Worm Gear Flanged 3 Way Ball Valve

Hardly can standard two-way ball valves satisfy the demand of medium switching, dual-fluid mixing or single-line diversion inside fluid delivery systems, while three-way ball valves, with interchangeable L-port and T-port ball cores, are capable of three types of pipeline regulation in a single unit. Covering both neutral universal fluids and highly corrosive chemical feedstock, compatible media includes tap water, saturated steam, fuel oils, liquefied petroleum gas, natural gas, coal slurry for neutral service, as well as dilute nitric acid, acetic acid, urea stock solution and various oxidizing chemical solvents for corrosive working conditions. Modifiable valve body materials, ranging from carbon steel and 304/316 stainless steel to fluorine-lined alloy housings, are all mature selection options, so as to match the corrosion, high temperature and abrasion loads brought by diverse process media. 

 Locked within two mainstream standardized pressure grades PN1.6 and PN2.5, this worm gear flanged three-way ball valve can be customized to reach PN40, with all dimensional and pressure test parameters fully aligned with GB/T12237 industrial ball valve design & manufacturing codes and GB/T26480 shell air tightness inspection standards. Matched to corresponding nominal pressure, shell hydrostatic test pressure and high-pressure seat tightness test pressure are formulated to avoid irreversible expansion of sealing gaps, even when natural gas or liquefied gas is delivered under full rated pressure for continuous long-term cycles.

 Unified under JB/T79 flange dimension standards, flanged outline sizes span a complete nominal diameter series from DN15 to DN200, with each bore size matched to fixed body face-to-face length L, flange outer diameter D, bolt circle diameter D1, sealing surface diameter D2, flange thickness b and bolt standard Z-Φd. Overall valve height H and total worm gear handwheel span W expand proportionally with nominal diameter; under DN200 PN2.5 working condition, the full handwheel length hits 1200mm, and such an extended lever arm eliminates the need for auxiliary power equipment during opening and closing of extra-large bore pipelines.

Supplied with integrally forged flanged ends as factory standard, the valve can be bolted directly to industrial pipeline flanges complying with HG/T20592 standards without transition adapters. For compact skid-mounted equipment, narrow installation pits and mobile medium delivery units, non-standard connection ends including female thread, butt weld and clamp types are available on custom order; sealing pressure resistance of all customized ports remains identical to original flanged ends, with no downgrade of pressure limit caused by structural alteration. Multiple Actuation Configurations For Different Automation Demands

Fitted on the physical product in the picture, worm gear manual actuation assemblies stand as the most universal setup for medium-to-large three-way ball valves DN50~DN200; built-in reduction gear discs magnify operating torque, allowing single operators to finish steady 90° flow switching even under full PN2.5 high-pressure load. An ISO5211 universal mounting base is reserved on valve bonnets, enabling direct replacement with pneumatic or electric actuator units without removing the entire valve body in later revamp.

that electrical actuators need explosion-proof certification for natural gas delivery lines. English Apart from worm gear manual structures, three extra drive schemes are simultaneously produced for project selection: simple straight lever manual, double/single-acting pneumatic actuators, on-off /modulating electric actuators. Straight lever manual versions suit small bore DN15~DN45 clean water pipelines; pneumatic drive fits explosion-proof oil & gas plants and chemical workshops without power supply; electric actuators connect to plant-wide central PLC automatic control systems to realize unattended remote diversion management. Worth noting that electrical actuators need explosion-proof certification for natural gas delivery liness.