Danfoss ETS 8M45L stepper-motor electric expansion valve, code 034G8804. Copper-body in-line valve with 3/8 in (9.5 mm) Solder ODM copper inlet and outlet, 4.5 mm orifice and a Linear flow characteristic, bi-flow. Permanent-magnet stepper (1-2 half-step excitation, 500 half-steps) gives precise refrigerant expansion and flow control for modular chillers, single-package air conditioners and low-ambient heat pumps. Rated 81.2 kW / 23 TR on R410A. MWP 49 bar (711 psig); MOPD 39 bar forward / 32 bar reverse. Refrigerant and ambient -30 to 70 °C. Driven by a compatible Danfoss (or third-party) electronic controller, ordered separately. OEM P/N 034G8804.
| Type | Electric expansion valve, ETS 8M45L (ETS 8M M-series) |
| Code number | 034G8804 |
| Function | stepper-motor driven electric expansion valve for precise refrigerant expansion and flow control |
| Inlet connection | 3/8 in (9.5 mm), Solder ODM, copper |
| Outlet connection | 3/8 in (9.5 mm), Solder ODM, copper |
| Orifice | 4.5 mm |
| Flow characteristic | Linear |
| Flow direction | bi-flow (single/bi-flow operation) |
| Rated capacity (R410A) | 81.2 kW / 23 TR |
| Max. working pressure (PS/MWP) | 49 bar (711 psig) |
| MOPD (max. operating pressure differential) | 39 bar (566 psig) forward, 32 bar (497 psi) reverse |
| Refrigerant temperature range | -30 to 70 °C (-22 to 158 °F) |
| Ambient temperature range | -30 to 70 °C (-22 to 158 °F) |
| Body / connection material | Copper |
| Motor | permanent-magnet stepper motor; 1-2 excitation (half step); 500 half-steps full travel |
| Compatible lubricants | POE, PVE |
| Compatible refrigerants | R1234ze(E), R134a, R290, R32, R404A, R407C, R410A, R448A, R449A, R449B, R452A, R452B, R454B, R454C, R513A, R515B |
| Control | system product; driven by a compatible Danfoss electronic controller (or a compatible third-party controller) — valve does not operate stand-alone |
| Net weight | 0.146 kg (gross 0.213 kg) |
| Approvals | UL Recognized (cURus); EU RoHS; China RoHS; PED 2014/68/EU Article 4 paragraph 3 |
| EAN | 5702424595173 |
| Material | Copper |
| Pressure rating | 49 bar (711 psig) MWP; MOPD 39 bar fwd / 32 bar rev |
| Temperature range | -30 to 70 °C refrigerant and ambient |
| Standard size | 3/8 in (9.5 mm) ODM |
| Thread standard | Solder ODM |
| MOQ | 1 |
ETS 8M is a stepper valve — it does not operate stand-alone. Drive it with a compatible Danfoss electronic controller (or a compatible third-party controller). Confirm orifice / flow characteristic (L = linear, S = S-shape), connection size and refrigerant before ordering. Linear (L) and S-shape (S) variants share body and connection but differ in the flow-vs-opening curve used for controller tuning.