PTFE Lined Sight Flow Indicator
Allows plant engineers to monitor liquid clarity, flow velocity, color changes, and air bubbles in hazardous corrosive pipelines. Offered in dual opposite window configurations and 360-degree full-view cylindrical styles.
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Quick ReplyKey Engineering Highlights
- Heavy-duty toughened Borosilicate 3.3 glass resistant to thermal shock
- Optional PTFE drip lips or flappers for low-velocity flow indication
- PTFE liner shields metallic body completely from fluid contact
- External protective mesh shields protect glass from external impact
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
- Double Window Cross Pattern
- Full View 360° Cylindrical Glass Spool
| Technical Parameter | Verified Specification Standards |
|---|---|
| Lining Material | PTFE, PFA |
| Body Material | WCB Steel / Ductile Iron with Borosilicate Glass |
| Size Range | 1/2" (DN15) to 8" (DN200) |
| Pressure Rating | Class 150# / PN10 / PN16 |
| Temperature Range | -20°C to +180°C |
| End Connection | Flanged ANSI B16.5 RF |
| Testing Standards | ASTM F1545, Hydraulic Shell & Glass Pressure Testing |
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.
