Flamco T-Plus DN25 rapid installation tee for steel pipes, Rp 3/4" branch, PN 25
- Application: DN20 branch on a DN25 steel pipe
- Pipe outer Ø: 33.7 mm (1")
- Branch connection: Rp 3/4" (female thread, DN20)
- Nominal pressure / T: PN 25 / +120 °C
Where T-Plus DN25 is used
DN25 is typically chosen for apartment heating branches in multi-family buildings and for feeding small underfloor heating manifolds. When a DN25 main riser needs to be tapped into — for example, to install a separate metering unit (energy meter) for an apartment or to connect an additional underfloor heating loop — the T-Plus allows this without shutting down the whole riser.
The 16 Nm tightening torque is achievable with a standard torque wrench. The joint withstands classic district heating pressure and temperature, so it works on both flow and return lines. Installation time about 5-7 minutes, no drain-down and refill cycle.
Technical specifications
| Parameter | Value |
|---|---|
| Code | 90626 |
| Series | Flamco T-Plus, cast iron version |
| Model | T-Plus DN25 x Rp 3/4" |
| Pipe nominal DN | DN25 (1") |
| Pipe outer Ø | 33.7 mm |
| Branch connection | Rp 3/4" (BSP female thread, DN20) |
| Housing material | Cast iron with anti-corrosion coating |
| Seal | EPDM with single-use cutting element |
| Max working pressure | PN 25 (25 bar) |
| Max working T | +120 °C |
| Permissible pipe wall thickness | ≤ 2.0 mm |
| Tightening torque | 16 Nm |
| Pipe standards | DIN EN 10255 (Series M/H), DIN EN 10216, DIN EN 10217 |
| Media | Heating water, chilled water, potable water, solar, compressed air |
| Installation | Clamp-on with system in operation, no welding, no threading |
When to choose T-Plus DN25
- Apartment heating branch on a DN25 riser in multi-family buildings
- Individual metering unit (energy meter) installation without riser shutdown
- Small underfloor heating manifold feed branching
- Compatibility: steel pipes per DIN EN 10255 M/H, DIN EN 10216, DIN EN 10217 with wall thickness ≤ 2.0 mm
B2B delivery and logistics via Amegata.lt
- 24-hour delivery across Lithuania (from our warehouse in Vilnius)
- Competitive B2B pricing — often below market average
- 30-day payment terms for companies (per contract)
- Free technical consultation on pipe compatibility
Official Flamco catalogue: flamco.aalberts-hfc.com/T-plus 90626
Frequently asked questions
Is a special tool required for T-Plus installation?
No. A torque wrench (16 Nm) and free access to the pipe (~150 mm around the clamp point) is enough. No drilling, welding or threading equipment needed — the cutting element pierces the pipe as the bolts are tightened.
Can it be used with an energy meter (metering unit)?
Yes. The T-Plus DN25 is commonly used for apartment metering unit installation — the Rp 3/4" branch allows a ball valve, strainer and DN20 or DN15 heat meter to be connected downstream. Confirm meter inlet/outlet sizes with the meter supplier before installation.
How to prepare the pipe before installation?
The pipe surface at the clamp point must be clean (no paint, rust scale or insulation). Verify the wall thickness ≤ 2.0 mm. Thicker walls (heavy-series steel pipes) are not compatible with T-Plus.
Can it be used in chilled water (chiller) systems?
Yes, the manufacturer confirms cooling system use. For long-term operation with condensation forming — make sure the housing and clamp point are insulated from ambient air to prevent local corrosion.
