Ouman VD215-1.6
- Type: 2-way seat valve, linear characteristic
- DN + Kvs: DN 15, Kvs = 1.6 m³/h
- PN: 16 bar
- Δp range: up to 300 kPa max. close-off (with M31 actuators)
Applications
Ouman VD215-1.6 fits low-flow control points: an individual apartment with 5–15 kW radiator heating, a small AHU with a water coil, or a DHW primary branch with limited capacity. Used in substations, zonal control assemblies in building hydraulics and floor-heating mixing groups. Interfaces with Ouman A203 / C203 / EH-105 controllers via M31A150 (heating actuator) or M31C150 (heating actuator with spring-return). Delivery across the EU.
Technical specifications
| Parameter | Value |
|---|---|
| Code | OMA0390 |
| Model | Ouman VD215-1.6 |
| Type | 2-way seat control valve |
| Nominal diameter (DN) | DN 15 |
| Kvs | 1.6 m³/h |
| Nominal pressure (PN) | 16 bar |
| Connection | External thread G ¾" |
| Stroke | 15 mm (with Ouman M31 series actuators) |
| Valve characteristic | Linear |
| Media | Heating water, glycol solutions up to 50 % |
| Media temperature | +2 → +130 °C |
| Body material | Brass (DZR / CW602N) |
| Leakage class | IV per EN 60534-4 (leakage ≤ 0.01 % Kvs) |
| Compatible actuators | Ouman M31A150 (heating), M31C150 (heating w/ spring-return), M41A15 (DHW) |
Flow and capacity — quick calculation
Valve flow follows the standard formula: Q = Kvs × √Δp (Q — m³/h, Δp — bar across the valve).
Example: at Δp = 0.5 bar (50 kPa) — Q = 1.6 × √0.5 ≈ 1.13 m³/h. In heating mode (ΔT = 20 °C, cp = 4.18 kJ/kg·K) this corresponds to approximately P ≈ 26 kW.
At Δp = 1.0 bar (100 kPa) — Q = 1.6 m³/h → P ≈ 37 kW (ΔT = 20 °C).
Designer note
A control valve should carry no less than 25–50 % of the total system pressure drop (valve authority a = Δpvalve / Δpsystem). If the design Δp across the valve is below 20 kPa, the valve will control coarsely (low authority). Verify the hydraulic schematic before choosing DN. Kvs 1.6 suits small systems; for larger loads use VD220, VD225 or VD232.
When to choose VD215-1.6
- Individual apartment or small-zone radiator heating control (5–15 kW)
- DHW primary branch for low-flow consumers
- Underfloor-heating mixing group for one apartment (60–120 m²)
- Small AHU water coil (< 1000 m³/h airflow)
- Compatibility: Ouman M31A150 or M31C150 (3-point, 24 V AC), works with Ouman A203 / C203 / EH-105 controllers. Belimo LR24A-SR (0–10 V) can convert the valve to modulating control.
B2B delivery and logistics
- Delivery across the EU (from warehouse in Vilnius, LT)
- Competitive B2B pricing for projects and bulk orders
- 30-day payment terms for companies (per contract)
- Free technical consultation on valve sizing
Official Ouman catalog: ouman.fi/tuote/vd215
FAQ
Which actuator fits VD215-1.6?
Standard Ouman heating actuators: M31A150 (3-point, 150 N, no spring-return) or M31C150 (spring-return on power loss). For DHW — M41A15. Third-party alternatives: Belimo NV24, Siemens SAS/SAT, Honeywell M6410 range, provided force ≥ 150 N and stroke = 15 mm.
Is it suitable for potable water?
VD215-1.6 is not certified as a potable-water valve (DZR brass contains a small amount of lead). In DHW schematics the valve sits on the primary (heating) side, so it does not directly contact potable water. For direct potable-water applications choose WRAS/DVGW-certified valves.
What is the leakage class?
Class IV per EN 60534-4 — leakage in the closed position ≤ 0.01 % Kvs (i.e. ≤ 0.00016 m³/h at 1 bar Δp). Suitable for standard DHW and heating applications where minor leakage is acceptable.
Differences between VD215, VD220, VD225, VD232?
Only DN and Kvs differ: VD215 — DN 15 / Kvs 1.6; VD220 — DN 20 / Kvs 2.5 or 4.0; VD225 — DN 25 / Kvs 6.3; VD232 — DN 32 / Kvs 10. Construction, materials and compatible actuators are identical. Select by required design flow and valve authority.
