PTFE Lined Concentric Reducers
PTFE Lined Concentric Reducers Manufacturer
Mayur (Valves) System Private Limited, an ISO 9001:2015-certified company, has been a trusted PTFE Lined Concentric Reducers manufacturer and exporter since 1978. We export to 40+ countries worldwide, focusing on consistent quality, timely delivery, and a smooth customer experience. Our PTFE Lined Concentric Reducers serve clients across Europe, North America, the Middle East, Southeast Asia, Russia, and other international markets, meeting diverse industrial requirements with dependable solutions and technical expertise.
MVS Valves PTFE Lined Concentric Reducers are engineered to ensure safe and smooth transitions between different pipe diameters while maintaining full resistance to corrosive and high-purity process media. These reducers are lined with seamless virgin PTFE or PFA to provide a non-reactive, contamination-free surface inside the pipe, making them ideal for critical applications where chemical compatibility and purity are essential. Built with a strong metallic outer shell using materials like ductile iron, cast steel, or stainless steel, the reducers ensure structural integrity under harsh operating conditions.
Designed for use in aggressive environments, the PTFE lining offers exceptional durability and thermal stability, suitable for temperatures ranging from –40 °C to +230 °C. The reducers are manufactured to match ANSI Class 150/300 or PN 10–25 pressure ratings and conform to globally recognized standards such as ASTM F1545, ASME B16.9, and relevant ISO specifications.
Each PTFE Lined Concentric Reducer is offered in a variety of lining options such as FEP, PFA, PVDF, and PP, allowing clients to choose the right solution for their specific media and process requirements. These reducers are fully vacuum-rated and perform excellently in chemical plants, pharmaceutical processing, petrochemical units, water treatment systems, and industries where fluid handling involves highly corrosive acids, solvents, or alkalis. With advanced lining technology and high-quality fabrication, MVS ensures that every PTFE lined reducer delivers long-term reliability, leak resistance, and minimal maintenance even under the most challenging service conditions.
Specification
| Specification | Details |
|---|---|
| Size Range | 15 mm X 25 mm to 200 mm X 250 mm (above sizes on request) |
| Type | Concentric Reducer |
| End Connection | Both Sides fixed flanges – Rotating – Fixed On / Off Centres |
| Material | Ductile Iron GGG40.3 / ASTM A395, Cast Steel ASTM A216 Gr. WCB, ASTM A312 TP 304 / 316 : SCH.-40 |
| Flanges | Made from IS 2062 Plates, ASTM A105, CF8 (SS 304), CF8M (SS 316) |
| Flange Dimensions | DIN PN10/16, BS 10, ASME 150 / 300, Mixed |
| Lining | Moulded FEP, PFA |
| Lining Options | PVDF, ETFE, PP, HDPE |
| Lining Thickness | Minimum 3.5 mm / 6.0 overall (±1.0 Lining Tolerance) |
| Lining Spark Test | 20 KVDC After lining |
| Hydraulic Test | 29 Kg/Cm2 After Lining |
| Flange Standard | As per ANSI B 16.5 / B 16.42 |
| Face to Face | As per ANSI B 16.5 # 150 |
| Other Drilling Standards | DIN 2632 / 2633, BS 10 Table D, E, F available on request |
Material of Construction
| Flange | Rotating DIN PN 10/16, BS10, ASME 300, Mixed |
| Extras | Earthing Studs/Lugs, Vent Extensions |
| Geometry | Non Standard Dimensions |
Application Industries
Crude Oil & Natural Gas Industry
Chemical & Petrochemical Industry
Water & Wastewater Treatment
Nuclear & Thermal Power Generation
Food & Beverage Industry
Pharmaceutical & Biotechnology
Pulp & Paper Industry
Mining & Mineral Processing
Marine & Shipbuilding
HVAC & Building Services
Automotive & Paint Chemical Manufacturing
Environmental & Bio Gas Renewable Energy
Steel & Metal Processing
Fertilizer Plants, Polymer Production
Cosmetics & Personal Care
Cement & Construction
Chlor-Alkali Industry
Mineral Acids Industry
Related Valves
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PTFE Lined Concentric Reducers
Frequently Asked Questions
Can’t find your duty condition here? Send us the media, size, pressure and temperature and we will specify the valve. Contact us
What is a PTFE lined concentric reducer and where is it used?
A reducer that changes line size while keeping both pipe centrelines aligned, lined with moulded FEP or PFA. Because the bore narrows symmetrically, it is the default choice in vertical runs and anywhere the line does not need to drain or vent along one wall. Both ends carry lined flange faces so it drops into a flanged run like any other lined fitting.
Which body, flange and lining materials are available?
Body in Ductile Iron GGG40.3 / ASTM A395, Cast Steel ASTM A216 Gr. WCB or ASTM A312 stainless. Flanges from IS 2062 plate, ASTM A105, CF8 (SS 304) or CF8M (SS 316). Lining in moulded FEP or PFA, with PVDF, ETFE, PP and HDPE options, at a minimum 3.5 mm, 6.0 mm overall (±1.0 mm tolerance).
What sizes, flange standards and tests apply?
15 mm × 25 mm up to 200 mm × 250 mm, with larger sizes on request. Flange standard per ANSI B16.5 / B16.42 with face-to-face per ANSI B16.5 #150, and dimensions in DIN PN10/16, BS 10, ASME 150/300 or mixed; DIN 2632/2633 and BS 10 Table D, E, F drilling on request. Spark tested at 20 KVDC and hydraulically tested at 29 kg/cm² after lining.
Concentric or eccentric — which reducer do I need?
Use a concentric reducer in vertical lines and wherever centreline alignment matters. Use an eccentric reducer in horizontal runs: fitted flat-side-up it stops gas pockets collecting at the top of the line, and flat-side-down it lets liquid drain instead of pooling. On pump suction lines an eccentric reducer flat-side-up is standard practice to prevent vapour collecting and causing cavitation.
Are you a manufacturer, and what are your minimum order quantity and customization options?
MVS manufactures at its own works — since 1978, ISO 9001:2015 certified — and exports across several continents. The minimum order quantity is 20 pieces. Stainless bodies, ETFE and PVDF liners, rotating flanges, non-standard dimensions, earthing studs and vent extensions are built to order.