Manual Stainless Steel Flanged Ball Valve Q41F
 | Manual Stainless Steel Flanged Ball Valve Q41F
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Manual Stainless Steel Flanged Ball Valve Q41F ：
Pipeline contractors, food factory production supervisors and thermal power fluid maintenance teams from Southeast Asia, Middle East and Europe often complain about short service life of cheap cast ball valves. Thin-wall casting ball valves have rough inner cavities that trap oil sludge, beverage sediment and mineral impurities, leading to seal failure and cross leakage after short cycles. Many low-end valves only supply single carbon steel material without stainless steel options, which cannot resist weak acid, salt fog and food-grade sanitary medium corrosion in coastal factories.This two-piece manual stainless steel flanged ball valve solves these practical pipeline isolation pain points. Clients installing this Q41F model on municipal water supply mains, food beverage production pipelines, thermal power steam auxiliary lines and light chemical oil delivery skids share on-site usage experience. Multiple body material options including WCB carbon steel, CF8 304 stainless steel and CF8M 316 stainless steel cover low-cost industrial water, sanitary food production and mild corrosive fluid working conditions. Full port straight bore reduces flow resistance and pressure loss, PTFE soft seat ensures reliable bi-directional zero leakage within -29℃~150℃ operating temperature. Standard JB/T79 flanged connection matches global standard pipeline flanges, simple bolt-on installation without customized adapters; integrated anti-blowout stem design eliminates medium ejection risks under full PN40 pressure load.
Full GB Standard Manufacturing & Inspection Compliance
This two-piece flanged ball valve strictly follows unified national industrial standards accepted by third-party labs and cross-border customs in all target GEO regions, all specifications pass overseas EPC factory project acceptance:
• Design & Manufacturing Standard: GB/T12237
• Face-to-Face Structural Length Standard: GB/T12221
• Flange Connection Standard: JB/T79
• Shell & Seat Tightness Test Standard: GB/T26480Our factory operates integrated production lines including precision steel casting, heavy CNC machining, mirror inner bore polishing and full hydrostatic testing. Every finished flanged ball valve completes shell strength test and bidirectional high-pressure sealing test before delivery. Full MTC material certificates, dimension drawings and pressure test reports can be supplied for overseas factory tendering and customs filing.
Complete Optional Component Material Table
| Component Name | GB Material Options | ASTM Equivalent Standard |
|---|---|---|
| Valve Body & Bonnet | WCB / CF8(304) / CF8M(316) / CF3M(316L) | A216-WCB / A351-CF8 / A351-CF8M |
| Solid Ball Core | WCB / CF8 / CF8M / 1Cr18Ni9Ti | A216-WCB / SS304 / SS316 |
| Anti-Blowout Valve Stem | 2CR13 / F304 / F316 / F316L | A276-410 / A182-F304 / A182-F316 |
| Soft Seating Ring | PTFE / PPL / PEEK | PTFE / PEEK |
| Stem Packing | Flexible Graphite + PTFE | Flexible Graphite / PTFE |
| Gasket | PTFE Flat Gasket / Metal Spiral Wound Gasket | FG Spiral Wound Gasket |
| Bolt & Nut Fasteners | 35# Carbon Steel / 304 / 316 / 316L Stainless Steel | A193-B7 / A194-2H / A320-L7 |
| Manual Hand Lever | QT450 Ductile Iron / Cast WCB Steel | Cast Carbon Steel |
Section Drawing Dimension
• L: Total flange-to-flange body length per GB/T12221 standard
• D: Flange outer diameter; D1: Flange bolt circle diameter; D2: Sealing surface diameter
• z-Φd: Quantity & diameter of flange mounting bolts
• b: Flange thickness; f: Flange sealing boss height
• H: Total vertical height of valve + stem assembly
• W: Full length of manual hand lever / worm gear handwheelTwo-piece split body design simplifies internal maintenance; full port unobstructed straight bore minimizes pressure drop for large-volume water, steam and oil transmission. Standard ISO5211 top mounting platform on bonnet allows later upgrade to pneumatic/electric worm gear actuator without valve replacement. Anti-blowout limit stem prevents medium blowout under high working pressure, two-way floating PTFE seat provides self-compensation sealing after long-term abrasion. Flange end matches PN16/PN25/PN40 multi-pressure class pipeline systems.
Standard Pressure & Temperature Performance Parameters
Three mainstream pressure grades PN1.6 / PN2.5 / PN40 customizable, all test values comply strictly with GB/T26480 inspection rules:
| Performance Item | PN1.6 (1.6MPa) | PN2.5 (2.5MPa) | PN4.0 (4.0MPa) |
|---|---|---|---|
| Nominal Working Pressure | 1.6MPa | 2.5MPa | 4.0MPa |
| Shell Hydrostatic Test Pressure | 2.4MPa | 3.75MPa | 6.0MPa |
| High Pressure Bidirectional Seal Test Pressure | 1.76MPa | 2.75MPa | 4.4MPa |
| Applicable Medium | Tap water, saturated steam, fuel oil, edible beverage, mild weak acid & alkali liquid, clean compressed air | ||
| Continuous Operating Temperature Range | -29℃ ~ 150℃ |
Global Industry Application Scenarios
1.Municipal Water Supply & Waste Water Pipeline Projects (Southeast Asia, Middle East)
Main isolation shut-off valve for urban buried water mains, sewage circulation pipelines. WCB carbon steel version cost-effective for large municipal engineering projects.
2.Food & Beverage Automated Production Lines (EU, Australia)
Sanitary pipeline cut-off valve for dairy, fruit juice, edible oil filling workshops. CF8 304 stainless steel meets food contact hygiene standards, smooth mirror bore easy to clean residual food liquid.
3.Thermal Power & Central Heating Steam Pipelines (Europe, Middle East)
Auxiliary steam line manual ball valve for boiler heating systems, withstand continuous saturated steam temperature up to 150℃ without seal aging.
4.Light Chemical & Fuel Oil Storage Tank Pipelines (All Export Zones)
Oil storage tank inlet & outlet isolation valve for refineries and chemical factories, PTFE seal resists oil swelling and medium permeation leakage.
5.Factory Compressed Air & Circulating Cooling Water Systems (Southeast Asia, USA)
General workshop manual pipeline isolation valve for small & medium manufacturing plants, high cost performance for non-automated manual production lines.
Main isolation shut-off valve for urban buried water mains, sewage circulation pipelines. WCB carbon steel version cost-effective for large municipal engineering projects.
2.Food & Beverage Automated Production Lines (EU, Australia)
Sanitary pipeline cut-off valve for dairy, fruit juice, edible oil filling workshops. CF8 304 stainless steel meets food contact hygiene standards, smooth mirror bore easy to clean residual food liquid.
3.Thermal Power & Central Heating Steam Pipelines (Europe, Middle East)
Auxiliary steam line manual ball valve for boiler heating systems, withstand continuous saturated steam temperature up to 150℃ without seal aging.
4.Light Chemical & Fuel Oil Storage Tank Pipelines (All Export Zones)
Oil storage tank inlet & outlet isolation valve for refineries and chemical factories, PTFE seal resists oil swelling and medium permeation leakage.
5.Factory Compressed Air & Circulating Cooling Water Systems (Southeast Asia, USA)
General workshop manual pipeline isolation valve for small & medium manufacturing plants, high cost performance for non-automated manual production lines.
Selling Points
1.Multi Body Material Options WCB / CF8 / CF8M / CF3M, Match All Working Conditions
Carbon steel for general water/steam; 304/316 stainless steel for food, salt fog and mild corrosive medium, flexible material scheme for overseas project bidding budget control.
2.Two-Piece Split Body, Convenient On-Site Maintenance
No full valve disassembly from pipeline required to replace ball, seat and stem spare parts, reduce pipeline overhaul labor cost and downtime loss.
3.Full Port Large Cv Flow Channel, Ultra-Low Pressure Loss
Unobstructed straight bore minimizes fluid resistance, cut energy consumption of water, steam and oil conveying pump systems.
4.Bi-Directional Self-Compensating PTFE Soft Seal, Long Service Life
Floating seat automatically offsets abrasion clearance after thousands of open-close cycles, stable zero leakage forward and reverse pressure.
5.ISO5211 Standard Top Platform, Support Automatic Retrofit
Direct installation of pneumatic, electric or worm gear actuators for remote automatic control, extend valve service cycle without full replacement.
6.Full DN Sizes In Stock, OEM Customization Available
DN15~DN300 complete specifications ready stock, support OEM brand logo engraving, PPL high temperature seal customization, special anti-sulfur material options.
Carbon steel for general water/steam; 304/316 stainless steel for food, salt fog and mild corrosive medium, flexible material scheme for overseas project bidding budget control.
2.Two-Piece Split Body, Convenient On-Site Maintenance
No full valve disassembly from pipeline required to replace ball, seat and stem spare parts, reduce pipeline overhaul labor cost and downtime loss.
3.Full Port Large Cv Flow Channel, Ultra-Low Pressure Loss
Unobstructed straight bore minimizes fluid resistance, cut energy consumption of water, steam and oil conveying pump systems.
4.Bi-Directional Self-Compensating PTFE Soft Seal, Long Service Life
Floating seat automatically offsets abrasion clearance after thousands of open-close cycles, stable zero leakage forward and reverse pressure.
5.ISO5211 Standard Top Platform, Support Automatic Retrofit
Direct installation of pneumatic, electric or worm gear actuators for remote automatic control, extend valve service cycle without full replacement.
6.Full DN Sizes In Stock, OEM Customization Available
DN15~DN300 complete specifications ready stock, support OEM brand logo engraving, PPL high temperature seal customization, special anti-sulfur material options.