PRODUCT FEATURES
2F1M 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 2F1M Threaded Tee Works
1. 2F1M Tee Configuration: Features two female threaded ports and one male threaded port, allowing for the splitting or merging of fluid flow in three directions with flexible installation options.
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2. Precision Casting Process
Ensures robust, thick-walled construction with minimal porosity and stable pressure resistance.
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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 in outdoor environments.
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4. Precision-Machined Threads
Available with NPT, BSPT, or BSPP thread types; compliant with ISO 7-1, DIN 2999, or ANSI B1.20.1 standards to ensure leak-free connections.
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5. 150LB Pressure Rating
Complies with the ISO 4144 standard, making it suitable for general industrial piping systems.
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6. Pickled and Passivated Finish
Provides a uniform metallic surface appearance and 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 1/2″ to 1″ (DN15 to DN25), with support for OEM branding/custom marking.
ENGINEERING DATA
Technical Specifications
Technical data supplied for 2F1M Threaded Tee. Ratings and material combinations should be confirmed for the selected configuration.
| PARAMETER | SPECIFICATION |
|---|---|
| – Material | AISI 304 (1.4301 / ASTM A182 F304) |
| – Type | 2F1M Threaded Tee (2 female threads × 1 male thread) |
| – Thread Standard | NPT (ANSI B1.20.1) / BSPT / BSPP (ISO 7/1, DIN 2999) |
| – Pressure Rating | 150LB |
| – Standard | ISO 4144 |
| – Surface Treatment | Pickled and Passivated |
| – Operating Temperature | -20°C to +200°C |
MECHANICAL DIMENSIONS
Dimensions & drawings.
Compare connection size with the corresponding overall length, bore and handle clearance dimensions from the supplied drawing.

Dimension chart
| SIZE | L1 | L2 | L3 | L5 | L6 | H |
|---|---|---|---|---|---|---|
| 1/2 | 16 | 16 | 20 | 26 | 26 | 47 |
| 3/4 | 18 | 18 | 21 | 31 | 31 | 53 |
| 1 | 21 | 21 | 25 | 37 | 37 | 65 |
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 MFF Tee?
It is a 3-way T-shaped threaded pipe fitting. It has **one male external thread on the top branch and two female internal threads on the run ends**. It is used to split or combine pipeline flow.
Important note: Different from FFF equal tee (all female threads). MFF tee cannot be interchanged with equal female tee.
2、What thread standards are available?
We support NPT (ASME B1.20.1), BSPT (R/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
4、What standards and pressure rating?
Cast version follows ISO4144 / MSS SP-114, Class 150LB (PN16).
5、anufacturing process: casting or bar stock machined?
Standard stock items: lost wax investment casting.
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.”
F/M/F Threaded Tee
304 Stainless Steel 2F1M Threaded Tee, 150LB Two Female One Male Thread Tee, BSP/NPT Thread Available
SS304 cast tee with two female threads and one male thread, 3-way fitting for flow split & combination. Mixed thread design simplifies piping assembly. Corrosion resistant for industrial threaded piping. MTC certificate available.
Type: 2F1M Threaded Tee
Material: 304/316L stainless steel
Nominal diameter: 1/2”–1” (D15–DN25)
Rated pressure: 150LB
Connection type: Threaded connection (BSPT / BSPP / NPT)














