PTFE Lined Instrument Tee
PTFE Lined Instrument Tee Manufacturer
PTFE Lined Instrument Tee by MVS Valves is designed to provide accurate, safe, and leak-proof access for measurement, sampling, or instrumentation integration in aggressive chemical or hygienic fluid systems. Engineered with a full internal PTFE or PFA lining, it ensures complete corrosion resistance and process purity, even under harsh operating conditions. These tees are ideal for industries that demand high reliability and clean flow conditions, including pharmaceuticals, chemical processing, and water treatment plants. Mayur (Valves) System Private Limited, an ISO 9001:2015-certified company, has been a trusted PTFE Lined Instrument Tee 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 Instrument Tees 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.
Available in sizes ranging from ½″ to 1″ (DN 15–25), the PTFE Lined Instrument Tee supports ANSI Class 150 or PN 10–16 pressure ratings and can withstand operating temperatures from –40 °C to +200 °C. Built to meet ASTM F1545, ASME B16.5, and ISO standards, it makes sure vacuum compatibility and long-term mechanical integrity. The reduced branch bore is a design feature that allows it to fit securely between existing pipeline flanges without requiring extensive modifications.
MVS manufactures this tee in both carbon steel and stainless steel variants, using either casting or fabrication methods. Wafer-style models are available for space-constrained installations, offering a compact alternative to traditional full-bodied tees. Whether fabricated from solid MS or SS round bars, each product is crafted with precision and tailored for durability. As a leading PTFE Lined Instrument Tee Manufacturer, MVS Valves delivers dependable solutions tailored to critical process requirements with a focus on quality, compatibility, and operational safety.
Specification
| Specification | Details |
|---|---|
| Size Range | 25 mm to 300 mm |
| Type | Instrument Tee |
| End Connection | Wafer |
| Material | Steel Fabrication – ASTM A234 Gr. WPB, Branches per ASTM A105 / IS 2062, Ductile Iron GGG40.3 / ASTM A395, Cast Steel ASTM A216 Gr. WCB, ASTM A312 TP 304 / 316 : SCH.-40 |
| Flange Dimensions | Wafer Sandwich type, suits DIN PN10 / 16, BS 10, ASME 150 / 300 |
| Lining | Moulded FEP, PFA |
| Lining Options | PVDF, PP, HDPE |
| Lining Thickness | Minimum 3.5 mm / 6.0 overall (±1.0 mm tolerance) |
| Lining Spark Test | 20 KVDC after lining |
| Hydraulic Test | 29 Kg/Cm2 after lining |
Material of Construction
| Steel Frame | ASTM A234 Gr. WPB (ANSI B16.28 compliant) |
| Instrument Tee Pieces | SCH40 compliant |
| Flange Material | ASTM A105 (ANSI B16.5 Class 150), JIS 10K, DIN (on request) |
| Flange Configuration | Standard: One fixed flange; Loose flange on request |
| Lining Standard | Pure FEP / PFA (ASTM D4894 compliant) |
| Additional Sizes | Other nominal sizes and higher diameters available on request |
| Optional Standards | ANSI B16.5 Class 300 flanges on request |
| Performance Options | Vacuum resistance, Antistatic PTFE |
| Material Option | Stainless Steel body |
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 Instrument Tee
Frequently Asked Questions
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What is a PTFE lined instrument tee and what is it for?
A lined wafer-style tee that provides a tapping point for instrumentation — a pressure gauge, transmitter, thermowell or sampling connection — on a corrosive line. Because it is a wafer sandwich design it clamps between two existing flanges rather than needing a spool of its own, so you can add an instrument point to a lined line without re-piping it.
Which body, flange and lining materials are available?
Body in steel fabrication to ASTM A234 Gr. WPB (ANSI B16.28 compliant), with branches per ASTM A105 or IS 2062 and instrument tee pieces to SCH 40. Flange material ASTM A105 to ANSI B16.5 Class 150, with JIS 10K and DIN on request, and ANSI B16.5 Class 300 available. Lining in moulded FEP or PFA (ASTM D4894 compliant), with PVDF, PP and HDPE options, at a minimum 3.5 mm, 6.0 mm overall. A stainless steel body is available as a material option.
What sizes, flange configuration and tests apply?
25 mm to 300 mm, with other nominal sizes and higher diameters on request. End connection is wafer sandwich type, suiting DIN PN10/16, BS 10 or ASME 150/300 flanges. Standard configuration is one fixed flange, with a loose flange on request. Spark tested at 20 KVDC and hydraulically tested at 29 kg/cm² after lining. Vacuum resistance and antistatic PTFE are available as performance options.
Why use a lined instrument tee instead of tapping the pipe directly?
Because you cannot drill and weld a lined pipe — cutting the shell destroys the liner, and welding near it burns it. Any tapping on a lined line has to be made as a lined fitting. The wafer instrument tee is the least invasive way to do it: it drops between two flanges that already exist, so the run itself is never breached.
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, Class 300 and JIS or DIN flanges, vacuum-rated and antistatic liners and loose flange configurations are built to order.