R K Sons Enterprises

150mm Cast Iron (CI) Non-Return Valve (NRV)—ideal for procurement, catalogs, and technical reference:

A 150mm CI Non-Return Valve is a unidirectional valve designed to allow fluid flow in one direction and prevent backflow. Commonly used in water supply, pump systems, and process piping, it ensures system protection and efficiency.

• Size: 150mm (6 inches nominal bore)

• Type: Swing Type (most common) or Lift Type

• Body Material: Cast Iron (CI)

• Disc Material: Cast Iron / Bronze / Stainless Steel (depending on application)

• Seat Material: Metal-to-metal or soft-seated (EPDM/Nitrile)

• End Connection: Flanged (as per IS 1538 / ANSI B16.1 / DIN PN10 or PN16)

100mm Cast Iron (CI) Non-Return Valve (NRV) – ideal for use in technical documentation, procurement, or product catalogs:

A 100mm CI Non-Return Valve (NRV) is a one-way valve designed to allow fluid to flow in one direction only, preventing backflow and protecting pumps, pipes, and equipment in various systems.

• Size: 100mm (4 inch nominal diameter)

• Body Material: Cast Iron (CI)

• Type: Swing Type (most common) or Lift Type

• Disc Material: Cast Iron / Bronze / Stainless Steel (depending on model)

• Seat Material: Metal-seated or soft-seated (Rubber/EPDM)

• End Connection: Flanged – Drilled as per IS 1538 / ANSI B16.1 / PN10/16

• Pressure Rating: PN10 / PN16 (varies with design)

• Coating: Fusion-bonded epoxy or red oxide primer (for corrosion protection)

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A 100mm Butterfly Valve is a quarter-turn valve used to regulate or isolate fluid flow in pipelines. It features a rotating disc mounted on a shaft, which opens or closes the valve to control flow.

• Size: 100mm (4 inches nominal diameter)

• Type:

  • Wafer Type (fits between flanges)

  • Lug Type (bolt-on at flanges)

  • Double Flanged (for heavy-duty use)

• Body Material:

  • Cast Iron / Ductile Iron (most common)

  • Stainless Steel (SS304/SS316) for corrosive environments

• Disc Material:

  • Stainless Steel SS304/SS316

  • Ductile Iron with epoxy or nylon coating

  • Aluminum Bronze for seawater or chemical use

• Seat/Liner Material:

  • EPDM (water and air applications)

  • NBR (oil applications)

  • PTFE (chemical resistance)

  • Viton (high temperature)

• Pressure Rating: PN10 / PN16 / ANSI Class 150

• Operation:

  • Manual lever or gearbox

  • Pneumatic or electric actuator (optional)

• Temperature Range: -10°C to +120°C (depending on seat material)

• Face-to-Face Standard: ISO 5752 / EN 558

A 65mm Butterfly Valve is a quarter-turn valve used to regulate or isolate fluid flow in a pipeline. It features a rotating disc inside the valve body, which allows or restricts flow when turned by a lever, gear, or actuator.

• Size: 65mm (2½ inches nominal bore)

• Type:

  • Wafer Type – fits between flanges

  • Lug Type – bolted to each flange

  • Double Flanged – for more secure installations

• Body Material:

  • Cast Iron / Ductile Iron

  • Stainless Steel (optional for corrosive fluids)

• Disc Material:

  • Stainless Steel (SS304/SS316)

  • Ductile Iron with Epoxy or Nylon coating

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MS 90 Degree Elbows are essential pipe fittings made from mild steel, designed to change the direction of fluid flow by 90 degrees in piping systems. These elbows provide a smooth, durable bend that helps maintain the integrity of the pipeline while allowing for efficient directional changes. Widely used in industrial, plumbing, and construction applications, they offer excellent strength, corrosion resistance, and ease of installation.

A Single Plate Wafer Check Valve is a type of non-return valve that allows flow in one direction and prevents backflow. It features a compact wafer design and a single disc (plate) that swings open with forward flow and closes under reverse flow or gravity.

• Prevents backflow in piping systems.

• Automatically closes when fluid flow reverses.