DIN PN40 Cast Steel Gate Valve - DIN 3352, DN50 to DN800
We supply DIN PN40 Cast Steel Gate Valve as a professional manufacturer and supplier, engineered for medium-high pressure and high-temperature service conditions where PN16 and PN25 designs are insufficient. Manufactured in accordance with DIN 3352, with face-to-face dimensions according to DIN 3202-F5 and flange ends according to DIN 2501. This cast steel gate valve features rising stem OS&Y, bolted bonnet construction, and flexible wedge with hard seal (metal seated) design for reliable shut-off at elevated temperatures. Available in sizes DN50 to DN800 (2″ to 32″) with pressure rating PN40 (40Bar / 4.0MPa). End connections include flanged (RF) and butt weld (BW). Materials include GS-C25, 1.4408, 1.4308, WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12 or equivalent. Actuation options include manual handwheel, gear operated, and bare stem for electric actuator. Ideal for high-pressure steam, boiler feedwater, refinery, chemical, and power generation applications requiring DIN standard compliance.
Specifications for DIN PN40 Cast Steel Gate Valve
• Design & Manufacture: DIN 3352
• Face to Face: DIN 3202-F5
• Flange Ends: DIN 2501
• Inspection and Test: DIN 3230
• Construction: OS&Y, Bolted Bonnet, Solid or Flexible Wedge Design, Hard Seal (Metal Seated)
• Size Range: DN50 to DN800 (2″ to 32″)
• Pressure Rating: PN40 (40Bar / 4.0MPa)
• End Connections: Flanged (RF), Butt Weld (BW)
• Body Materials: 1.4408, 1.4308, GS-C25, WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12 or Equivalent
• Trim Materials: Various trim materials are available to suit different service conditions
• Actuator Type: Manual Handwheel, Electric Actuator, Bare Stem
✓ Designed for medium-high pressure — metal seated hard seal, thicker wall sections, and DIN standard compliance
Gate Valve DIN PN40 Main Parts and Materials
| Part Name | Material | ||
|---|---|---|---|
| Carbon Steel (GS-C25 / WCB) | Stainless Steel (1.4408 / CF8M) | Alloy Steel (WC6 / WC9) | |
| Body | GS-C25 / A216 WCB | 1.4408 / A351 CF8M | A217 WC6 / WC9 |
| Bonnet | GS-C25 / A216 WCB | 1.4408 / A351 CF8M | A217 WC6 / WC9 |
| Wedge / Disc | WCB + 13Cr / STL | CF8M / 1.4408 | WC6 / WC9 + 13Cr / STL |
| Seat (Metal Seated) | 13Cr / STL | SS304 / SS316 | 13Cr / STL |
| Stem | A182 F6a / F304 / F316 | A182 F304 / F316 | A182 F6a / F304 / F316 |
| Bolts / Nuts | A193 B7 / A194 2H | A193 B8 / A194 8, B8M / 8M | A193 B7 / A194 2H |
| Gasket | Graphite / PTFE | Graphite / PTFE | Graphite / PTFE |
| Packing | Graphite / PTFE | Graphite / PTFE | Graphite / PTFE |
Reference: DIN 3352, DIN 3202-F5, DIN 2501, DIN 3230. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.
DIN PN40 Cast Steel Gate Valve Dimensions (DIN3202-F5)
| DN (mm) | NPS (inch) | L (RF/BW) mm |
|---|---|---|
| 50 | 2 | 250 |
| 65 | 2 1/2 | 290 |
| 80 | 3 | 310 |
| 100 | 4 | 350 |
| 125 | 5 | 400 |
| 150 | 6 | 450 |
| 200 | 8 | 550 |
| 250 | 10 | 650 |
| 300 | 12 | 750 |
| 350 | 14 | 850 |
| 400 | 16 | 950 |
| 450 | 18 | 1050 |
| 500 | 20 | 1150 |
| 600 | 24 | 1350 |
| 700 | 28 | 1550 |
| 800 | 32 | 1750 |
Reference: DIN 3202-F5, DIN 2501. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Reference Drawing: DIN PN40 Cast Steel Gate Valve Dimensions (DIN3202-F5).
Industrial Gate Valve Dimension Details
Typical Applications of DIN PN40 Cast Steel Gate Valve
• High-pressure steam systems: boiler steam and power plant high-pressure auxiliary lines.
• Boiler feedwater: medium-high pressure feedwater lines in power generation and industrial boilers.
• Refinery and petrochemical: process lines with elevated pressure and temperature service conditions.
• Chemical plants: high-pressure chemical synthesis with CF8M / alloy steel options.
• Power generation: high-pressure cooling water, service water, and auxiliary systems.
• European and international projects: pipelines requiring DIN 3352 / DIN 3202-F5 / DIN 2501 compliance at PN40 pressure rating.
FAQ - DIN PN40 Cast Steel Gate Valve
Q1: What is a DIN PN40 cast steel gate valve?
A: A DIN PN40 cast steel gate valve is a linear motion valve designed for on-off service in medium-high pressure pipelines. It is manufactured to DIN 3352 with face-to-face dimensions per DIN 3202-F5, flange ends per DIN 2501, and inspection & test per DIN 3230. PN40 means the valve is rated for 40 bar (4.0 MPa) nominal pressure.
Q2: What is the difference between DIN PN25 and DIN PN40 gate valves?
A: DIN PN40 gate valves have thicker wall sections, heavier flanges, and higher pressure/temperature ratings than PN25. They feature hard seal (metal seated) design for reliable shut-off at elevated temperatures. PN25 is preferred for medium-pressure steam and district heating applications, while PN40 is preferred for high-pressure steam, boiler feedwater, and refinery processes.
Q3: What is the size range of DIN PN40 gate valves?
A: This DIN PN40 cast steel gate valve is available in sizes DN50 to DN800 (2″ to 32″), covering a wide range of medium-high pressure industrial pipeline applications. Other sizes are available on request.
Q4: What materials are available for DIN PN40 gate valves?
A: Common body materials include 1.4408, 1.4308, GS-C25, WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, and C12. Various trim materials such as 13Cr, STL, SS304, SS316, and F6a are available to suit different service conditions.
Q5: What end connections and actuation options are available?
A: End connections include flanged (RF) per DIN 2501 and butt weld (BW). Actuation options include manual handwheel, gear operated, and bare stem for electric actuator. Other options are available on request.
Q6: What is the difference between hard seal and soft seal gate valves?
A: Hard seal (metal seated) gate valves use metal-to-metal contact between the wedge and seat, suitable for high temperature and high pressure service, and resistant to wear and erosion. Soft seal (elastomer seated) gate valves use rubber or PTFE seats, providing better sealing performance at lower temperatures but limited by the temperature rating of the soft material. For PN40 service, hard seal is typically recommended.
Get a Fast Quote for DIN PN40 Cast Steel Gate Valve
Send us your size (DN50 – DN800), pressure rating, material, end connection, actuation type, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
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