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The Robot Tee is a custom connector designed to integrate the BOOKOO EM Pressure Sensor with your Cafelat Robot Barista. It threads directly into the machine’s original bleed valve port, allowing your original mechanical gauge and the EM Pressure Sensor to work side-by-side.

Built for manual extraction, it provides a perfect fit that stays solid and completely leak-free when you push down on the levers. It requires no machine modification, keeping your setup stable, secure, and data-driven right out of the box.

Combine it with a BOOKOO Themis smart scale to track pressure, weight, flow rate, and brew ratio live, bringing a fully connected brewing experience to your Robot.

Installation Guide On Cafelat Robot

This video shows how to install the BOOKOO EM Kit on your Cafelat Robot and connect it with the Espresso Monitor pressure sensor. It covers the splitter setup, mechanical gauge connection, and real-time pressure display during extraction.

What's is the Box

Here are all the items included when you purchase the Tee&Gauge.

Robot & Mechanical Gauge
Robot & Mechanical Gauge
Mini Spanner & Allen Wrench
Mini Spanner & Allen Wrench

Specifications & Compatibility Guide

BOOKOO E61 Tee&Gauge With E61 group heads (M6 thread) BOOKOO
Sale price$49.00 USDRegular price $59.00 USD
Cafelat Robot Tee & Gauge BOOKOO
Sale price$33.32 USDRegular price $39.00 USD
M9 Tee & Gauge(For Flair Pro2) BOOKOO
Sale price$33.32 USDRegular price $39.00 USD
G1/8 FFM Tee & Gauge(For Flair58) BOOKOO
Sale price$33.32 USDRegular price $39.00 USD
Compatible Models

E61 grouphead espresso machines
(e.g., Rocket Appartamento HX, etc.)

Cafelat Robot manual lever espresso makers

Flair Pro 2 & other M9-port models

Flair 58 (all variants) & Flair 49 Pro
& Flair 2Go

Machine-End Thread(Thread OD )

M6×1.0(E61 OEM Standard)
( 6mm )

M5×1.0(Robot OEM Bleed Port Standard)
( 5mm )

M9(Flair Piston Port Standard)
( 9.72mm )

G1/8 female thread (Universal)
( 9mm )

Sensor / Gauge Port

Dual G1/8 female ports

Dual G1/8 female ports

Dual G1/8 female ports

Dual G1/8 female ports

Tee Weight

~175g

~75g

~38g

~38g

Mechanical Gauge Weight

~55g

~55g

~55g

~55g

Operating Pressure (Recommended)

0–12 bar

0–12 bar

0–12 bar

0–12 bar

Tee Material

304 Stainless Steel

304 Stainless Steel

304 Stainless Steel

304 Stainless Steel

Installation Method

100% Reversible.
Replaces OEM M6 plug;
no machine modification required.

100% Reversible.
Replaces OEM bleed port screw;
no machine modification required.

100% Reversible.
Replaces OEM piston rod;
no machine modification required.

100% Reversible.
Replaces OEM piston rod;
no machine modification required.

BOOKOO Product Integration

BOOKOO EM Pressure Sensor
/Real-Time App Curve Monitoring

BOOKOO EM Pressure Sensor
/Real-Time App Curve Monitoring

BOOKOO EM Pressure Sensor
/Real-Time App Curve Monitoring

BOOKOO EM Pressure Sensor
/Real-Time App Curve Monitoring

What's in the box(TBC)

E61 Tee, Mechanical Gauge,
Installation Tools

Robot Dedicated Tee, Mechanical Gauge,Installation Tools

M9 Tee, Mechanical Gauge

G1/8 Tee, Mechanical Gauge

FAQs

Can I purchase the BOOKOO Tee separately without the pressure gauge?
  • Currently, our website does not support purchasing the Tee separately. BOOKOO Tees are designed to be sold as a fixed kit with the pressure gauge. 
  • Due to threading compatibility, using the Tee with other coffee machines or third-party pressure gauges is not feasible. 
  • For further questions or assistance, please feel free to contact us.
Can I use the BK Tee or pressure gauge separately?
  • Yes, but compatibility depends on your setup. Please make sure the thread size matches, the O-rings or seals are installed correctly, and any unused ports are properly sealed to prevent leaks.
  • For safe setup details, please refer to this guide.
Can the BOOKOO Tee be used with non-BOOKOO pressure sensors?
  • Yes, but only if the thread size matches. Third-party pressure sensors are not guaranteed to be compatible with the BOOKOO Tee.
  • If you plan to use the BOOKOO Tee with a non-BOOKOO pressure sensor,
    please follow the details carefully.
How do I install and adapt the BK Tee?
  • Install the EM on the short side of the BK Tee marked “BK”.
  • Before tightening, make sure the Tee is fully seated and the O-ring is correctly positioned.
  • Do not remove the red O-rings, as they help seal the connection and prevent leaks.
  • For compatibility, confirm the thread type of your machine or adapter, such as M6, M9, or G1/8.
  • For detailed installation videos and compatibility guidance, please refer to the official guide.
What should I do if there is water leakage at the Tee connection?
  • If water leaks from the Tee connection, stop using it first and check whether the Tee is fully seated, the O-ring is correctly positioned, and the red O-rings are still in place. Re-tighten gently, but do not over-tighten.
  • If leakage continues, you can learn more about the sealing steps here.
How to fix a tilted pressure gauge after installation?
  • A tilted gauge is usually caused by normal thread tolerance. Slightly loosen the gauge connection on the Tee, rotate the gauge until the 0-mark faces forward and looks level, then run a blind basket test to check for leaks.
  • If minor leakage appears, apply PTFE tape to the threads and test again.
  • For full adjustment steps, please follow the details.