The MHI Series is manufactured to a tolerance. 227 Enterprise Pvt. Ltd. offers MHI Series VRF Refrigerant Branch Piping Kits for accurate installation, effective refrigerant distribution and reliable long term performance – the type of joint a consultant demands when the project really can’t afford a leak three floors up. Each kit has two intentionally enlarged copper Y joints. That is, they have thicker copper walls than a typical fitting, with a longer engagement zone at each brazed connection. That little additional length isn’t for looks, it means greater surface area for the braze to latch onto, which increases mechanical strength and offers refrigerant a smoother passage through the split, with significantly less internal turbulence where flow has to change direction. The multi-step setup then conducts the matching work, stepping down through the exact pipe sizes a project needs for, so alignment stays accurate and installation works faster without an adapter fitting bridging the gap.
All kits come with fire grade XLPE or Armaflex Class O NBR insulation – two separate systems, not an alternative with a different name. Fire-grade XLPE is preferred for its thermal retention and ability to resist combustion. Class O NBR gets the nod for its flexibility, moisture resistance and compliance with tough fire, smoke and toxicity ratings. So the choice depends on which safety and performance profile a particular project actually needs. Either choice keeps condensation off the copper — a joint that sweats is a joint already losing the case against corrosion — and keeps refrigerant temperature stable enough that the system is not quietly bleeding efficiency zone by zone. But none of this counts until the joint has been pressure tested: every MHI Series unit is hydro-tested at 5.2 MPa, or roughly 754 psi, well above normal operating levels, so a leak-free seal isn’t just a line on a spec sheet — it’s a number this Series has already been tested against, one joint at a time, for reliable, safe operation in demanding commercial and residential VRF installations.
| Model Number | Pipe | Pipe A (ID) | Pipe B (ID) | Pipe C (ID) | Reducers Number & Qty |
|---|---|---|---|---|---|
| Pi-DIS-22-1G | Gas Side | 12.7 (1/2) – 15.88 (5/8) – 19.05 (3/4) | 15.88 (5/8) – 12.7 (1/2) – 9.52 (3/8) | 15.88 (5/8) – 12.7 (1/2) – 9.52 (3/8) | 4 X 1 Nos, 5 X 1 Nos, 6 X 1 Nos |
| Liquid Side | 9.52 (3/8) | 9.52 (3/8) – 6.35 (1/4) | 9.52 (3/8) – 6.35 (1/4) | ||
| Pi-DIS-180-1G | Gas Side | 15.88 (5/8) 19.05 (3/4) – 22.22 (7/8) | 19.05 (3/4) – 15.88 (5/8) – 12.7 (1/2) – 9.52 (3/8) | 19.05 (3/4) – 15.88 (5/8) – 12.7 (1/2) – 9.52 (3/8) – 6.35 (1/4) | 7 X 1 Nos, 8 X 1 Nos, 9 X 1 Nos, 2 X 1 Nos, 3 X 1 Nos, 10 X 1 Nos |
| Liquid Side | 9.52 (3/8) – 12.7 (1/2) – 15.88 (5/8) | 12.7 (1/2) – 9.52 (3/8) – 6.35 (1/4) | 12.7 (1/2) – 9.52 (3/8) – 6.35 (1/4) | ||
| Pi-DIS-371-1G | Gas Side | 25.4 (1) 28.58 (1-1/8) – 31.75 (1-1/4) | 25.4 (1) – 22.22 (7/8) – 19.05 (3/4) | 25.4 (1) – 22.22 (7/8) – 19.05 (3/4) | 1 X 1 Nos, 11 X 1 Nos, 10 X 1 Nos, 8 X 1 Nos, 7 X 2 Nos, 9 X 1 Nos |
| Liquid Side | 12.7 (1/2) – 15.88 (5/8) | 15.88 (5/8) 12.7 (1/2) – 9.52 (3/8) – 6.35 (1/4) | 15.88 (5/8) 12.7 (1/2) – 9.52 (3/8) – 6.35 (1/4) | ||
| Pi-DIS-540-2G | Gas Side | 28.58 (1-1/8) – 31.75 (1-1/4) – 38.1 (1-1/2) | 31.75 (1-1/4) – 28.58 (1-1/8) – 25.4 (1) 19.05 (3/4) | 31.75 (1-1/4) – 28.58 (1-1/8) – 25.4 (1) 19.05 (3/4) | 12 X 1 Nos |
| Liquid Side | 12.7 (1/2) – 15.88 (5/8) – 19.05 (3/4) – 22.22 (7/8) | 19.05 (3/4) 15.88 (5/8) – 12.7 (1/2) – 9.52 (3/8) | 19.05 (3/4) – 15.88 (5/8) – 12.7 (1/2) – 9.52 (3/8) | ||
| Pi-DOS-2A-1G | Gas Side | 31.75 (1-1/4) – 38.1 (1-1/2) | 28.58 (1-1/8) – 25.4 (1) | 28.58 (1-1/8) – 25.4 (1) | |
| Liquid Side | 15.88 (5/8) – 19.05 (3/4) – 22.22 (7/8) | 12.7 (1/2) | 12.7 (1/2) |
| 1 | 34.92 (1-3/8) ID X 38.1 (1-1/2) OD | 7 | 22.22 (7/8) ID X 25.4 (1) OD |
| 2 | 34.92 (1-3/8) ID X 31.75 (1-1/4) OD | 8 | 12.7 (1/2) ID X 19.05 (3/4) OD |
| 3 | 28.58 (1-1/8) ID X 25.4 (1) OD | 9 | 9.52 (3/8) ID X 19.05 (3/4) OD |
| 4 | 25.4 (1) ID X 22.22 (7/8) OD | 10 | 15.88 (5/8) ID X 19.05 (3/4) OD |
| 5 | 28.58 (1-1/8) ID X 22.22 (7/8) OD | 11 | 25.4 (1) ID X 28.58 (1 1/8) OD |
| 6 | 22.22 (7/8) ID X 19.05 (3/4) OD | 12 | 6.35 (1/4) ID X 9.52 (3/8) OD |
MHI Series joints are manufactured from heavier gauge copper and have longer engagement zones – an intentional design feature that gives more strength, durability and a smoother refrigerant flow channel than typical fittings are satisfied with. The same logic that applies to everything else about the Series: available in premium Fire-Grade XLPE or Class O NBR insulation to suit diverse project requirements, built to a universal design that drops into major OEM pipe-size conventions, and backed by 100% pressure testing at 5.2 MPa rather than a spot-checked sample. That combo takes away the uncertainty a contractor normally would have to bring to installation and eliminates the chance of leaks before the system is ever turned on. 227 Enterprise is a manufacturer, not a reseller re-labeling generic parts. We design, engineer and manufacture the MHI Series in-house, according to CE, RoHS and AS 4041 pressure-piping standards along the way. Which means a proven, reliable solution for consultants and contractors working on complex VRF systems, and one less thing to worry about on-site.
VRF Y Branch for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
Refrigerant Branch Piping Kits for VRV / VRF Systems Operating with R410 Refrigerant.
VRF Tee Joints for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
VRF Branch Pipe Kits for Reliable Refrigerant Distribution in VRF Systems
Refrigerant Branch Piping Kits for VRF Systems Operating with R410 Refrigerant
VRF Y Branch Refrigerant Distribution Kits for VRV / VRF Systems Operating with R410.
VRF Refrigerant Branch Piping Kits for VRF Air Conditioning Systems Compatible with R410A Refrigerant.
VRF Branch Pipe Kits for Reliable Refrigerant Distribution in VRF Systems.
VRF Y Branch Kits Engineered for R410 HVAC Applications.
VRF Refrigerant Branch Piping Kit for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
VRF Y Branch for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
VRF Y Joints for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
VRF Refrigerant Branch Piping Kit for VRF Air Conditioning Systems Compatible with R410 Refrigerant
VRF Y Branch for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
VRF Y Joints for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
VRF Y Branch for VRF Air Conditioning Systems Compatible with R410 Refrigerant.
Engineered for high-performance R410a and next-generation-ready VRF ecosystems
Precision Manufactured VRF Y Joints for Optimal Refrigerant Flow and Efficient System Performance.
Manufactured for Optimal Refrigerant Flow Distribution in VRF Systems Working on R410 Refrigerant.