Danfoss PV controller upgrade part DN 25 — 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 25". OEM P/N 003Z2158. EAN 5702420082608. Technical data quoted verbatim from store.danfoss.com (code 003Z2158).
| Code number | 003Z2158 |
| Type | Automatic balancing accessories |
| Product group | Automatic balancing |
| Description | PV controller upgrade part DN 25 |
| Connection to valve | DN 25 |
| Usage | USV-M |
| Comments | Included impulse tube 1,5 m and threaded connector |
| Contains batteries | No |
| REACH Candidate List substances | Lead (CAS no. 7439-92-1) |
| Net weight | 1.518 Kilogram |
| Gross weight | 1.518 Kilogram |
| Volume | 3.496 Liter |
| EAN | 5702420082608 |
| HS code | 8481.90 |
| Package depth [mm] | 190 mm |
| Package height [mm] | 115 mm |
| Package width [mm] | 160 mm |
| Pressure rating | PN 16 |
| Standard size | PV upgrade part |
| MOQ | 1 |
Match the upgrade part to the connection size (DN 25) 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.