Custom PTFE Lined Sight Glass Pot Factories, Product
Product Description
Core Overview
PTFE Lined Sight Glass Pot is a corrosion-resistant pipe fitting widely used in chemical, pharmaceutical, metallurgical, and environmental protection industries. It features a PTFE lining inside a carbon steel or stainless steel shell, combining the corrosion resistance of PTFE with the mechanical strength of metal, making it ideal for observing the flow status of corrosive media such as acids, alkalis, salts, and organic solvents in pipelines.
Basic Specifications
| Item | Details |
|---|---|
| Product Name | PTFE (Polytetrafluoroethylene) Lined Sight Glass Pot |
| Executive Standards | HG/T 21562, HG/T 21621, ASME B16.5, GB/T 12224 |
| Nominal Diameter | DN15 – DN200 (1/2" – 8") |
| Pressure Rating | PN10, PN16, PN25 / Class 150, Class 300 |
| Structure Type | Straight Through Sight Glass Pot |
| Shell Material | Carbon Steel (Q235B, 20#), Stainless Steel (304, 316L) |
| Lining Material | Polytetrafluoroethylene (PTFE) |
| Lining Thickness | 2.0–5.0 mm (Standard: 3.0–4.0 mm) |
| Glass Material | Borosilicate Tempered Sight Glass |
| Connection Type | Flanged Connection (RF Raised Face) |
| Operating Temperature | -20℃ to +180℃ |
| Applicable Medium | Strong acids, strong alkalis, oxits, organic solvents and other corrosive media |
| Factory Inspection | Hydrostatic pressure test, Spark pinhole leakage test (5kV), Glass pressure resistance test |
| Main Applications | Chemical, pharmaceutical, environmental protection, fluorine chemical, sewage treatment industries |
Typical Dimensions Table
| Nominal Diameter DN | Body Outer Diameter (mm) | Overall Height (mm) | Flange Outer Diameter (mm) | Bolt Circle Diameter (mm) | Lining Thickness (mm) |
|---|---|---|---|---|---|
| 15 | 32 | 160 | 90 | 60 | 3.0 |
| 20 | 38 | 180 | 100 | 70 | 3.0 |
| 25 | 45 | 200 | 115 | 80 | 3.5 |
| 32 | 57 | 220 | 140 | 100 | 3.5 |
| 40 | 76 | 240 | 150 | 110 | 3.5 |
| 50 | 89 | 260 | 165 | 125 | 4.0 |
| 65 | 108 | 290 | 185 | 145 | 4.0 |
| 80 | 133 | 320 | 200 | 160 | 4.0 |
| 100 | 159 | 360 | 220 | 180 | 4.5 |
| 125 | 194 | 400 | 250 | 210 | 4.5 |
| 150 | 219 | 450 | 285 | 240 | 5.0 |
| 200 | 273 | 520 | 340 | 295 | 5.0 |
Core Advantages
| Advantage Category | Specific Content |
|---|---|
| Corrosion Resistance | PTFE lining can resist corrosion from most acids, alkalis, and organic solvents, with a corrosion resistance coefficient of up to 0.99 |
| Low Friction | The friction coefficient of PTFE is only 0.04, which reduces the resistance of fluid transportation and saves energy |
| Temperature Resistance | Can work stably in the temperature range of -200℃ to 260℃, suitable for high and low-temperature environments |
| Non-Stick Property | The surface of PTFE is non-stick, which prevents medium deposition and facilitates cleaning |
| Long Service Life | The service life is 3-5 times longer than that of ordinary pipe fittings, reducing maintenance costs |
Frequently Asked Questions (FAQ)
It provides a secure, visible window into pipelines handling aggressive and corrosive media, allowing operators to monitor fluid flow, color, and process stability without risking equipment degradation.
Borosilicate tempered sight glass is utilized, engineered specifically to resist thermal stress and pressure conditions matching ratings up to PN25 or Class 300 depending on the model.
Each unit undergoes factory quality controls including hydrostatic pressure tests and a non-destructive high-voltage 5kV spark pinhole test to guarantee complete lining continuity.
PTFE lined components can handle designated pressure and negative pressure environments; however, specific vacuum limits depend on lining thickness and operating temperatures.
Standard connections follow industrial flange standards including ASME B16.5 and HG/T guidelines, with raised face (RF) configurations from DN15 up to DN200.
