Cast Iron Mud Box Straight Flange PN 2.5 – PN 4
TECHNICAL DESCRIPTION
Slurry boxes are mainly used in ship piping systems, ensuring the filtration of fluids from solid impurities and respectively maintaining the operability of the entire system. It is possible to perform with a filter element (basket) with different sizes of the filtering screen.
• Straight with connecting flanges of Ru 10, Du 200-300 with supporting feet.
• Size Du 350 can be made with different construction lengths.
WORKING FLUID / MEDIUM
• Fuels, lubricating oil and flammable hydraulic oils, petroleum.
• Seawater and fresh water.
EXECUTION
• Different materials – upon request.
• Different size of the holes of the filtering element (sieve).
Dimensions:DN 40 – 600
Our Cast Iron Mud Box with Straight Flange is engineered for superior performance in demanding industrial drainage and filtration applications. Designed to meet pressure ratings of PN 2.5 to PN 4, this robust component ensures reliable operation in systems handling sediments, debris, and wastewater. Its straight flange design facilitates secure and straightforward installation, making it an ideal choice for municipal, construction, and industrial projects where durability and efficiency are paramount.Constructed from high-grade cast iron, this mud box offers exceptional resistance to corrosion, abrasion, and impact, ensuring a long service life even in harsh environments. Key features include:Pressure rating: PN 2.5 to PN 4 for versatile application compatibilityStraight flange design for easy and secure connection to pipelinesHeavy-duty cast iron construction for maximum durability and reliabilityEffective sediment collection to protect downstream equipment and reduce maintenanceIdeal for use in water treatment plants, stormwater management systems, and industrial processing facilities, this mud box helps maintain system integrity by preventing clogging and damage. Its design complies with industry standards, providing peace of mind for engineers and project managers seeking dependable solutions for fluid handling and filtration challenges.

Materials
| No. | DETAILS | MATERIALS |
|---|---|---|
| 1 | Body | gray cast iron EN-JL1040 (GG25) |
| 2.1 | Filter DN 40-300 | stainless steel 1.4432 (AISI316L) |
| 2.2 | Filter DN 350-600 | stainless steel 1.4401 (AISI316) |
| 3.1 | Pin | DN 40-300 stainless steel 1.4432 (AISI316L) |
| 3.2 | Pin | DN 350-600 stainless steel 1.4401 (AISI316) |
| 4 | O-ring | NBR rubber |
| 5 | Lid | gray cast iron EN-JL1040 (GG25) |
| 6 | Nut | 8.8 FZB |
| 7 | Stud | 8.8 FZB |
| 8 | Schegel | 8.8 FZB |
| 9 | Washer | DN 80-600 copper |
| 10 | Tapa | DN 80-600 brass CW614N (Ms58) |
Features
| SPECIFICATION | |
|---|---|
| Standard | DIN |
| Execution | straight |
| Lid | on bolts |
| Joining | flanged EN 1092-1 |
| Page length | EN 558, series 1 |
| T max. °C | 120 °C |
| Sieve size | DN 40-65 / 5 x 5 mm |
| DN 80-600 / 8 x 8 mm | |
| DN | PN | Flanges | L | D | D1 | H | H1 | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 40 | PN 4 | PN 10 | 200 | 150 | 130 | 191 | 95 | 10 |
| 50 | PN 4 | PN 10 | 230 | 165 | 160 | 214 | 106 | 14 |
| 65 | PN 4 | PN 10 | 290 | 185 | 197 | 252 | 134 | 21 |
| 80 | PN 4 | PN 10 | 310 | 200 | 215 | 282 | 156 | 25 |
| 100 | PN 4 | PN 10 | 350 | 220 | 255 | 323 | 185 | 37 |
| 125 | PN 4 | PN 10 | 400 | 250 | 293 | 394 | 229 | 51 |
| 150 | PN 4 | PN 10 | 480 | 285 | 340 | 447 | 268 | 68 |
| 350 | PN 4 | PN 10 | 610 | 505 | 740 | 300 | ||
| 400 | PN 4 | PN 10 | 740 | 565 | 900 | 430 | ||
| 450 | PN 4 | PN 10 | 1000 | 615 | 1000 | 480 | ||
| 500 | PN 2.5 | PN 10 | 1100 | 670 | 1100 | 555 | ||
| 600 | PN 2.5 | PN 10 | 1100 | 780 | 1100 | 820 |








