Concentric Reducers
Our PTFE Lined Concentric Reducers are specialised fittings in the Lined Pipe & Fittings category, designed to create a secure, corrosion-free, and smooth transition between two different pipe sizes along the same centerline. This design is crucial for maintaining optimal flow dynamics and preventing turbulence in sensitive chemical and high-purity process lines.
Robust Construction and Premium Lining
Built for continuous operation in harsh environments, our reducers combine mechanical strength with unparalleled chemical resistance
- Construction: The metal shell is made from ASTM A234 Gr. WPB, ensuring structural durability, complemented by ASTM A 105 or other robust flanges.3
- Size Transitions: We offer a wide range of size combinations (e.g., $40\text{NB}$ to $25\text{NB}$ up to $250\text{NB}$ to $200\text{NB}$) to meet precise process requirements.
- Lining Material: The seamless internal lining is provided by high-grade PTFE (conforming to ASTM D-4895/4894) or other specified fluoropolymers like PFA, FEP, PP, and PVDF, ensuring a completely inert flow path.4
- Flange Standard: All connections adhere strictly to ANSI B 16.5 and ASA 150# specifications for reliable installation.5
Guaranteed Integrity and High-Pressure Capability
Every Concentric Reducer is meticulously tested to ensure dimensional accuracy, structural integrity, and a non-porous chemical barrier:
| Test | Specification | Result |
| Hydro Test | $29.0 \, \text{kg/cm}^2$ after lining | Confirms structural and pressure capability. |
| Spark Test | $15 \, \text{KV DC}$ after Hydro Test | Guarantees $100\%$ lining non-porosity (verified to ASTM F 1545). |
| Dimentions | $100\%$ Visual Check | Ensures precise dimensional accuracy ($\text{F} \pm 3.0 \, \text{mm}$). |
Choose our PTFE Lined Concentric Reducers for a safe, smooth, and corrosion-proof solution for pipe size reduction while maintaining the centerline of your system.