Danfoss AVPL (balancing valves), OEM order code 003L3640. Self-acting differential-pressure controller mounted in the return that holds a constant differential pressure across a heating or cooling circuit. Manufacturer description: AVPL PN16 15/2,5 0,05-0,25 ext. thr ret. connection/size DN 15, Kvs 2.5 m³/h, PN 16; max. differential pressure 4.5 bar, media/setting temperature 2 °C to 120 °C, body material DZR brass CuZn36Pb2AS (CW 602N). EAN 5714279007152. HS 8481.80. Specifications quoted verbatim from store.danfoss.com (code 003L3640).
| Brand | Danfoss |
| Part number | 003L3640 |
| Code number | 003L3640 |
| Type | AVPL |
| Product group | Pressure flow controllers |
| Description | AVPL PN16 15/2,5 0,05-0,25 ext. thr ret |
| Gross weight | 0.673 Kilogram |
| Net weight | 0.621 Kilogram |
| Actuator diaphragm material | EPDM |
| Application | Heating and cooling |
| Cavitation factor | 0.5 |
| Connection size | G 3/4 A |
| Connection types | External Thread |
| Diameter [mm] | 15 mm |
| Differential pressure range [bar] [Max] | 4.5 bar |
| Differential pressure setting [bar] [Max] | 0.25 bar |
| Differential pressure setting [bar] [Min] | 0.05 bar |
| Flow control | No |
| Flow limitation | No |
| Function | Diff. press. controller |
| Function VSP - P | Yes |
| Function VSP - Q | No |
| Function VSP - T | No |
| Kvs values [m³/h] | 2.5 m³/h |
| Media pH [Max] | 10 |
| Media pH [Min] | 7 |
| Media temperature [°C] [Max] | 120 °C |
| Media temperature [°C] [Min] | 2 °C |
| Medium alternative | Glycolic water up to 30% |
| Mounting version | Return |
| Permissible media | District heating/cooling circulation water |
| PN alternative VSP | 10 |
| Pressure class | PN 16 |
| Pressure controller | Differential pressure controller |
| Pressure nominal [bar] | 16 bar |
| Setting Type | Adjustable |
| Stem position | Normally open |
| Valve body material | DZR brass CuZn36Pb2AS (CW 602N) |
| Valve cone DP material | Stainless steel |
| Valve seat material | Stainless steel |
| Valve size | DN 15 |
| EAN | 5714279007152 |
| HS code | 8481.80 (taps, cocks, valves for pipes) |
| Material | DZR brass CuZn36Pb2AS (CW 602N) |
| Pressure rating | PN 16; max. differential pressure 4.5 bar |
| Temperature range | 2 °C to 120 °C |
| Standard size | DN 15 |
| MOQ | 1 |
Genuine Danfoss part, order code 003L3640 (Pressure flow controllers). Confirm the code, size (DN 15) and matching valve/actuator family against your Danfoss datasheet before ordering.