PRODUCT FEATURES
Threaded Tee — Product Features
Water treatment, plumbing systems, machinery piping, food & beverage, light chemical, heating & cooling circuits, pump and valve manifolds, process pipelines for flow splitting & merging.
Product Feature
Buyer Notes
Product Feature
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 size before order to prevent fitting mismatch on site.
OPERATING PRINCIPLE
How Threaded Tee Works
1. **Equal-Diameter Threaded Tee Design**: Features three female threaded ports of the same nominal diameter, forming a 90° branch for fluid distribution or convergence.
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2. **Precision-Cast Construction**
Robust wall thickness with a dense, uniform metallurgical structure—free from porosity or sand holes—ensuring stable pressure-bearing performance.
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3. **AISI 304 Stainless Steel**
Offers excellent rust and corrosion resistance; suitable for use with fresh water, mildly corrosive media, and outdoor installations.
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4. **Precision-Machined Threads**
Available with NPT, BSPT, or BSPP thread types. Thread tolerances comply with ISO 7-1, DIN 2999, or ANSI B1.20.1 standards, ensuring leak-free connections.
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5. **150LB Pressure Rating**
Compliant with the ISO 4144 standard, suitable for general industrial piping systems.
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6. **Pickled and Passivated Surface**
Provides a uniform metal surface finish that further enhances corrosion resistance; supports custom marking or engraving on the fitting body.
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7. **Comprehensive Size Range**
Available in sizes from 1/4″ to 4″ (DN8 to DN100), with support for OEM branding and customization.
ENGINEERING DATA
Technical Specifications
Technical data supplied for Threaded Tee. Ratings and material combinations should be confirmed for the selected configuration.
| PARAMETER | SPECIFICATION |
|---|---|
| – Material | AISI 304 (1.4301 / ASTM A182 F304) |
| – Type | Threaded Tee, Equal Female Thread Tee (3F 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
| SIZE | φ1 | φ2 | C | A |
|---|---|---|---|---|
| 1/4 | 17 | 11 | 6 | 19 |
| 3/8 | 22 | 15 | 7 | 22 |
| 1/2 | 26 | 19 | 7 | 26 |
| 3/4 | 32 | 24 | 7 | 32 |
| 1 | 39 | 30 | 8 | 36 |
| 1-1/4 | 48 | 39 | 9 | 41 |
| 1-1/2 | 55 | 45 | 10 | 47 |
| 2 | 66 | 57 | 11 | 56 |
| 2-1/2 | 83 | 73 | 12 | 67 |
| 3″ | 96 | 85 | 15 | 77 |
| 4 | 125 | 110 | 16 | 91 |
Refer to the supplied dimension chart.
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 Threaded Tee (FFF Equal Tee)?
It is a T-shaped 3-way threaded pipe fitting with **female internal threads on all three ports**, normally equal size. It is used to split, combine or divert fluid flow in pipeline systems.
Important distinction: This FFF tee differs from MFF tee. MFF tee has one male thread and two female threads, they cannot be interchanged. We also supply reducing threaded tee on request.
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.
Threaded Tee
304 Stainless Steel Threaded Tee, 150LB Equal 3 Female Thread Tee, BSP/NPT Thread Available SS304 cast equal tee with three female threaded ends, 3-way fitting for flow split and combination. Ideal for industrial threaded piping systems. Corrosion resistant. MTC certificate available.
Type: Threaded Tee
Material: 304/316L stainless steel
Nominal diameter: 1/4”–4” (D8–DN100)
Rated pressure: 150LB
Connection type: Threaded connection (BSPT / BSPP / NPT)
