Y Type Strainer DIN PN16 PN25 PN40 - DN15 to DN500, Flanged FF RF and BW Ends
Tengs Valve supplies high-quality Y Type Strainers to DIN / EN standard in pressure ratings PN16, PN25 and PN40, manufactured with bolted cover design and available with flanged (FF / RF) or Butt Weld (BW) ends to DIN EN 1092-1. Nominal diameters range from DN15 to DN500. Body materials are supplied to European EN standard including EN-GP-240-GH (1.0619), EN-GX5CrNi18-10 (1.4308), EN-GX5CrNiMo19-11-2 (1.4408), EN-GX5CrNiMoNb19-11-2 (1.4581) and EN-GX2CrNiMoN26-7-4 (1.4469) duplex stainless steel. Screen materials are 304SS, 316SS, 304LSS, 316LSS and DSS with mesh sizes from 10 to 400 mesh. Ideal for water, gas, oil and steam service in European standard piping systems, district heating, and general industrial applications.
Specifications For Y Type Strainer DIN PN16, PN25, PN40
• Nominal Diameter: DN15 to DN500 (DN15 to DN600 available on request)
• Pressure Rating: PN16, PN25, PN40
• Suitable Medium: Water, gas, oil, steam, etc.
• Body Materials (EN / DIN): EN-GP-240-GH (1.0619), EN-GX5CrNi18-10 (1.4308), EN-GX5CrNiMo19-11-2 (1.4408), EN-GX5CrNiNb19-11 (1.4552), EN-GX5CrNiMoNb19-11-2 (1.4581), EN-GX2CrNiMoN26-7-4 (1.4469)
• ASTM Equivalent: A216-WCB, A351-CF8, A351-CF8M, A351-CF8C, A351-CF3M, A890-5A
• Screen Materials: 304SS, 316SS, 304LSS, 316LSS, DSS
• Mesh Sizes: 10, 20, 40, 60, 100, 200, 400 mesh, etc.
• End Connections: Flanged FF (Flat Face), Flanged RF (Raised Face), Butt Weld (BW)
• Flange Standard: DIN EN 1092-1
• Cover Type: Bolted Cover (B.C.)
• Design Standard: EN 12266-1, EN 1092-1, DIN 3230, API 598
• Temperature Range: -29°C to 425°C (-20°F to 800°F)
✓ DIN PN16 / PN25 / PN40 Y strainer supplied to European EN material standard for district heating, water and general industrial service
DIN Y Type Strainer Pressure Rating Comparison: PN16 vs PN25 vs PN40
| Pressure Rating | Design Pressure (bar) | Design Pressure (psi) | Typical Application |
|---|---|---|---|
| PN16 | 16 | 232 | District heating, water distribution, HVAC, general industrial service |
| PN25 | 25 | 362 | Medium-pressure steam, process water, chemical service |
| PN40 | 40 | 580 | High-pressure steam, boiler feedwater, high-pressure process piping |
Reference: DIN EN 1092-1. PN16 is the most common rating for European water and district heating service; PN25 and PN40 are selected for higher pressure and temperature requirements.
DIN PN16 - PN40 Y Type Strainer Material List
| No. | Part Name | EN Material Number | DIN Designation | ASTM Equivalent |
|---|---|---|---|---|
| 01 | Body | 1.0619 / 1.4308 / 1.4408 / 1.4581 / 1.4469 | EN-GP-240-GH / EN-GX5CrNi18-10 / EN-GX5CrNiMo19-11-2 / EN-GX5CrNiMoNb19-11-2 / EN-GX2CrNiMoN26-7-4 | A216-WCB / A351-CF8 / A351-CF8M / A351-CF3M / A890-5A |
| 02 | Screen | 1.4301 / 1.4401 / 1.4306 / 1.4404 | X5CrNi18-10 / X5CrNiMo17-12-2 / X2CrNi19-11 / X2CrNiMo17-12-2 | 304SS / 316SS / 304LSS / 316LSS |
| 03 | Gasket | — | Graphite + Stainless Steel (304SS, 316SS) | Graphite + SS304 / SS316 |
| 04 | Cover | 1.0460 / 1.4301 / 1.4306 / 1.4401 / 1.4404 | P250GH / X5CrNi18-10 / X2CrNi19-11 / X5CrNiMo17-12-2 / X2CrNiMo17-12-2 | A105 / A182-F304 / A182-F304L / A182-F316 / A182-F316L |
| 05 | Bolt | 1.7709 / 1.4301 / 1.4401 | 21CrMoV5-7 / X5CrNi18-10 / X5CrNiMo17-12-2 | A193 B7 / A193 B8 / A193 B8M |
| 06 | Nut | 1.7709 / 1.4301 / 1.4401 | 21CrMoV5-7 / X5CrNi18-10 / X5CrNiMo17-12-2 | A194 2H / A194 8 / A194 8M |
| 07 | Drain Plug | 1.7709 / 1.4301 / 1.4401 | 21CrMoV5-7 / X5CrNi18-10 / X5CrNiMo17-12-2 | A193 B7 / A193 B8 / A193 B8M |
Reference: EN 12266-1, EN 1092-1, DIN 3230. Materials supplied to European EN standard; ASTM equivalents provided for cross-reference. Contact us for confirmed material certificate to EN 10204 3.1.
DIN PN16 - PN40 Y Type Strainer EN Material Selection
| EN Number | DIN Designation | ASTM Equivalent | Typical Application |
|---|---|---|---|
| 1.0619 | EN-GP-240-GH | A216-WCB | District heating, water, steam, general European standard service |
| 1.4308 | EN-GX5CrNi18-10 | A351-CF8 | Water treatment, food industry, chemical service |
| 1.4408 | EN-GX5CrNiMo19-11-2 | A351-CF8M | Chemical, marine, chloride-containing media |
| 1.4581 | EN-GX5CrNiMoNb19-11-2 | A351-CF3M | Welded construction, corrosive service |
| 1.4469 | EN-GX2CrNiMoN26-7-4 | A890-5A | Seawater, desalination, offshore, sour European service |
Reference: EN 10213, EN 10283, EN 10204 3.1. European EN materials are used for DIN PN16-PN40 Y strainers; ASTM equivalents provided for international cross-reference. Contact us for material certificate to EN 10204 3.1.
DIN PN16 - PN40 Y Type Strainer Mesh Selection Reference
| Mesh Size | Aperture (mm) | Application Medium |
|---|---|---|
| 16 mesh | 1.00 | District heating return line, coarse debris removal |
| 20 mesh | 0.84 | European standard for water networks, pump protection |
| 40 mesh | 0.40 | District heating supply line, PN25 steam service |
| 60 mesh | 0.25 | PN40 steam, chemical and process filtration |
| 100 mesh | 0.15 | Fine filtration, chemical and food processing service |
Reference: DIN / EN standard Y strainers are typically supplied with 20–60 mesh SS screens for water and district heating service. Finer mesh 100–400 mesh is available for chemical and precision service; coarser mesh 10–16 mesh is available for large debris removal on request.
DIN PN16 - PN40 Y Type Strainer Face-to-Face Dimension (L)
| Size (DN) | L (mm) |
|---|---|
| 15 | 130 |
| 20 | 150 |
| 25 | 160 |
| 32 | 180 |
| 40 | 200 |
| 50 | 230 |
| 65 | 290 |
| 80 | 310 |
| 100 | 350 |
| 125 | 400 |
| 150 | 480 |
| 200 | 600 |
| 250 | 730 |
| 300 | 850 |
| 350 | 980 |
| 400 | 1100 |
| 450 | 1200 |
| 500 | 1250 |
| 600 | 1450 |
Reference: DIN EN 1092-1, DIN 3230. Face-to-face dimension L may vary by pressure rating. Contact us for detailed dimension drawing.
DIN PN16 - PN40 Y Type Strainer Applications
• District heating and cooling: supply and return lines in European district energy networks requiring DIN EN 1092-1 flanged connection.
• Water distribution: municipal water networks, pumping stations, and building services in European standard piping systems.
• HVAC and building services: chilled water, hot water, and low-pressure steam distribution with FF or RF flanged ends.
• Steam systems (PN25 / PN40): medium and high-pressure steam mains, boiler feedwater, and condensate lines.
• Chemical and process industry: corrosive media filtration with EN-GX5CrNiMo19-11-2 (1.4408) body for European process plants.
• Marine and desalination: seawater and desalination service with EN-GX2CrNiMoN26-7-4 (1.4469) duplex body and DSS screen.
FAQ - DIN PN16 / PN25 / PN40 Y Type Strainer
Q1: What is the difference between PN16, PN25 and PN40 DIN Y type strainers?
A: PN16, PN25 and PN40 are European standard pressure ratings with design pressures of 16 bar (232 psi), 25 bar (362 psi) and 40 bar (580 psi) respectively, in accordance with DIN EN 1092-1. PN16 is the most common rating for district heating and water distribution; PN25 is used for medium-pressure steam and process water; PN40 is selected for high-pressure steam, boiler feedwater and high-pressure process piping.
Q2: What EN / DIN material is used for the body of DIN Y strainers?
A: The DIN PN16-PN40 Y strainer body is supplied to European EN standard, including EN-GP-240-GH (1.0619) for carbon steel, EN-GX5CrNi18-10 (1.4308) for SS304 equivalent, EN-GX5CrNiMo19-11-2 (1.4408) for SS316 equivalent, EN-GX5CrNiMoNb19-11-2 (1.4581) for low-carbon SS316L equivalent, and EN-GX2CrNiMoN26-7-4 (1.4469) for duplex stainless steel. ASTM equivalents are A216-WCB, A351-CF8, A351-CF8M, A351-CF3M and A890-5A respectively. Material certificates are available to EN 10204 3.1.
Q3: What is the difference between FF, RF and BW ends for DIN Y strainers?
A: FF (Flat Face) flanged ends have a flat sealing surface and are common in low-pressure European water and district heating service, typically with a full-face gasket. RF (Raised Face) flanged ends have a raised sealing surface and are used for higher pressure PN25 and PN40 service with a confined gasket. BW (Butt Weld) ends provide a permanent welded connection with no potential leak path, preferred for high-integrity steam and buried pipelines. All flanged ends are to DIN EN 1092-1.
Q4: What is the nominal diameter range available for DIN Y strainers?
A: DIN Y type strainers are available from DN15 to DN500 as standard. Larger sizes up to DN600 are available on request. The DIN standard uses nominal diameter (DN) instead of inch size, which corresponds to the European piping system. For example, DN50 corresponds to approximately 2 inch, DN100 to 4 inch, and DN200 to 8 inch.
Q5: How do I select the right mesh size for DIN district heating service?
A: For district heating service, industry practice in Europe is to use 16–20 mesh for return lines and 20–40 mesh for supply lines. Standard DIN Y strainers are supplied with 20–40 mesh SS screens. For pump protection and heat exchanger protection, select a mesh that captures particles at least 1/3 the size of the smallest critical clearance. For finer filtration in chemical service, 100–200 mesh can be specified.
Q6: How do I maintain a DIN PN16 - PN40 Y strainer?
A: DIN Y strainer maintenance is simple: isolate the strainer, depressurize, remove the cover bolts (bolted cover design), take out the screen, clean or replace it, install a new gasket, and reassemble. The Y-shaped body allows screen removal without disconnecting the pipeline. For continuous district heating operation, a bypass line or dual-strainer configuration is recommended. Screen replacement is recommended when the pressure drop exceeds the initial clean-screen value by 0.5–1.0 bar.
Request a Quote for DIN PN16 - PN40 Y Type Strainer
Send us your DN size, pressure rating (PN16 / PN25 / PN40), material (EN number or DIN designation), end connection (FF / RF / BW), mesh size, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
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