Danfoss AF-range stem extension ZF 4, FKM (OEM designation "Stem extension ZF 4, FKM, AF range"). The stem extension is a spacer piece fitted between the valve body and the self-acting AF-range actuator, giving clearance for pipe insulation and separating the actuator from the hot valve body. This variant uses FKM seals for elevated media temperature. Suits valve bodies DN 15–125, PN 16. OEM P/N 003G1395. EAN 5702421812457. Technical data quoted verbatim from store.danfoss.com (code 003G1395).
| Code number | 003G1395 |
| Type | Stem extensions |
| Product group | Accessories - SAC |
| Gross weight | 2.794 Kilogram |
| Net weight | 2.794 Kilogram |
| Volume | 5.029 Liter |
| Contains batteries | No |
| Description | Stem extension ZF 4, FKM, AF range |
| For valve size | DN 15-125 |
| Pressure nominal [bar] | 16 bar |
| REACH Candidate List substances | Lead (CAS no. 7439-92-1) |
| Suitable for valve of diameter [mm] [Max] | 125 mm |
| Suitable for valve of diameter [mm] [Min] | 15 mm |
| EAN | 5702421812457 |
| HS code | 8481.90 |
| Pressure rating | PN 16 |
| Standard size | Stem extensions |
| MOQ | 1 |
Stem extension ZF 4 fits between a Danfoss VFG-series globe valve body (DN 15–125) and the AF-range actuator to allow insulation clearance. ZF 4/5/6 differ in build height; the FKM variant is for higher media temperature. Confirm the required extension height and seal material against the AF-range data sheet before ordering.