Basket Strainer 300LBS Cast Steel Body - ANSI Class 300, 2 inch to 20 inch, Flanged RF BW
Tengs Valve is a China Basket Strainer and Bucket Strainer supplier, offering Simplex Basket Strainers in ANSI Class 300LBS with cast steel body construction. Sizes range from 2 inch to 20 inch (DN50 to DN500), with bolted cover design and available with flanged RF or Butt Weld (BW) ends to ASME B16.5 / B16.25. Body materials include cast carbon steel (WCB, LCB, LCC), stainless steel (CF8, CF8M, CF3, CF3M), and duplex stainless steel (DSS 4A and 5A). Screens are supplied in 304SS and 316SS with mesh sizes from 20 to 400 mesh. The large cylindrical basket provides high dirt holding capacity and large filtration area, protecting pumps, instruments and heat exchangers in medium-pressure water, gas, oil and steam service.
Specifications For Basket Strainer 300LBS
• Strainer Type: Simplex Basket Strainer, Bucket Strainer
• Body Structure: Cast Steel Body
• Sizes: 2 inch to 20 inch (DN50 to DN500)
• Pressure Rating: ANSI 300LBS / Class 300
• Suitable Medium: Water, gas, oil, steam etc.
• Body Material: WCB, LCB, LCC, CF8, CF8M, CF3, CF3M, DSS 4A, DSS 5A etc.
• Screen: Stainless Steel (304SS, 316SS)
• Mesh Size: 20, 40, 60, 80, 100, 200, 400 mesh etc.
• End Connection: Butt Weld (BW), Flanged RF (Raised Face)
• Cover Type: Bolted Cover (B.C.)
• Design and Manufacture: ASME B16.34
• Inspection and Test: API 598
• Flange Dimension: ASME B16.5
• BW End Dimension: ASME B16.25
• Face to Face: ASME B16.10
✓ Cast steel body Class 300 basket strainer provides reliable medium-pressure filtration with high dirt holding capacity for general industrial pipeline protection
Basket Strainer Pressure Rating Comparison: Class 150 vs 300 vs 600
| Pressure Class | Design Pressure (bar) | Design Pressure (psi) | Typical Application |
|---|---|---|---|
| ANSI Class 150 | 19.6 | 285 | Water distribution, HVAC, low-pressure industrial piping |
| ANSI Class 300 | 51 | 740 | General hydrocarbon, process piping, medium-pressure service |
| ANSI Class 600 | 102 | 1,480 | High-pressure process, refinery, power plant |
Reference: ASME B16.34. Class 300 is the standard pressure class for medium-pressure process piping and general hydrocarbon service. Class 150 is more economical for water and HVAC service; Class 600 is used for high-pressure refinery and power plant service.
Class 300 Cast Steel Basket Strainer Common Material Selection
| Body Material | Standard | Key Characteristic | Typical Application |
|---|---|---|---|
| A216-WCB | ASTM A216 | Cast carbon steel, cost-effective for Class 300 | Water, steam, oil, gas, general process piping |
| A352-LCB / LCC | ASTM A352 | Low-temperature carbon steel | Cold climate and low-temperature service down to -46°C |
| A351-CF8 (SS304) | ASTM A351 | General corrosion resistance | Water treatment, food and beverage, general chemical |
| A351-CF8M (SS316) | ASTM A351 | Mo-bearing, chloride resistance | Chemical, marine, offshore, chloride-containing media |
| A351-CF3 / CF3M | ASTM A351 | Low-carbon, weld-friendly | Welded construction, corrosive service |
| A890/A995 4A (DSS 4A) | ASTM A890 / A995 | Duplex stainless steel (2205 / F51) | Seawater, desalination, general offshore service |
| A890/A995 5A (DSS 5A) | ASTM A890 / A995 | Super duplex stainless steel (2507 / F53) | Seawater injection, sour gas, subsea high-chloride service |
Reference: ASTM A216, A352, A351, A890, A995. WCB is standard for general Class 300 basket strainer service; CF8M and duplex stainless (4A / 5A) are selected for corrosive and offshore service; LCB and LCC are used for low-temperature service down to -46°C.
Cast Body vs Fabricated Body Basket Strainer (300LBS)
| Item | Cast Body (This Page) | Fabricated Body |
|---|---|---|
| Body Construction | One-piece sand casting | Welded steel plate, multi-piece |
| Size Range | 2 inch to 20 inch (DN50 to DN500) | 8 inch to 36 inch (DN200 to DN900) |
| Wall Thickness | Uniform, thicker walls for Class 300 | Customizable, lighter weight in large sizes |
| Lead Time | Standard patterns, stable lead time | Shorter for large sizes and custom dimensions |
| Typical Application | Medium-pressure process piping, water, oil, gas, chemical | Large diameter pipeline, district heating main lines, custom projects |
Reference: ASME B16.34, API 598. This page covers the cast body version of Class 300 basket strainer. For fabricated body version, please refer to Basket Strainer 300LBS (Fabricated Body).
Basket Strainer 300LBS Cast Body Main Parts and Material List
| No. | Part Name | Carbon Steel | Stainless Steel | Duplex / Super Duplex |
|---|---|---|---|---|
| 01 | Body | A216-WCB, A352-LCB, A352-LCC | A351-CF8, CF8M, CF3, CF3M | A890-4A (DSS 4A), A890-5A (DSS 5A) |
| 02 | Basket / Screen | 304SS, 316SS | 304SS, 316SS | Duplex 2205, Super Duplex 2507 |
| 03 | Wire Mesh | 304SS, 316SS | 304SS, 316SS | Duplex 2205, Super Duplex 2507 |
| 04 | Gasket | Graphite, Graphite + Stainless Steel (304SS / 316SS), PTFE | ||
| 05 | Cover | A105, A216-WCB | A182-F304, F304L, F316, F316L | A182-F51, A182-F53 |
| 06 | Bolt | A193 B7 | A193 B8, A193 B8M | A193 B8M |
| 07 | Nut | A194 2H | A194 8, A194 8M | A194 8M |
| 08 | Drain Plug | A105, A193 B7 | A182-F304, F316, A193 B8, B8M | A182-F51, F53, A193 B8M |
Reference: ASME B16.34, API 598, ASTM A216, A352, A351, A890, A995. Materials may vary by model and pressure rating. Contact us for confirmed material certificate to EN 10204 3.1.
Dimensions for 300LBS Cast Steel Basket Strainer
Reference: ASME B16.5, ASME B16.10. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Basket Strainer 300LBS Cast Steel Body Applications
• Oil and gas process piping: general hydrocarbon, medium-pressure process lines and pump protection with ANSI Class 300 rating.
• Water treatment and distribution: municipal water networks, pump suction and discharge protection with high dirt holding capacity basket.
• Power plant and boiler service: feedwater, condensate and cooling water protection lines with medium-pressure Class 300 rating.
• Chemical and petrochemical: corrosive media filtration with CF8 / CF8M cast stainless steel body and 304SS / 316SS basket.
• HVAC and building services: chilled water, hot water and medium-pressure steam distribution in commercial and industrial buildings.
• Marine and offshore: seawater cooling and offshore platform utility lines with A890-4A (DSS 4A) or A890-5A (DSS 5A) cast body and 2205 / 2507 basket.
FAQ - Basket Strainer 300LBS Cast Steel Body
Q1: What is a Cast Steel Basket Strainer 300LBS?
A: A Cast Steel Basket Strainer 300LBS is a basket type pipeline filter with a one-piece sand-cast steel body rated to ANSI Class 300 (51 bar / 740 psi at ambient temperature). It removes small impurities from liquid, gases and pipe systems using a perforated screen or wire mesh basket. The large cylindrical basket provides high dirt holding capacity and a large filtration area. It is the standard choice for medium-pressure process piping, general hydrocarbon service, water, oil, gas and steam piping where the pressure rating is Class 300.
Q2: What is the size range and end connection available?
A: Cast steel basket strainers 300LBS are available from 2 inch to 20 inch (DN50 to DN500). End connections include Flanged RF (Raised Face) to ASME B16.5, and Butt Weld (BW) to ASME B16.25. Face-to-face dimension follows ASME B16.10. Cover type is bolted cover (B.C.) as standard. For larger sizes up to 36 inch in Class 300, a fabricated body design is available; please refer to the fabricated body page.
Q3: What body materials are available for the cast steel basket strainer?
A: Body materials include cast carbon steel (A216-WCB), low-temperature carbon steel (A352-LCB, A352-LCC) for service down to -46°C, cast stainless steel (A351-CF8, CF8M, CF3, CF3M), duplex stainless steel (A890-4A / DSS 4A / 2205) and super duplex stainless steel (A890-5A / DSS 5A / 2507). WCB is the standard and most economical choice for general medium-pressure water, oil and steam service; CF8M and duplex 4A / 5A are selected for corrosive, seawater and offshore service.
Q4: What is the difference between Class 150 and Class 300 basket strainer?
A: Class 150 basket strainer has a design pressure of 19.6 bar (285 psi) at ambient temperature, while Class 300 basket strainer has 51 bar (740 psi), in accordance with ASME B16.34. Class 300 has thicker wall, larger flange and bolt dimensions, and is suitable for medium-pressure process piping, general hydrocarbon and higher pressure steam service. Class 150 is more economical for low-pressure water, HVAC and general industrial service. Class 300 is typically selected when the process piping rating is Class 300 or higher.
Q5: What screen and mesh sizes are available?
A: Screens are supplied in stainless steel 304SS and 316SS as standard. For corrosive and seawater service, duplex 2205 and super duplex 2507 baskets are available. Mesh sizes include 20, 40, 60, 80, 100, 200 and 400 mesh, tailor-made to customer requirements. For general water and HVAC service, 20 to 40 mesh is common; for process piping and pump protection, 40 to 100 mesh is specified. Please specify the mesh size when requesting a quotation.
Q6: How do I maintain a cast steel basket strainer 300LBS?
A: Maintenance is simple: isolate the strainer, depressurize, remove the cover bolts (bolted cover design), take out the basket, clean or replace the screen and mesh, install a new gasket, and reassemble. The bolted cover design allows basket removal without disconnecting the pipeline. Screen replacement is recommended when the pressure drop exceeds the initial clean-screen value by 0.5-1.0 bar. For continuous operation without pipeline shutdown, a duplex basket strainer configuration is recommended.
Request a Quote for Basket Strainer 300LBS Cast Steel Body
Send us your size, pressure rating (Class 300LBS), body material (WCB / LCB / LCC / CF8 / CF8M / CF3 / CF3M / DSS 4A / DSS 5A), end connection (RF / BW), screen material (304SS / 316SS / 2205 / 2507), mesh size, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
Website: Request a Quote Online
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