Our ball valves deliver fast operation, tight sealing, and low pressure loss for oil & gas, chemical, power, water, marine, and food industries. Available in floating, trunnion, V-type, and top-entry designs for reliable performance in demanding applications.
Key Features & Advantages
• Full-bore design reduces pressure loss and improves flow efficiency.
• 90° rotation enables quick opening and closing.
• Reliable sealing ensures leak-free operation.
• Suitable for PN420 / Class 2500 and temperatures up to 550°C.
• Soft and metal seats provide long service life.
• Compact design saves installation space and weight.
• Fire-safe design meets API 607 / API 6FA standards.
| Item | Details |
| Main Products | Butterfly Valve / Ball Valve / Gate Valve / Globe Valve / Check Valve / Brass Valve Series / Hydraulic Control Valve Series / Pipe Fittings |
| Business Type Supported | OEM, ODM, distributors, agents, wholesalers, engineering companies, project contractors |
| MOQ | 1-100 units |
| Customization Options | Trademarks, materials, colors, pressure ratings, flange standards, packaging options, etc. |
| Application Industries | Water supply and drainage, petroleum, chemical, power, gas, HVAC, irrigation, papermaking, pharmaceuticals, new energy |
| Lead Time | 30-60 days (after contract signing and deposit receipt) |
| Quality Standards | API/CE/ISO/WRAS/EAC/customer standards available |
| Sample Policy | Test samples available |
| Payment Methods | T/T (30% deposit, balance before shipment)/LC negotiable |
| After-Sales Service | 12-month warranty, online technical support |
A typical ball valve consists of the following core components:
Valve body: The primary pressure-bearing component, forming the flow path for the media and the cavity where the ball is mounted. Available in one-piece, two-piece, and three-piece configurations.
Ball: The core opening and closing element, typically a hollow sphere with a central circular hole. Its surface is typically hardened with treatments such as chrome plating and spray welding to enhance wear and corrosion resistance.
Valve seat (seal ring): The key component that forms a seal with the ball. The material used determines the valve’s applicable temperature and media.
Soft seals: PTFE, RPTFE, PPL, Nylon, rubber, etc. Offer good sealing properties but limited temperature resistance.
Hard seals: Metal (stainless steel, Stellite) or ceramic. Offer high temperature and wear resistance, but relatively poor sealing properties.
Valve stem: The transmission component that transmits the operating mechanism’s torque to the ball. Typically, a blowout prevention mechanism is designed.
Stuffing box: Located where the valve stem extends from the valve body, it consists of packing, a packing gland, and other components to prevent media leakage from the stem. Operating mechanism: includes handle, gearbox, electric/pneumatic/hydraulic actuator, etc.
Thrust bearing/bottom bearing: Used to secure the ball valve, bears the weight of the ball and valve stem, and media pressure, reducing operating torque.
The following key factors should be considered when selecting a ball valve:
1. Construction Type:
DN ≤ 150, PN ≤ 40: Floating ball valves are preferred for their economical performance.
DN ≥ 200 or high-pressure applications: A fixed ball valve must be selected to ensure operating torque and tightness.
If adjustment is required: A V-shaped ball valve should be selected.
If high-service maintenance requirements are required: A top-entry ball valve should be selected.
2. Seat Material (determines temperature and media compatibility):
Normal temperature, general media (water, gas, oil): PTFE (-20°C to 180°C).
High temperature or wear resistance: Metal seal (PPL up to 300°C, all-metal up to over 550°C).
Severe corrosion: Fluorine-lined ball valves (FEP/PFA/PTFE lining) or all-alloy ball valves.
Ultra-low temperature (LNG): Cryogenically treated PTFE or metal seals.
3. Pressure Rating and Valve Body Material:
Low pressure: Cast iron, ductile iron. Medium and high pressure: Cast steel (WCB).
Ultra-high pressure, severe service conditions: Forged steel (A105).
Corrosive environments: Stainless steel (CF8/CF8M).
4. Connection methods:
Threaded/Quick-fit: Small diameters, instrumentation, and food industries.
Flange: Universal connection method, easy disassembly.
Butt welding: High pressure, high temperature, permanent installation, no risk of leakage.
Wafer: Space and weight savings.
5. Special functional requirements:
Fire safety: Select a fireproof ball valve that meets API 607/API 6FA standards.
Anti-static: Ensure electrical conductivity between the valve stem and ball.
Lockout: Where locking the open/closed state is required.
Tianjin Dingliu valve Industry Co., Ltd. is a high-tech enterprise specializing in the valve and automation industry.
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