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| The Floating Ball Valve is an expertly engineered quarter-turn industrial valve designed to deliver ultra-reliable, tight shutoff and efficient on/off control across a broad range of general and severe utility pipelines. Unlike trunnion-mounted designs, the ball within a floating ball valve configuration is not anchored by a fixed lower pivot stem. Instead, it is held in position by two synthetic polymer elastomer seat rings. Under upstream pressure, the ball exhibits a minor downstream shift, compressing firmly against the downstream seat ring to form a highly tight, leak-proof, gas-tight seal. Constructed for robust performance and structural longevity, the valve housing can be forged or cast from heavy-duty industrial materials. Standard options include ASTM A216 WCB carbon steel for general industrial duties, and ASTM A351 CF8 or CF8M stainless steel for superior corrosion resistance and low-temperature applications. It exhibits a highly compact profile that minimizes the structural footprint on piping grids, significantly reducing overall plant construction and infrastructure weight while simultaneously optimizing fluid flow velocity. This valve series is optimized for low-operating-torque requirements, making it seamlessly compatible with compact manual levers, automatic pneumatic actuators , or precise electric gear drives. Engineered with a full-bore or reduced-bore interior design, it maximizes throughput while keeping line friction and pressure drops at an absolute minimum. It is rated for nominal operating pressures up to PN40 or ASME Class 150/300, and fully accommodates a continuous working temperature spectrum from -29°C to 200°C. Manufactured and rigorously tested in strict compliance with GB/T 12237, ISO 17292, and ASME B16.34 standards, this floating ball valve series incorporates advanced built-in safety systems. These systems include a blowout-proof stem assembly, a reliable anti-static grounding mechanism that ensures constant electrical continuity between the ball, stem, and valve body, and a certified fire-safe secondary lip profile that prevents medium leakage even if the primary soft seats are completely destroyed in an external plant fire incident. It serves as an ideal and highly dependable selection for modern fluid transmission infrastructures. | |||||||||
SDF
Parameter | Specification |
Size | DN15~300 |
Pressure | PN10~PN40 (or Class 150) |
Material | Carbon Steel (WCB), Stainless Steel |
Standard | GB/T 12237 |
Medium | Water, Vapor, Oil, Gas |
Temperature | -29~200℃ |
Bidirectional Bubble-Tight Sealing: The downstream floating seat design relies directly on process medium pressure to optimize sealing integrity, effectively achieving Zero-Leakage (Rate A per EN 12266-1) for both liquids and gases.
Compact Architecture & Low Weight: Features minimized face-to-face dimensions and reduced weight compared to heavy gate or globe valves, which simplifies installation in confined piping spaces and eliminates the need for expensive pipe supports.
Blowout-Proof Stem Architecture: The valve stem is designed with an integral internal shoulder. This feature ensures that even under maximum internal pipe pressures, the stem cannot be ejected from the body bonnet, safeguarding plant operators.
Integrated Anti-Static Devices: Embedded metallic springs maintain continuous contact between the ball, stem, and body. This rapidly discharges electrostatic build-up caused by fluid friction, completely mitigating spark hazards in volatile atmospheres.
Self-Relieving Seat Mechanism: Advanced seat geometry allows the pressure within the central body cavity to safely vent upstream into the line if trapped liquid undergoes thermal expansion, preventing catastrophic localized over-pressurization.
The floating ball valve is explicitly designed for high-cycle and quick-acting pipelines handling clean, non-abrasive fluids, gases, and saturated low-pressure steam. Its quick 90-degree execution profile makes it highly suited for automation loops.
Primary Applications Include:
Water Distribution & Utility Lines: Industrial cooling water networks, reverse osmosis water treatment, and standard municipal supply loops.
Steam and Thermal Utilities: Low-to-medium pressure saturated steam systems, condensate return pipelines, and HVAC thermal distribution grids.
Oil & Gas Processing: Fuel gas distribution line skids, terminal loading lines, non-abrasive crude oil networks, and chemical tank farm piping.
Chemical & Light Industry: Nitrogen blanketing networks, clean air compression systems, and general process chemical transfer lines.
Size and Pressure Limitations: Floating ball valves are highly optimized for sizes up to DN200 (NPS 8"). For sizes larger than DN200 or for extremely high pressures (Class 600 and above), always switch to a Trunnion-Mounted Ball Valve design. This prevents the operational torque from becoming excessively high and avoids overloading the downstream seat polymer.
Sealing Polymer Selection: For standard industrial utilities up to 120°C, pure PTFE provides low torque and exceptional economy. For steam or high-temperature lines up to 200°C, reinforced R-PTFE (glass-fiber or carbon-filled) must be used to enhance mechanical resistance against polymer cold flow. For specialized severe service up to 250°C, PEEK or Metal-to-Metal seats should be chosen.
Actuator Sizing & Safety Factors: When matching the valve with a pneumatic actuator (如图片 image_b1f229.png 中所示), always apply a minimum 30% torque safety margin above the manufacturer’s clean-water wet torque to account for fluid packing drag, low-frequency cycle stick-slip effects, or seat aging.
Media Cleanliness Requirements: Floating ball valves are soft-seated valves intended for clean media. If the process fluid contains solid sand, iron scales, or abrasive slurries, avoid standard soft seats, as particles can become embedded in the polymer, permanently scarring the ball and causing catastrophic leakage. Instead, specify hard-faced metal-to-metal seating configurations.
1.When can I get a quotation?
We typically provide a quotation within 4 hours of receiving your inquiry. Urgent requests are given priority.
2.Do you support customized valves?
Yes. We support OEM and customized valves according to drawings, specifications, and special working conditions.
3.What is the production lead time?
Normally, production can be completed within 15 working days after order confirmation, depending on product type and quantity.
4.What standards do your valves comply with?
Our products comply with GB, ANSI, API, JIS, DIN, BS, and other international standards.
5.What pressure, size, and temperature ranges can you supply?
Pressure: Class 150-3500 Size: DN10-DN3000 Temperature: -196ºC to 610ºC
6.What certifications do you have?
We are certified with ISO 9001, CE, and provide third-party inspection and test reports upon request.
7.What delivery and payment terms do you offer?
Delivery terms: EXW, FOB, CFR, CIF
Payment terms: T/T (30% deposit + 70% balance), L/C, and other terms by agreement.
8.Do you provide technical support and spare parts?
Yes. We offer 24/7 technical support and supply spare and consumable parts for long-term service.
