PTFE Lined Swing Check Valve (NRV)
Bhudev Polymer PTFE Lined Swing Check Valves are engineered for horizontal or vertical upward flow installation. The fully encapsulated disc swings freely on a fluoropolymer-lined hinge mechanism, providing reliable automatic sealing against backflow in chemical processing lines.
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Quick ReplyKey Engineering Highlights
- Fully encapsulated one-piece or pinned disc resistant to chemical attack
- Integrated hinge mechanism avoids external body penetrations and leak points
- Low cracking pressure allows smooth operation with minimal flow impedance
- Full-port design ensures high flow capacity and low turbulence
All components are manufactured in our specialized industrial facility located at GIDC Chhatral, Dist. Gandhinagar, Gujarat. The seamless fluoropolymer liner completely shields all wetted metal surfaces from chemical attack and fluid contamination.
Available Construction Variants
- Flanged Swing Check
- Wafer Swing Check
| Technical Parameter | Verified Specification Standards |
|---|---|
| Lining Material | PTFE, PFA, FEP |
| Body Material | WCB Carbon Steel, Ductile Iron |
| Size Range | 1" (DN25) to 8" (DN200) |
| Pressure Rating | Class 150# / PN16 |
| Temperature Range | -29°C to +180°C |
| End Connection | Flanged ANSI B16.5 RF |
| Testing Standards | ASTM F1545, API 598 |
Lining Fluoropolymer Options
We select virgin grade fluoropolymers matched precisely to process chemistry and operating temperature:
- PTFE: -29°C to +200°C, universal chemical inertness, in-house paste extrusion.
- PFA: -29°C to +200°C, melt-processable, superior clarity and permeation resistance.
- FEP: -29°C to +150°C, high dielectric strength and smooth non-stick surface.
- PVDF / PP / HDPE: Cost-effective options for mild corrosive and water treatment lines.
Housing & Metallurgy Options
Rugged metallic outer shells provide high pressure containment and mechanical strength:
- Cast Steel: ASTM A216 Gr. WCB for heavy-duty pressure valves and fittings.
- Carbon Steel Pipe: ASTM A106 Gr. B seamless pipe spools with A105 flanges.
- Ductile Iron: ASTM A395 / GGG40.3 for economical vibration-absorbing installations.
- Stainless Steel: CF8 / CF8M (SS304/SS316) for highly corrosive external plant atmospheres.
