PRODUCT FEATURES
Reducing Threaded Tee — Product Features
Water treatment, plumbing systems, machinery piping, food & beverage, light chemical, heating & cooling circuits, pump and valve manifolds, process pipelines requiring flow branch and pipe size transition. Buyer Notes EN 10204 3.1 material test certificate available for bulk orders. OEM marking is acceptable. Samples can be arranged for dimension & thread verification before mass production. Please confirm thread type and all three port sizes before order to prevent fitting mismatch on site.
Product Feature
Water treatment, plumbing systems, machinery piping, food & beverage, light chemical, heating & cooling circuits, pump and valve manifolds, process pipelines requiring flow branch and pipe size transition. Buyer Notes EN 10204 3.1 material test certificate available for bulk orders. OEM marking is acceptable. Samples can be arranged for dimension & thread verification before mass production. Please confirm thread type and all three port sizes before order to prevent fitting mismatch on site.
OPERATING PRINCIPLE
How Reducing Threaded Tee Works
1. **Reducing Tee (Triple Female-Threaded):** Features three female-threaded ports of varying diameters, allowing for both fluid distribution and pipe size reduction within a single fitting.
-
2. **Precision-Cast Construction
** Boasts a robust wall thickness and a dense, uniform metallurgical structure—free from porosity or sand holes—ensuring reliable pressure resistance.
-
3. **AISI 304 Stainless Steel
** Offers excellent rust and corrosion resistance, making it suitable for use with fresh water, mildly corrosive media, and in outdoor environments.
-
4. **Precision-Machined Threads
** Available with NPT, BSPT, or BSPP threads; thread tolerances comply with ISO 7-1, DIN 2999, or ANSI B1.20.1 standards, ensuring a leak-free assembly.
-
5. **150LB Pressure Rating
** Complies with the ISO 4144 standard, suitable for general industrial piping systems.
-
6. **Pickled and Passivated Finish
** Features a uniform metallic surface texture that further enhances corrosion resistance; supports custom marking or engraving on the fitting body.
-
7. **Extensive Size Range
** Available in a wide variety of size combinations, ranging from 1/4″×1/8″ to 4″×3″; supports OEM branding/custom marking.
ENGINEERING DATA
Technical Specifications
Technical data supplied for Reducing Threaded Tee. Ratings and material combinations should be confirmed for the selected configuration.
| PARAMETER | SPECIFICATION |
|---|---|
| Material | AISI 304 (1.4301 / ASTM A182 F304) |
| Type | Reducing Threaded Tee, Reducing Female Thread Tee |
| Thread Standard | NPT (ANSI B1.20.1) / BSPT / BSPP (ISO7/1, DIN2999) |
| Pressure Class | 150LB |
| Standard | ISO 4144 |
| Surface | Pickled & passivated |
| Working Temperature | -20℃ ~ +200℃ |
MECHANICAL DIMENSIONS
Dimensions & drawings.
Compare connection size with the corresponding overall length, bore and handle clearance dimensions from the supplied drawing.
Dimension chart
| Dimensions | Data |
|---|---|
| Status | Dimension table not supplied |
Detailed mechanical dimensions are not included in the supplied spreadsheet.
APPLICATIONS
Applications
Applicable media: the supplied document lists the following fluids. Actual compatibility depends on selected materials, concentration, temperature, pressure and the specific service conditions.
Application – Water Circulation
Cooling water, circulating water, drinking water and neutral purified water.
Application – Steam Piping
Clean, low-temperature saturated steam, subject to the product’s confirmed temperature and pressure limits.
Application – Compressed Air
Compressed air and nitrogen; verify compatibility for each system.
PURCHASING SUPPORT
Frequently Asked Questions
Find answers to common questions about sizing, materials, threaded connections and operating conditions.
1、What is Reducing Threaded Tee?
It is a T-shaped 3-way female threaded fitting. The three ports have different thread sizes, used to split or combine flow when the main line and branch line have different pipe diameters.
Important distinction:
✅ Equal Threaded Tee (FFF): All three ports same size
✅ Reducing Threaded Tee (FFF): Three ports in different sizes
It is different from MFF tee (one male, two female). They cannot replace each other.
2、What thread standards are available?
We support NPT (ASME B1.20.1), BSPT (Rc, EN10226), BSPP (G, ISO228-1).
Threads are NOT interchangeable. Please confirm thread standard and size before placing order.
3、What stainless steel grades can you supply?
Standard grades:
– 304 / CF8 for water, air and general low-corrosion service
– 316 / 316L / CF8M for coastal, brine, chemical and chloride-containing media
Duplex, 321 and other special alloys available upon custom inquiry.
4、What standards and pressure rating?
Cast version follows ISO4144 / MSS SP-114, Class 150LB (PN16).
Forged bar machined version complies with ASME B16.11, available in 3000LB / 6000LB.
Pressure rating depends on material, wall thickness and production process.
5、Manufacturing process: casting or bar stock machined?
Standard stock items: lost wax investment casting.
High-pressure, high-precision requirement: solid bar CNC machined, higher cost.
7、Can you provide MTC material certificate?
Yes, EN10204 3.1 MTC with heat number is available. EN10204 3.2 third-party certificate can be arranged at buyer’s extra cost.
8、Surface finish options?
Standard: pickled matte finish.
9、Can you do laser marking?
Yes. We can mark size, grade, heat number, customer logo or brand on the flats.
10、Packaging for sea shipment?
Male threads are protected by plastic thread caps. Packed into export cartons, then loaded on fumigated wooden pallets with waterproof stretch film to avoid scratch and thread damage.
11、What is the lead time?
Typically, shipments are dispatched within 7–15 days of receiving the deposit, depending on the order quantity.
12、How is quality controlled?
Raw material inspection → CNC machining → Thread inspection → Hydrostatic testing → Visual inspection → Final dimensional verification before packaging.
13、Which Incoterms are available for overseas buyers?
We offer FOB (Free On Board) terms, with the shipment originating from a Chinese port. We will provide a commercial invoice, packing list, and bill of lading for import customs clearance.
14、Which Incoterms are available for buyers?
We offer FOB (Free On Board) or CIF (Cost, Insurance, and Freight) terms, with shipments originating from a Chinese port. We will provide a commercial invoice, packing list, and bill of lading for customs clearance.
15、What should be done if the threads are found to be defective or do not meet requirements upon arrival?
Please provide photos, videos, and inspection records. We will assess the root cause; depending on the contractual terms, solutions may include product replacement, a partial refund, or a reshipment.”
Reducing Threaded Tee
**304 Stainless Steel Reducing Threaded Tee, 150LB Reducing 3 Female Thread Tee, BSP/NPT Thread Available**
SS304 cast reducing tee with three female threaded ports of different sizes. It realizes flow branching and pipe diameter reduction in one fitting. Corrosion resistant for industrial threaded piping. MTC certificate available.
Type: Reducing Threaded Tee
Material: 304/316L stainless steel
Nominal diameter: 1/4”–4” (D8–DN100)
Rated pressure: 150LB
Connection type: Threaded connection (BSPT / BSPP / NPT)
