TC NRV
What is a TC NRV
A TC NRV, or Tri-Clamp Non-Return Valve, is a one-way flow control valve used in sanitary piping systems to prevent backflow. Designed with a Tri-Clamp (Tri-Clover) connection, this valve allows fluid to flow in one direction while automatically closing when reverse flow is detected—ensuring hygienic process integrity.
TC NRVs are essential in dairy, food, beverage, pharmaceutical, and biotechnology industries, where maintaining product purity, preventing contamination, and ensuring CIP/SIP compatibility are critical. These valves come with easy-to-disassemble designs for frequent cleaning and sterilization.
Key Features
- Prevents Backflow – Ensures one-way fluid flow, protecting upstream equipment
- Sanitary Design – Easy-to-clean, dead-leg-free construction
- Tri-Clamp Compatibility – Quick installation and removal
- Spring or Ball Type Options – Suited for different flow and pressure conditions
- FDA & USP VI Materials – Ideal for hygienic and aseptic applications
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Specification |
|---|---|
| Size Range | ½” to 4″ (DN15 to DN100) |
| Connection Type | Tri-Clamp / Tri-Clover |
| Body Material | SS316 / SS316L |
| Seal Material | EPDM, Silicone, PTFE, Viton |
| Pressure Rating | Up to 10 bar (145 psi) |
| Temperature Range | -20°C to +200°C (seal dependent) |
| Opening Pressure | 0.1 to 0.3 bar |
| Standards | ASME BPE, 3-A, ISO 2852, DIN 32676 |
| Property | Value |
|---|---|
| Tensile Strength | 485 MPa (min) |
| Yield Strength | 170 MPa (min) |
| Hardness | ≤ 95 HRB |
| Corrosion Resistance | Excellent in food-grade and chemical environments |
| Material | Max Temp (°C) | Key Strength |
|---|---|---|
| EPDM | 135°C | Steam and chemical resistance |
| Silicone | 200°C | Thermal flexibility |
| PTFE | 260°C | Superior chemical inertness |
| Viton | 200°C | Oil, acid & solvent resistance |
| Standard | Equivalent Description |
|---|---|
| FDA | 21 CFR 177.2600 (Seal Materials) |
| USP | Class VI Certification |
| 3-A Sanitary | Hygienic Design Compliance |
| ASME BPE | Biopharma Equipment Standard |
| Size (Inch) | Material | Approx. Weight (grams/pc) |
|---|---|---|
| 1″ | SS316L | 650 |
| 2″ | SS316L | 950 |
| 3″ | SS316L | 1400 |
| 4″ | SS316L | 2100 |
Applications of TC NRV
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the use of a TC NRV in sanitary systems?
A TC NRV prevents reverse flow in hygienic piping, protecting upstream equipment and ensuring product quality in clean environments.
How does a Tri-Clamp NRV work?
It opens when fluid flows in the intended direction and closes automatically when pressure drops or flow reverses, using a spring or gravity-assisted mechanism.
Are TC NRVs suitable for CIP/SIP systems?
Yes, high-grade TC NRVs with FDA- and USP-approved elastomers and a polished internal finish are fully compatible with Clean-In-Place and Steam-In-Place cycles.
Which industries commonly use TC NRVs?
They are widely used in dairy, pharmaceutical, food, beverage, cosmetic, and bioprocessing industries where sanitary backflow prevention is essential.
Can the seals in TC NRVs be replaced?
Yes, the design allows for easy disassembly and quick seal replacement, making it ideal for regular maintenance in hygienic setups.
