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PTFE Lined Y-Type Strainer
Lined Y strainer, NB 1" to 6", L 190–508 mm
Lined Y-pattern strainer that catches scale, weld spatter and debris before it reaches pumps, valves and instruments. NB 1" to 6", in PFA and FEP.
| Product type | Lined Y-type strainer |
|---|---|
| Body / steel grade | ASTM A 216 Gr. WCB |
| Lining material | PTFE / PFA / FEP |
| Liner standard | ASTM D 3307 (PFA), ASTM D 4894-19 |
| Lining options | Virgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116 |
| Flange standard | ASME/ANSI B16.5 |
| Flange class | Class 150 standard; Class 300 on request |
| Size range | NB 1" to NB 6" |
Product overview
What it does, and where it fits.
A Y-type strainer holds a screen in an angled leg below the flow path, so debris collects where it can be blown down or removed without dismantling the pipework. On corrosive duty the strainer is one of the most vulnerable items in a line — it is a cast body with an internal screen, full of crevices — which is why the lined version matters.
The body is a casting to ASTM A 216 Gr. WCB, the strainer element is PTFE to ASTM D 1457, and the lining is listed as ASTM D 3307 and ASTM D 4894-19. The catalogue marks PFA and FEP as applicable for the lining across the range.
Two dimensions are given: L, the face-to-face length, and H, the height over the strainer leg — the latter matters because it sets the clearance needed below the pipe to withdraw the screen.
Features
Built into every unit.
- Angled screen leg — debris removed without dismantling the line
- Cast body to ASTM A 216 Gr. WCB with fluoropolymer lining
- PTFE strainer element to ASTM D 1457
- NB 1" to 6", L 190 mm to 508 mm, H 128 mm to 450 mm
- Stainless steel body and higher diameters on request
Benefits
Why it earns its place in the line.
- Protects pumps, control valves, flow meters and sight glasses from debris
- Screen withdrawn from the leg without breaking the main flanges
- Outstanding corrosion resistance to aggressive organic and inorganic chemicals across a wide temperature range
- Non-stick, non-wetting bore — low surface energy keeps product moving and simplifies cleaning
- Chemically inert and pure; no additives, plasticisers, stabilisers or lubricants to contaminate the process fluid
- The lowest coefficient of friction of any solid, reducing pressure drop and deposit build-up
Applications & industries
Where it is specified.
Typical applications
- Pump suction protection on corrosive service
- Upstream of control valves, meters and sight flow indicators
- Commissioning strainers catching weld spatter and construction debris
- Continuous protection on lines carrying scale or precipitate
Industries served
- Chemical processing
- Pharmaceutical
- Petrochemical
- Oil & gas
- Power generation
- Pulp & paper
- Mining & metallurgy
- Agrochemicals & dyes
Technical data
Specification for PTFE Lined Y-Type Strainer.
Figures below are for this product only — every item in the range carries its own dimension table.
| Product type | Lined Y-type strainer |
|---|---|
| Body / steel grade | ASTM A 216 Gr. WCB |
| Lining material | PTFE / PFA / FEP |
| Liner standard | ASTM D 3307 (PFA), ASTM D 4894-19 |
| Lining options | Virgin or anti-static (conductive black) PTFE to ASTM D 4894 & D 4895, PFA to ASTM D 3307, FEP to ASTM D 2116 |
| Flange standard | ASME/ANSI B16.5 |
| Flange class | Class 150 standard; Class 300 on request |
| Size range | NB 1" to NB 6" |
| Temperature range | Continuous service to 260 °C (PTFE melting point 327 °C, PFA 306 °C, FEP 260 °C) |
| Pressure rating | ASME/ANSI B16.5 Class 150 flanges as standard; Class 300 available on request |
| Manufacturing standard | ASTM F 1545 |
| Spark testing | Every lined component spark tested at 5000 × E volts (E = liner thickness in mm), to a maximum of 15 000 V |
| Hydro testing | Hydrostatic or pneumatic test according to the lining technique; hydrostatic test on components with vent holes |
| Inspection | Dimensional and visual examination of liner and steel parts — weld aspect, overall dimensions, collar size, liner thickness, surface flaws and paint thickness |
| Vent holes | 3 mm diameter vent holes — one per fitting; spools under 500 mm get a single central hole, spools over 500 mm get two holes about 150 mm from each end |
| External protection | Zinc epoxy primer, minimum 60 μm dry film, over steel sand-blasted to SA 2.5 |
| Certification | EN 10204 3.1 mill certificates and FDA certification for the fluoropolymer available on request |
| Strainer element | PTFE, ASTM D 1457 / ASTM D 4894-19 |
| Size | L | H | PTFE | PFA | FEP |
|---|---|---|---|---|---|
| 1" | 190 | 128 | — | ✓ | ✓ |
| 1.5" | 260 | 190 | — | ✓ | ✓ |
| 2" | 284 | 203 | — | ✓ | ✓ |
| 3" | 348 | 257 | — | ✓ | ✓ |
| 4" | 418 | 307 | — | ✓ | ✓ |
| 6" | 508 | 450 | — | ✓ | ✓ |
All dimensions in mm. H is the overall height over the strainer leg — allow clearance below the pipe to withdraw the screen.
Available on request
- Stainless steel body
- Higher diameters on request
FAQ
Questions we are asked about this item.
The catalogue does not publish a mesh specification for this item. Tell us the particle size you need to retain and the acceptable pressure drop, and we will confirm the screen.
At least the H dimension — 128 mm at NB 1" up to 450 mm at NB 6" — so the screen can be withdrawn from the leg without disturbing the flanges.
Related products
Commonly specified alongside PTFE Lined Y-Type Strainer.
Lined Pipes & Spools
Lined Sight Flow Indicators
Lined Valves
Enquiry
Tell us your line size — we'll confirm the spec.
Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.
Not sure which spec fits your process?
Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.
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