We manufacture a complete range of fluoroplastic lined accessories, including lined valves, PTFE pipes, and corrosion-resistant fittings. Designed to work directly with our chemical pumps, these components provide dependable containment and safe transfer of aggressive industrial fluids across your entire pipeline network.
| Accessory Category | Base Material | Lining Material | Operating Temp (°C) | Max Pressure (MPa) | Quality Testing |
|---|---|---|---|---|---|
| Lined Pipes & Fittings (Elbows, Tees, Reducers) | Seamless Carbon Steel | PTFE / F46 | -20 to 200 | ≤ 2.5 | 1.5x Hydro Test + 100% Spark Test |
| Lined Globe Valves | HT200 / Cast Steel | F46 / PTFE | -20 to 120 | 1.6 | 1.5x Hydro Test + 100% Spark Test |
| Lined Discharge Valves | Carbon Steel Precision Cast | F46 / PTFE | -20 to 120 | 1.0 | 1.5x Hydro Test + 100% Spark Test |
| Pipeline Sight Glasses | Carbon Steel | PTFE / F46 | ≤ 150 | ≤ 1.5 | 1.5x Hydro Test + 100% Spark Test |
Note: The effective inner diameter of lined pipes is smaller than the nominal diameter of the steel pipe base. Please specify your required effective flow rate and desired flange standards (ANSI, DIN, JIS) when requesting a quotation.
A corrosion-resistant pump requires a perfectly matched pipeline to ensure system integrity. We provide every component necessary to construct a leak-proof chemical transfer network. Below are typical industrial environments where our fluoroplastic lined valves, pipes, and fittings maintain continuous and safe operation.
Constructing primary pipeline networks for transporting highly concentrated sulfuric, hydrochloric, and nitric acids, ensuring zero corrosion degradation in the pipe walls or control valves.
Utilizing PTFE lined pipes and sight glasses to transfer and monitor high-purity solvents and reactive intermediates, strictly preventing any heavy metal contamination from the piping.
Deploying fluoroplastic lined globe valves and discharge valves to safely control the flow of volatile and hazardous petrochemical fluids under elevated temperatures and pressures.
Connecting chemical effluent lifting stations. The complete range of lined elbows, tees, and reducers allows for complex piping geometries in constrained wastewater treatment facilities.
By manufacturing both the chemical pumps and the corresponding fluoroplastic lined valves and piping, we eliminate compatibility issues. You receive a fully integrated, corrosion-resistant fluid transfer system from a single, accountable source.
YFTEL manufactures corrosion-resistant pumps, valves and piping at a 26,000 m² production base in Anhui, with international trade operations headquartered in Hangzhou. The factory runs 200 sets of production equipment, employs 200+ staff including 30+ fluid engineers, and ships over 32,000 pump and valve units per year across 10 series and 300+ models. Production is ISO9001 certified, products carry CE marking, and exports currently reach customers in 30+ countries.
About Us ENGINEERING CASES SolutionsWe manufacture a comprehensive range of accessories, including fluoroplastic lined globe valves, discharge valves, PTFE lined seamless steel pipes, elbows, tees (cross/four-way), concentric/eccentric reducers, sight glasses, and instrument joints.
Our standard PTFE lined pipes and fittings safely handle fluid temperatures ranging from -20°C up to 200°C. They are designed to withstand system pressures up to 2.5 MPa, making them highly reliable for demanding industrial processes.
Yes. Our lining process ensures a tight bond with the steel substrate, allowing the pipes to handle negative pressure. Specifically, they tolerate vacuum conditions down to -0.09 MPa for diameters DN250 and below, and -0.08 MPa for diameters above DN250.
Absolutely. We machine and drill our flanges to meet your specific project requirements, fully supporting international dimensional standards including ANSI, DIN, JIS, BS, HG, GB, and JB. We typically utilize flat face configurations to protect the lining during bolting.
Quality assurance is strict. Every lined pipe and fitting is subjected to a water pressure test at 1.5 times the design pressure. 100% of the internal lining surfaces also undergo a high-voltage electric spark test to detect and eliminate any microscopic pinholes before shipment.
In aggressive chemical processing environments, installing a high-performance corrosion-resistant pump solves only half of the fluid transfer equation. The entire pipeline network (including straight pipe runs, directional elbows, flow-control valves, and monitoring sight glasses) must possess the exact same chemical resistance as the pump itself. Procuring a complete, integrated system of fluoroplastic lined accessories ensures that there are no weak links in your fluid containment strategy. This guide details the engineering specifications, quality testing protocols, and application benefits of using PTFE lined pipes and valves in industrial operations.
Corrosive media such as concentrated sulfuric acid, hydrochloric acid, hydrofluoric acid, and strong organic solvents will rapidly degrade standard carbon steel and even high-grade stainless steel piping. To transport these fluids safely, plant engineers rely on lined piping systems.
These systems consist of a rigid metallic outer armor (typically seamless carbon steel) that provides the structural integrity necessary to withstand high internal pressures, mechanical shocks, and piping loads. The interior of this armor is lined with advanced fluoroplastics, most commonly PTFE (Polytetrafluoroethylene) or F46 (Perfluoroethylene propylene). This composite approach guarantees that the aggressive chemical never makes contact with the vulnerable metal, combining the mechanical strength of steel with the universal chemical inertness of fluoropolymers.
Constructing a reliable chemical pipeline requires a comprehensive range of perfectly matched components. A standard industrial lined piping portfolio includes:
Our PTFE lined pipes are engineered to handle continuous operating temperatures ranging from -20°C up to 200°C. They support standard system pressures up to 2.5 MPa. Crucially, the lining process ensures a tight bond with the steel substrate, granting the pipes excellent vacuum tolerance, down to -0.09 MPa for diameters DN250 and below, and -0.08 MPa for larger diameters.
Controlling the flow of aggressive media requires specialized valves where all wetted mechanisms are isolated from the chemical. The two most common configurations in chemical plants are lined globe valves and lined discharge valves.
Fluoroplastic Lined Globe Valves: Designed for precise throttling and on/off control in pipelines handling acids, alkalis, and salt solvents. The valve body cavity, bonnet, and the portion of the valve stem exposed to the medium are entirely lined with F46 or PTFE. Operating safely between -20°C and 120°C at nominal pressures up to 1.6 MPa, these valves provide tight shut-off and precise flow regulation without internal corrosion.
Fluoroplastic Lined Discharge Valves: Specifically engineered for installation at the bottom of chemical reactors and storage tanks. These valves facilitate the rapid and clean discharge of highly corrosive media, preventing product accumulation and ensuring safe batch transfers.
Integration into existing plant infrastructure requires flexible manufacturing capabilities regarding flange connections. Lined pipes and valves can be equipped with flanges machined to virtually any global standard, including ANSI, DIN, JIS, BS, HG, GB, and JB.
To protect the integrity of the fluoroplastic lining during installation, the sealing faces of the flanges are typically flat face (FF). Additionally, to simplify pipeline assembly and alignment on-site, floating (lap joint) flanges can be provided upon request.
The failure of a chemical pipeline can result in catastrophic environmental damage and severe safety hazards. Therefore, rigorous quality control testing is non-negotiable.
Hydrostatic Testing: Every single lined pipe, fitting, and valve must undergo a hydrostatic water pressure test at 1.5 times its designed maximum working pressure to verify the structural integrity of the steel armor and the flange welds.
Electric Spark Testing: While a hydro-test proves structural strength, it cannot detect microscopic pinholes in the plastic lining. To guarantee absolute containment, 100% of the internal fluoroplastic surfaces are subjected to a high-voltage electric spark test. A specialized probe is passed over the lining; if even a microscopic pinhole exists, an electrical arc will jump to the steel substrate, triggering an alarm. Only components that pass this test with zero defects are approved for shipment.
Procuring chemical pumps from one manufacturer and lined piping from another often leads to mismatched tolerances, flange compatibility issues, and fragmented warranty responsibilities. By sourcing your entire fluid transfer system (pumps, valves, pipes, and fittings) from a single, specialized manufacturer, you ensure perfect material compatibility, synchronized delivery schedules, and a unified point of accountability for the entire chemical loop.
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