Danfoss PV controller upgrade part DN 20 — converts an installed USV-M manual measuring valve into a differential-pressure (PV) controller for automatic hydronic balancing, without replacing the valve body. Included impulse tube 1,5 m and threaded connector. OEM designation "PV controller upgrade part DN 20". OEM P/N 003Z2157. EAN 5702420082585. Technical data quoted verbatim from store.danfoss.com (code 003Z2157).
| Code number | 003Z2157 |
| Type | Automatic balancing accessories |
| Product group | Automatic balancing |
| Description | PV controller upgrade part DN 20 |
| Connection to valve | DN 20 |
| Usage | USV-M |
| Comments | Included impulse tube 1,5 m and threaded connector |
| Contains batteries | No |
| Net weight | 0.8 Kilogram |
| Gross weight | 0.82 Kilogram |
| Volume | 1.385 Liter |
| EAN | 5702420082585 |
| HS code | 8481.90 |
| Package depth [mm] | 145 mm |
| Package height [mm] | 91 mm |
| Package width [mm] | 105 mm |
| REACH Candidate List substances | No |
| Pressure rating | PN 16 |
| Standard size | PV upgrade part |
| MOQ | 1 |
Match the upgrade part to the connection size (DN 20) of the installed USV-M valve. Included impulse tube 1,5 m and threaded connector. Fits the USV-M measuring valve to add differential-pressure control on the branch. Confirm the host valve DN before ordering.