PTFE Lined Blind Flange
Used to terminate lined pipe headers or isolate vessel nozzles safely. The carbon steel backing flange provides mechanical clamping strength while the virgin PTFE lining protects against corrosive fluid contact and eliminates external gaskets.
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Quick ReplyKey Engineering Highlights
- Virgin grade PTFE disc bonded or flared directly to carbon steel plate
- Integral raised gasket face eliminates need for supplementary gaskets
- Full vacuum resistance without liner detachment
- Available with central instrument tap or vent connection if specified
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
- Solid Blind Flange
- Blind Flange with Tapped Instrument Nozzle
| Technical Parameter | Verified Specification Standards |
|---|---|
| Lining Material | PTFE (3mm to 6mm thick), PFA |
| Body Material | ASTM A105 Carbon Steel / IS 2062 Gr. B |
| Size Range | 1/2" (DN15) to 16" (DN400) |
| Pressure Rating | Class 150# / Class 300# / PN16 |
| Temperature Range | -29°C to +200°C |
| End Connection | ANSI B16.5 Class 150 Blind Drilling |
| Testing Standards | ASTM F1545, 20kV Spark Test |
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.
