Grooved Reducing Tee

Franta Grooved Reducing Tee is a stainless steel grooved fitting for branch connections with pipe size transitions. Available in 304/316L stainless steel with multiple reducing size combinations, it is suitable for water supply, pump rooms, commercial buildings, public facilities and utility piping systems.

Material: 304,316L
Standard: EN10312
Connection Type: Grooved
Fitting Category: Grooved Tees / Crosses
Fitting Type: Grooved Reducing Tee

Multiple materials available

Complete specifications

Project Engineering Adaptation

Comprehensive product lineup

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Product Description
Product Specifications
Manufacturing Process
Quality Inspection
Packaging and Delivery

Product Introduction
Franta Grooved Reducing Tee is a stainless steel grooved fitting designed to create a branch connection between a main pipeline and a branch pipe of a different size. It combines branch distribution and pipe size transition within one fitting for larger-diameter stainless steel piping systems.
The product is available in 304 and 316L stainless steel and is suitable for EN 10312 stainless steel piping systems. Multiple reducing size combinations are available for water supply, pump rooms, commercial buildings, public facilities, utility projects and equipment-side piping applications.
As part of the Franta grooved piping system, the Grooved Reducing Tee can be matched with stainless steel tubes, grooved clamps, elbows, reducers, flange adapters, valves and other compatible system components.
Product Features
1. Reducing Branch Connection
Designed to connect a main pipeline with a smaller branch outlet, combining branch distribution and pipe size transition in one grooved fitting position.
2. Grooved Connection Design
The grooved end structure is designed for connection with compatible grooved clamps and sealing components.
3. 304 / 316L Stainless Steel
Available in 304 and 316L stainless steel to meet different project, environmental and water supply requirements.
4. Large-Diameter Application
Suitable for mains, risers, pump room pipelines and equipment-side piping sections where reducing branch connections are required.
5. EPDM Sealing Compatibility
Designed for use with compatible EPDM sealing components according to the latest product specification and project requirements.
6. Complete Grooved System Compatibility
Can be coordinated with Franta stainless steel tubes, grooved clamps, elbows, reducers, flange adapters, valves and pipe accessories.
Application Scenarios
Main and Branch Water Supply Lines
Suitable for larger-diameter water supply systems where a smaller branch line needs to be connected to the main pipeline.
Pump Rooms and Equipment Rooms
Applicable to pump rooms, mechanical rooms and equipment areas requiring grooved branch connections with pipe size transitions.
Commercial Buildings
Suitable for hotels, office buildings, apartments and commercial complexes requiring reducing branch connections in larger water supply systems.
Public Facilities
Can be used in hospitals, schools, airports, stations and stadiums where stainless steel piping systems require branch distribution with different pipe sizes.
Water Utility Projects
Suitable for water stations, secondary water supply and distribution pipeline projects requiring grooved reducing branch connections.
Connection and System Compatibility
Franta Grooved Reducing Tee is designed for grooved piping systems. Product selection should be based on the required EN 10312 stainless steel tube size combination, grooved clamp specification, sealing component, material grade, installation environment and project requirements.
The fitting can be supplied together with Franta Stainless Steel Tube, Grooved Clamp, Grooved 45° Elbow, Grooved 90° Elbow, Grooved Reducer, Grooved Flange Adapter, valves and other compatible components for complete stainless steel piping system supply.
FAQ
Q1. What is a Grooved Reducing Tee used for?
It is used to create a branch connection between a main pipeline and a branch pipe of a different size in a stainless steel grooved piping system.
Q2. How is a Grooved Reducing Tee different from a Grooved Equal Tee?
A Grooved Equal Tee connects three pipe sections of the same size, while a Grooved Reducing Tee uses a different branch size from the main pipeline.
Q3. What connection method does it use?
It uses a grooved connection and should be matched with compatible grooved clamps and sealing components.
Q4. What materials are available?
304 and 316L stainless steel options are available according to project requirements.
Q5. How should the size combination be selected?
The size combination should be selected according to the main pipe diameter, branch pipe diameter and project piping design.
Q6. What information should be provided for quotation?
Please provide the required size combination, material, quantity, application scenario and project requirements. Matching grooved clamps, stainless steel tubes and other fittings can also be included in the inquiry.

EN 10312
Product Name	Size (mm)
Grooved Reducing Tee	159 × 133
Grooved Reducing Tee	219 × 133
Grooved Reducing Tee	219 × 159
Grooved Reducing Tee	273 × 133
Grooved Reducing Tee	273 × 159
Grooved Reducing Tee	273 × 219
Grooved Reducing Tee	325 × 133
Grooved Reducing Tee	325 × 159
Grooved Reducing Tee	325 × 219
Grooved Reducing Tee	325 × 273

Zhejiang Franta Co., Ltd. has established a standardized production and quality management system. According to the structure, material, and application requirements of different products, the company implements comprehensive process control covering raw materials, forming and machining, welding, heat treatment, surface treatment, cleaning, inspection, and packaging to ensure consistent product quality and meet the requirements of building water supply and drainage systems, domestic water supply, and related engineering applications.
Process Flow Reference
Process Description
Franta develops corresponding manufacturing processes and inspection requirements for different product categories, with standardized control over materials, dimensional accuracy, processing quality, surface condition, and finished product performance. For products subject to specific process requirements, processes such as gas-shielded welding, solution heat treatment, pickling and passivation, and ultrasonic cleaning are applied to further improve product stability, corrosion resistance, and surface cleanliness.
Franta has established a quality inspection system covering raw materials, production processes, and finished products. According to the structure and application requirements of different products, the company conducts appropriate inspections of material, dimensions, appearance, key performance, and finished product condition to ensure that products meet relevant product standards and internal quality control requirements before shipment.
Common Quality Control Items
Material Inspection
Inspection and verification of raw material composition and related material properties.
Dimensional Accuracy Inspection
Inspection of key product dimensions, specifications, and processing accuracy.
Surface Quality Inspection
Inspection of surface condition, cleanliness, and overall appearance quality.
Structural and Processing Quality Inspection
Inspection of forming, welding, connections, and other critical structural areas.
Performance Testing
Depending on product requirements, relevant tests may include sealing, pressure resistance, connection performance, and other applicable performance tests.
Finished Product and Pre-Shipment Inspection
After production is completed, products undergo sampling and pre-shipment inspection, including verification of specifications, quantities, identification marks, and finished product condition.
Quality Control Value
Through comprehensive quality control from raw materials to finished product shipment, Franta continuously improves product consistency and stability, providing a reliable product foundation for residential, commercial, public building, municipal water supply, and industrial applications.
Zhejiang Franta Co., Ltd. uses standardized packaging methods according to the specifications, quantity, transportation distance, and project requirements of engineering pipes, helping reduce the risk of wear, impact, and scratches during transportation and ensuring that products are safely delivered to warehouses, project sites, or designated locations.
Common Packaging Methods
Protective Plastic Film Packaging
Woven Bag Packaging
Bundled Packaging
Steel Strap Binding
Pallet Packaging
Wooden Frame or Wooden Crate Packaging
Customized Labels or Project Shipping Marks
Shipping Information
Engineering orders can be arranged for shipment according to the project delivery schedule, specification list, phased delivery requirements, and on-site receiving conditions. For quotation or order placement, it is recommended to provide the project name, application scenario, material, size range, quantity, delivery location, and whether matching fittings, valves, or other accessories are required.

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Frequently Asked Questions

How Can I Request Franta Product Samples, Technical Documents, Product Selection Support, or a Project Quotation?

You can obtain relevant product information through the Franta website, download center, or contact channels. For projects requiring further product selection support or a quotation, please provide details such as the product name, specifications, quantity, application, and basic project information. Based on your actual requirements, Franta’s sales or technical team can provide product documentation, selection recommendations, sample support, and quotation solutions.

Does Franta Support Bulk Project Supply and Complete Stainless Steel Piping System Solutions?

Yes. Franta offers a comprehensive product range that includes stainless steel pipes, press-fit fittings, grooved fittings, flanged fittings, valves, manifolds, O-ring seals, pipe supports, fasteners, and installation tools. Based on project requirements, Franta can provide systematic product selection and coordinated supply of piping system components, helping reduce compatibility issues between different products and streamline the procurement process.

What Information Is Required to Request a Quotation for an Engineering Project?

To improve product selection and quotation efficiency, please provide information such as the project type, conveyed medium, required material grade, pipe size or specification, connection method, quantity, project location, and any special operating conditions. If design drawings, material lists, or technical specifications are available, they can also be provided. Franta can use this information to recommend suitable products and prepare an accurate quotation.

Does Franta Offer OEM and ODM Services for Stainless Steel Water Tanks?

Yes. Franta provides OEM and ODM services for stainless steel water tanks. Based on project and market requirements, we can discuss customization options for tank dimensions, structural design, surface treatment, accessories, and packaging. OEM and ODM solutions are developed according to the specific requirements and conditions of each order.

What Materials and Manufacturing Processes Are Used for Franta Stainless Steel Water Tanks?

Franta stainless steel water tanks are primarily made from high-quality stainless steel materials. Depending on the product design, manufacturing processes may include forming, welding, and surface treatment. Throughout production, quality control is carried out at key stages such as incoming material inspection, forming, welding, and surface finishing to meet different requirements for tank structure, dimensions, and surface appearance.

What Inspections and Tests Are Required After Installing a Stainless Steel Piping System?

After installation, the pipes, fittings, insertion depth, pressed joints, and pipe supports should be inspected to ensure they have been installed correctly. Pressure testing or other leak-tightness tests should then be carried out in accordance with the applicable project specifications. For concealed piping, the system should be fully inspected and accepted before walls or ceilings are closed or subsequent finishing work begins, ensuring that all requirements are met before proceeding to the next stage of construction.

Which Applications Are EPDM, FKM, and HNBR O-Rings Best Suited For?

Different O-ring materials offer different levels of temperature resistance, chemical compatibility, and aging resistance. EPDM is commonly used in water supply and conventional hot water systems, while FKM is better suited to higher-temperature conditions and certain special media. HNBR can be selected for specific industrial media and operating conditions. For each project, the sealing material should be chosen based on the conveyed medium, operating temperature, system pressure, and technical requirements rather than by color alone.

How Are Press-Fit Stainless Steel Pipe Connections Sealed, and Are They Reliable?

Press-fit stainless steel pipe connections rely on the pipe, fitting socket, O-ring seal, and a dedicated press tool working together to create a secure joint. During installation, the pipe is inserted into the fitting to the specified depth, and the fitting socket is then mechanically pressed with the proper tool. This creates a stable connection between the pipe, fitting, and sealing ring. The reliability of the connection depends on both the precision of the piping components and correct installation in accordance with the specified procedures.

What Is the Franta Active Water System, and How Is It Different from a Traditional Home Water Supply System?

The Franta Active Water System uses looped piping design and dynamic circulation components to keep water moving and refreshed within the piping system, helping reduce long-term water stagnation in certain pipe sections. Unlike traditional home water supply systems that primarily focus on delivering water from one point to another, the Active Water System places greater emphasis on continuous water movement, circulation management, and the overall household water-use experience.