3PC Threaded Stainless Steel Ball Valve
 | 3PC Threaded Stainless Steel Ball Valve
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3PC Threaded Stainless Steel Ball Valve ：
Small factory equipment purchasers, lab fluid system engineers and small chemical workshop maintenance supervisors often complain about two common troubles with small-bore pipeline ball valves.First, many two-piece threaded ball valves have a weak split structure; under long-term slight vibration of water pump pipelines, the connecting bolts loosen easily, leading to medium leakage at the valve body joint. Second, most low-cost threaded ball valves adopt 304 material only, which will suffer pitting corrosion quickly when used in brine, weak acid and coastal salt fog environments, requiring frequent valve replacement.This 3-piece 316 stainless steel threaded ball valve solves both issues effectively. Buyers who equip this valve on lab reagent pipelines, seawater desalination small pipelines, beverage filling auxiliary pipes and cosmetic raw material delivery lines share that the three-section split structure delivers higher structural stability against pipeline vibration, and all split joints are locked with double bolts to avoid loose gaps. The integral 316 stainless steel body provides stronger resistance to chloride ion corrosion than ordinary 304 valves, maintaining stable zero-leakage performance for years within -29℃~300℃ working range. The detachable three-piece design allows operators to disassemble the valve body on-site without cutting pipe threads, to replace damaged PTFE sealing seats rapidly and cut maintenance downtime.
Manufacturing & Inspection Compliance Standards
This 3-piece threaded ball valve follows unified domestic and international industrial standards for design, thread connection and delivery tightness testing, all standards are recognized for third-party testing and export customs clearance:
• Design & Manufacturing Standard: GB/T12237
• Thread Connection Standard: ISO7/1, NPT/BSP internal thread optional
• Pressure Tightness Inspection Standard: GB/T26480Our factory runs full production lines including precision stainless steel forging, CNC thread machining, mirror polishing and hydrostatic testing. Every finished valve passes shell strength test and high-pressure sealing test before shipment. Complete material test certificates and pressure test reports can be provided for overseas small project bidding and customs document filing.
Structural Feature & Dimension Parameter Explanation
L: Overall length of three-piece threaded ball valve, unified per GB/T12237 dimension specification
H: Total height of complete valve with handle installed
Thread Type: Female NPT / BSPP internal thread, standard pipe thread for small-bore pipeline assembly
Full port straight flow channel: Smooth inner bore reduces fluid resistance, no medium residue buildup
Three-section split structure: Independent end cap + middle body + rear bonnet, double bolts lock each joint to resist pipeline vibration
Anti-blowout stem structure: Limit step design prevents medium ejection under high pressure working conditions.
Global Industry Application ScenariosH: Total height of complete valve with handle installed
Thread Type: Female NPT / BSPP internal thread, standard pipe thread for small-bore pipeline assembly
Full port straight flow channel: Smooth inner bore reduces fluid resistance, no medium residue buildup
Three-section split structure: Independent end cap + middle body + rear bonnet, double bolts lock each joint to resist pipeline vibration
Anti-blowout stem structure: Limit step design prevents medium ejection under high pressure working conditions.
1. Laboratory & Scientific Research EquipmentCut-off control for lab reagent delivery pipelines, pure water circulation lines of analytical instruments; 316 stainless steel avoids chemical reaction with organic and inorganic reagents.
2. Food, Beverage & Cosmetic Production LinesSmall-branch pipeline switch for beverage filling, edible syrup conveying, cosmetic raw material mixing pipelines; stainless steel meets sanitary contact standards without impurity precipitation.
3. Desalination & Water Treatment Small Skid EquipmentCut-off valve for seawater desalination, brine recycling small pipelines; 316 material resists chloride ion corrosion effectively, solving pitting failure of ordinary 304 valves.
4. Fine Chemical & Pharmaceutical Workshop Auxiliary PipelinesOn-off control of dilute acid, dilute alkali, low-corrosion solvent delivery branch pipes; three-piece vibration-resistant structure adapts pump circulating pipeline environment.
5. Small Industrial Heating & Steam Auxiliary PipesSwitch valve for small boiler auxiliary steam pipelines, factory small heat exchange equipment circulation lines; graphite packing prevents high-temperature steam leakage.
6. Coastal Aquaculture & Marine Small Pipeline ProjectsSmall flow cut-off equipment for seawater aquaculture circulation pipes; 316 stainless steel withstands coastal salt fog and seawater long-term erosion.
Core Reliable Product Advantages
1. Detachable 3-Piece Split Body StructureThree independent sections locked by double bolts each joint, stronger anti-vibration performance than 2PC threaded ball valves; disassembly without pipe cutting to replace sealing seats, lower maintenance cost.
2. Optional 304 / 316 Stainless Steel Body316 version delivers outstanding chloride corrosion resistance, ideal for brine, seawater and coastal humid working conditions; 304 version is cost-effective for clean fresh water and oil pipelines.
3. Standard NPT/BSP Internal Thread ConnectionUniversal international pipe thread, easy to install on small-bore metal plastic pipelines, no extra conversion fitting required.
4. Zero-Leakage PTFE Soft Sealing SystemPrecision polished solid ball core matches PTFE/PPL valve seat tightly, 100% pass tightness test before shipment, stable sealing under rated working pressure.
5. Compact Small-Bore Size & Complete Specification CoverageFull size range DN8-DN100, PN16/PN25 pressure grades available, support OEM custom logo printing and customized handle color.
