PPEBAZAR

Flapper Type NRV 3" MOC-CS

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₹1,173.00 + GST

MRP ₹1,380.00 15 % Off

The Flapper Type NRV (Non-Return Valve) is a type of check valve that allows fluid (liquid or gas) to flow in only one direction and prevents backflow. The valve operates automatically — the pressure...

The Flapper Type NRV (Non-Return Valve) is a type of check valve that allows fluid (liquid or gas) to flow in only one direction and prevents backflow. The valve operates automatically — the pressure of the fluid opens the flapper disc, and when flow stops or reverses, the disc closes under its own weight or with the help of a spring to prevent reverse flow.

This specific NRV is designed for 3-inch pipeline systems and is constructed using Carbon Steel (CS) for strength and durability in medium to high-pressure applications. The flapper-type design provides a full-flow passage with minimal pressure drop and is ideal for systems that require reliable, low-maintenance backflow prevention.

📐 Specifications:

Parameter	Details
Type	Flapper Type Non-Return Valve (NRV)
Size	3 inch (DN 80)
Material of Construction (MOC)	Carbon Steel (CS)
End Connection	Flanged (as per ANSI B16.5 Class 150/300 or as specified)
Pressure Rating	ANSI Class 150 / 300 (confirm based on application)
Temperature Range	-29°C to +425°C (depending on sealing material)
Flapper/Disc Material	CS or Stainless Steel (optional for corrosion resistance)
Seat Type	Metal-to-metal or Soft-seated (Viton, PTFE, etc.)
Installation	Horizontal (preferred), vertical (upward flow only)
Face-to-Face	As per API 594 / manufacturer standard
Testing Standard	API 598 / IS 6157 (Leakage and Hydrostatic Test)
Applications	Water, Steam, Oil, Gas, Process Fluids, etc.
Design Standard	API 594 / ASME B16.34