Fluorine lined view mirror
You can’t see inside a PTFE-lined pipe — but you can see through a Haoguang lined view mirror. Tempered or quartz glass window, fully encased in a body lined with PTFE, PFA, FEP, or ETFE — the metal never touches the media, and the media never clouds the glass. HG/T 3704 design standard, flanged to HG/T 20592 or ASME B16.5. DN15 to DN250. The only thing between your operators and a clear view of the process — a window that handles acid like a valve.
- Nominal Diameter: DN15 – DN250
- Pressure Rating : PN10 · PN16 · Class 150
- Lining Material: PTFE · PFA · FEP · ETFE · GXPO · PP/PE
- Flange Standards：HG/T 20592 · ASME B16.5 · JIS
- Sight Glass: Tempered glass · Quartz glass
- Lining Inspection: High-frequency spark test 10–20KV
- Design Standards：HG/T 3704
- Temperature Range:PTFE –30~180°C · PFA –30~200°C · ETFE –20~150°C · GXPO –20~180°C
Technical Specifications
Technical Specifications
| Parameter | Details |
|---|---|
| Size | DN15~DN250 / 2″~10″ |
| Pressure | PN10, PN16, Class150 |
| Design & Manufacture Standard | HG/T 3704 |
| Flange Standard | HG/T 20592, ASME B16.5, DN, JIS |
| Inspection & Test Standard | CB/T 13927 |
| Lining Inspection | High-frequency spark test 10-20KV |
| Flange Material | WCB, ASTM A395, CF8, CF8M |
| Glass | Tempered Glass / Quartz Glass |
Lining Materials & Temperature Range
| Lining Material | PTFE | GXPO | PP/PE | PFA | ETFE |
|---|---|---|---|---|---|
| Applicable Temperature (°C) | -30~180 | -20~180 | -20~80 | -30~200 | -20~150 |
HG/T 20592 PN10/PN16 Dimensions (Unit: mm)
| DN | Face-to-Face Length | PN10 | PN16 | H | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | L1 | D | D1 | D2 | b | f | Z-d | D | D1 | D2 | b | f | Z-d | ||
| 15 | 250 | 200 | 95 | 65 | 45 | 14 | 2 | 4-14 | 95 | 65 | 65 | 65 | 65 | 65 | 65 |
| 20 | 250 | 200 | 105 | 75 | 55 | 14 | 2 | 4-14 | 105 | 75 | 55 | 14 | 2 | 4-14 | 112 |
| 25 | 250 | 200 | 115 | 85 | 65 | 14 | 2 | 4-14 | 115 | 85 | 65 | 14 | 2 | 4-14 | 122 |
Technical Drawings
Core Features & Advantages
1. See Through the Acid — Literally The only way to visually confirm flow, color, or phase in a PTFE-lined pipeline. Tempered glass for standard service, quartz glass for high-temperature or high-clarity requirements. Operators get real-time visual feedback — no guesswork, no sampling, no opening the line.
2. Full-Body Lining — Metal Stays Dry The entire body bore is lined with PTFE, PFA, FEP, or ETFE — not just coated, but a formed sleeve bonded into the casting. The glass sits on a lined seat, sealed against a lined gasket face. No exposed metal anywhere in the flow path. Acid splashes against fluoropolymer, period.
3. 10–20KV Spark Tested — Every Single Unit Each lining is high-frequency spark tested at 10–20 kilovolts before it leaves the factory. Pinholes don’t survive that voltage. A lining inspection standard borrowed from chemical vessel manufacturing — applied to every view mirror we ship.
4. Six Lining Chemistries — One Body Platform PTFE to 180°C, PFA to 200°C, ETFE to 150°C, GXPO to 180°C, plus PP/PE for low-cost ambient service. Same face-to-face, same flange drilling across all lining options. Pick the chemistry, not a different mirror.
5. HG/T 3704 + Multi-Standard Flanges Designed to HG/T 3704 with flange options spanning HG/T 20592, ASME B16.5, and JIS. One mirror fits Chinese, American, and Japanese piping systems — procurement stocks one SKU, inspection verifies one design.
Applications
- Acid transfer lines — visual confirmation of flow before starting pumps
- Chemical reactor feed and discharge — verify phase, color, and clarity in real time
- Chlor-alkali brine, HCl, and chlorine gas pipelines
- Aqua regia and mixed-acid etching/cleaning systems
- Liquid chlorine and hydrofluoric acid storage and transfer
- Pharma and fine-chemical solvent lines — batch changeover verification
- Waste acid neutralization — confirm complete reaction before discharge
Why Choose Fluorine lined view mirror?
1. The only window into a PTFE pipeline You can’t use a standard sight glass on hydrofluoric acid — the glass etches. You can’t use a metal one — it corrodes. A fully lined view mirror with quartz glass is the only way to visually monitor flow in the most aggressive chemical lines. If you need to see it, this is how.
2. Factory spark-tested — no pinhole leaves the floor 10–20 kilovolts across every lining before shipping. A pinhole in the PTFE means acid behind the glass, and acid behind the glass means a leak path. We catch it at the factory so you don’t catch it on-site.
3. Six lining options, one body PTFE, PFA, FEP, ETFE, GXPO, PP/PE — same face-to-face, same flange drilling. Upgrade from GXPO to PFA when the process temperature goes up, and the pipe doesn’t move. The mirror stays the same.
4. One mirror, three flange standards HG/T 20592 for Chinese plants, ASME B16.5 for American EPC, JIS for Japanese equipment. Same body, different flange drilling — one SKU in your warehouse.
Haoguang Fluorine Lined View Mirrors — when the line is corrosive but the process needs eyes. DN15 to DN250, quartz or tempered glass, PTFE or PFA. Install it, look through it, trust it.
