Manual worm gear 3 way ball valve
This Manual Worm Gear 3 Way Ball Valve (Model Q344F/L Port, Q345F/T Port) is an industrial-grade multi-way fluid control valve with manual worm gear drive mechanism as the core drive and L/T port 3 way flow channel as the main function, tailor-made for medium and large diameter, high pressure working conditions. The worm gear labor-saving mechanism drives the ball to rotate 90° accurately, which can realize the reversing, diverting, converging and mixing control of the pipeline medium.
Category：Three-way ball valve
Call Us Anytime
15669818867
Product Overview
This Manual Worm Gear 3 Way Ball Valve (Model Q344F/L Port, Q345F/T Port) is an industrial-grade multi-way fluid control valve with manual worm gear drive mechanism as the core drive and L/T port 3 way flow channel as the main function, tailor-made for medium and large diameter, high pressure working conditions. The worm gear labor-saving mechanism drives the ball to rotate 90° accurately, which can realize the reversing, diverting, converging and mixing control of the pipeline medium. No air source or power supply is needed, and the opening and closing control of large diameter valves can be completed by pure mechanical manual operation, with labor-saving operation, strong self-locking performance, accurate positioning and reliable sealing.
Available in full sizes DN15–DN600 (NPS 1/2″–24″), it strictly complies with global general industrial valve standards including GB/T 12237, ASME B16.34, API 6D and API 608. The full series is equipped with GB/ANSI standard flanged connection as standard, and is widely used in petrochemical, power plants, municipal pipe networks, metallurgy and mining, water treatment and other industrial scenarios without power and air supply for large diameter multi-way medium control.
Key Features
-
Core Manual Worm Gear Drive Mechanism, Labor-Saving, Self-Locking & Precise Control
The product fully focuses on the core design of manual worm gear, optimized for large diameter and high pressure working conditions:
- Adopting high-strength tin bronze worm wheel + alloy steel worm with precise pairing, optimized transmission ratio design, the operating torque is reduced by more than 90% compared with ordinary handle type. Even under DN200+ large diameter and PN64 high pressure working conditions, it can be easily opened and closed by a single person, fully complying with the industrial valve manual operating force specification requirements;
- Built-in mechanical self-locking function, the ball can be locked at any opening position, no slipping, no over-travel, eliminating valve position fluctuation caused by medium pressure fluctuation, with high positioning accuracy;
- Standard equipped with 90° mechanical limit device, with visual opening indicator disc, which synchronously displays the valve switch status and opening ratio in real time, with intuitive and controllable operation;
- Fully sealed worm gear box design, standard IP65 protection grade, dustproof, waterproof and anti-corrosion, stable long-term operation under harsh working conditions such as outdoor, humid and dusty environments. The internal lubricating grease is locked for a long time, with a long maintenance-free cycle.
- Adopting high-strength tin bronze worm wheel + alloy steel worm with precise pairing, optimized transmission ratio design, the operating torque is reduced by more than 90% compared with ordinary handle type. Even under DN200+ large diameter and PN64 high pressure working conditions, it can be easily opened and closed by a single person, fully complying with the industrial valve manual operating force specification requirements;
- L/T Port Dual Flow Channel Options, Multi-Function for Full Scenarios
The core adopts an integrated L/T port flow channel ball, the inner wall of the flow channel is mirror polished with rounded smooth transition, full port design with low flow resistance and no medium retention dead angle, which perfectly matches the needs of different industrial working conditions:
- L Port Flow Channel: Realizes two-way medium reversing and cross switching control, replacing the combined function of 2 two-way valves, suitable for pipeline flow direction switching and medium cut-off scenarios;
- T Port Flow Channel: Realizes one inlet two outlets diverting, two inlets one outlet converging, three-way full flow mixing, replacing the combined function of 3-4 two-way valves, greatly simplifying the pipeline layout and reducing engineering construction and operation and maintenance costs;Standard equipped with four-seat bidirectional sealing structure with balanced force, which can realize reliable sealing in both forward and reverse directions, eliminating cross flow and internal leakage problems.
- L Port Flow Channel: Realizes two-way medium reversing and cross switching control, replacing the combined function of 2 two-way valves, suitable for pipeline flow direction switching and medium cut-off scenarios;
- Structure Optimized for Working Conditions, Stable Operation Under High Pressure & Large Diameter
Accurate structure matching according to diameter and pressure: DN15-DN50 adapts to floating ball structure, which realizes self-tightening sealing by medium pressure, the higher the pressure, the tighter the seal; DN50-DN600 full range is standard equipped with trunnion mounted double support structure, the ball is equipped with high-precision fixed support shafts on the upper and lower sides, no radial offset and no extrusion deformation of the ball under high pressure working conditions, the opening and closing torque is constant and stable, which completely solves the industry pain points of sudden torque increase, uneven wear of sealing surface and opening jamming of floating ball structure under large diameter and high pressure.
- High-Reliability Sealing Structure, Zero Leakage & Long Service Life
Full coverage of two sealing options for different working conditions, with full adaptability:
- Soft seal type: Standard equipped with PTFE/PPL/PEEK wear-resistant valve seat, paired by high-precision grinding with the ball, the sealing grade reaches ANSI B16.104 Class VI bidirectional zero leakage, suitable for normal temperature and clean medium working conditions;
- Metal hard seal type: The sealing surface of the ball and valve seat is plasma spray welded with Stellite hard alloy and tungsten carbide, with surface hardness up to HRC40-65, high temperature resistance, erosion resistance and anti-seizure, suitable for harsh working conditions such as ≤450℃ high temperature and particle-laden media;
Built-in spring self-tightening valve seat structure, which can automatically compensate for thermal expansion and contraction under high and low temperature working conditions, avoiding sealing failure and opening jamming caused by temperature alternation.
- Soft seal type: Standard equipped with PTFE/PPL/PEEK wear-resistant valve seat, paired by high-precision grinding with the ball, the sealing grade reaches ANSI B16.104 Class VI bidirectional zero leakage, suitable for normal temperature and clean medium working conditions;
- Standard Flanged Connection + Full Material Adaptation, Industrial-Grade Stable & Durable
The full series only adopts standard flanged connection in line with GB/T 9113 and ASME B16.5, with standard RF raised face sealing surface, optional RTJ ring joint face sealing for high pressure working conditions. It can be directly and seamlessly connected with domestic and foreign industrial pipelines of the same standard without modification and adaptation, with convenient installation and maintenance.
All core pressure-bearing parts provide a full range of industrial material options: WCB carbon steel, CF8(304), CF8M(316) stainless steel, duplex steel, WC6/WC9 Cr-Mo steel, etc., perfectly adapting to various working conditions such as water, steam, oil, corrosive media, high temperature and high pressure. The full series is equipped with industrial-grade safety protection as standard: anti-static structure, bottom-mounted T-type blow-out proof stem, API 607 fire-safe structure, which fully eliminates potential safety hazards and is stable and reliable for long-term operation.
Applications
Petrochemical large diameter process pipelines, power plant high pressure steam-water systems, municipal water supply and drainage/heating pipe networks, water treatment large diameter multi-way medium pipelines, metallurgy and mining slurry/dust conveying pipelines, field/remote working condition pipelines without power and air supply, tank farm medium distribution and switching systems, industrial circulating water systems, HVAC large diameter cold and hot water mixing systems.
Product Summary
This Manual Worm Gear 3 Way Ball Valve firmly focuses on the core advantage of manual worm gear labor-saving drive, and has the core characteristics of 3 way multi-channel reversing and diverting function, stable opening and closing under large diameter and high pressure working conditions, no need for air source and power supply, accurate self-locking positioning, reliable sealing, durability and easy maintenance. Covering full diameter sizes and strictly complying with global industrial valve standards, it perfectly adapts to medium and large diameter multi-way industrial pipelines without automation support, and is the preferred special valve for manual medium diverting, converging and reversing control.
