Material |
Cast Iron / Optional: Bronze / SS (as per requirement) |
| Sealing Type |
Metal-to-metal or rubber-seated (optional based on spec) |
| End Connection |
Flanged Ends (both sides), Drilled to ANSI B16.1 / IS:1538 |
| Fasteners |
Carbon Steel |
| Working Pressure |
Up to 10 bar (150 psi) |
| Test Pressure |
Body: 15 bar, Seat: 11 bar |
| Coating/Paint |
Enamel Paint / Bitumen / Epoxy (as per requirement) |
| Flow Direction |
Uni-directional (marked on body) |
| Installation |
Horizontal (preferred) / Vertical (with upward flow) |
| Standard |
Conforms to IS:5312 / BS / DIN / API standards (as applicable) |
📐 Specifications:
| Parameter |
Details |
| Type |
Swing Type Non-Return Valve (NRV) |
| Size |
6 inch (DN 150) |
| Material of Construction (MOC) |
Cast Iron (CI) |
| End Connection |
Flanged Ends (Drilled as per IS 1538 / ANSI B16.1) |
| Pressure Rating |
PN 1.6 / Class 125 / 150 (as per standard) |
| Temperature Range |
Upto 120°C (depending on sealing material) |
| Disc Type |
Swing type, mounted on hinge pin |
| Disc Material |
Cast Iron / Bronze / Stainless Steel (varies by design) |
| Seat Type |
Renewable seat / Integral seat |
| Sealing Options |
Metal-to-metal or soft-seated (EPDM/Nitrile) |
| Face-to-Face Dimension |
As per IS 5312 / Manufacturer standard |
| Installation Orientation |
Horizontal (preferred), Vertical (upward flow only) |
| Hydrostatic Test Pressure |
Body: 1.5x rated pressure, Seat: 1.1x rated pressure |
| Standard Compliance |
IS 5312 / BS 5153 / API 598 (testing) |
| Applications |
Water works, HVAC, Firefighting, Drainage, Irrigation, General Utilities |
Key Features:
✅ Cast Iron Body – Durable and economical for water and industrial use
✅ Flanged Ends – Easy installation and alignment in flanged pipelines
✅ Low Pressure Drop – Smooth swing disc operation with minimal flow resistance
✅ Corrosion Protection – Enamel-coated for long service life
✅ Reliable Non-Return Function – Prevents water hammer and reverse flow
Applications:
✔ Water Supply Systems
✔ Industrial Piping Networks
✔ Pump Discharge Lines
✔ Wastewater and Sewage Systems
✔ Fire Protection Systems
The 3” AND 6" CI Flanged Non-Return Valve (NRV) is designed to allow unidirectional flow and prevent reverse flow in pipelines. Made from high-grade Cast Iron (CI), the valve features flanged ends on both sides for easy bolted installation in standard pipelines. The internal components ensure low-pressure drop and reliable sealing. This valve is ideal for water, wastewater, and general-purpose industrial applications.
Technical Specifications:
| Component |
Specification |
| Valve Type |
Swing Type Non-Return Valve (NRV) |
| Size |
3 inch (80 mm NB) |
| Body Material |
Cast Iron (CI) |
| Disc Type |
Swing Disc |
| Disc Material |
Cast Iron / Optional: Bronze / SS (as per requirement) |
| Sealing Type |
Metal-to-metal or rubber-seated (optional based on spec) |
| End Connection |
Flanged Ends (both sides), Drilled to ANSI B16.1 / IS:1538 |
| Fasteners |
Carbon Steel |
| Working Pressure |
Up to 10 bar (150 psi) |
| Test Pressure |
Body: 15 bar, Seat: 11 bar |
| Coating/Paint |
Enamel Paint / Bitumen / Epoxy (as per requirement) |
| Flow Direction |
Uni-directional (marked on body) |
| Installation |
Horizontal (preferred) / Vertical (with upward flow) |
| Standard |
Conforms to IS:5312 / BS / DIN / API standards (as applicable) |
📐 Specifications:
| Parameter |
Details |
| Type |
Swing Type Non-Return Valve (NRV) |
| Size |
6 inch (DN 150) |
| Material of Construction (MOC) |
Cast Iron (CI) |
| End Connection |
Flanged Ends (Drilled as per IS 1538 / ANSI B16.1) |
| Pressure Rating |
PN 1.6 / Class 125 / 150 (as per standard) |
| Temperature Range |
Upto 120°C (depending on sealing material) |
| Disc Type |
Swing type, mounted on hinge pin |
| Disc Material |
Cast Iron / Bronze / Stainless Steel (varies by design) |
| Seat Type |
Renewable seat / Integral seat |
| Sealing Options |
Metal-to-metal or soft-seated (EPDM/Nitrile) |
| Face-to-Face Dimension |
As per IS 5312 / Manufacturer standard |
| Installation Orientation |
Horizontal (preferred), Vertical (upward flow only) |
| Hydrostatic Test Pressure |
Body: 1.5x rated pressure, Seat: 1.1x rated pressure |
| Standard Compliance |
IS 5312 / BS 5153 / API 598 (testing) |
| Applications |
Water works, HVAC, Firefighting, Drainage, Irrigation, General Utilities |
Key Features:
✅ Cast Iron Body – Durable and economical for water and industrial use
✅ Flanged Ends – Easy installation and alignment in flanged pipelines
✅ Low Pressure Drop – Smooth swing disc operation with minimal flow resistance
✅ Corrosion Protection – Enamel-coated for long service life
✅ Reliable Non-Return Function – Prevents water hammer and reverse flow
Applications:
✔ Water Supply Systems
✔ Industrial Piping Networks
✔ Pump Discharge Lines
✔ Wastewater and Sewage Systems
✔ Fire Protection Systems
