Ouman VD232-10
- Type: 2-way seat valve, linear characteristic
- DN + Kvs: DN 32, Kvs = 10 m³/h
- PN: 16 bar
- Δp range: up to 300 kPa max. close-off
Applications
Ouman VD232-10 is the largest threaded VD-series variant. Used on: primary valves in 150–250 kW multi-family substations, main control point in commercial or administrative building heating groups, main valve in gas or biomass boiler rooms, DHW primary branches for hotels and schools with higher demand. Interfaces with Ouman A203 / C203 / EH-105 / S203 controllers via M31A150 or M31C150 3-point actuator. Delivery across the EU.
Technical specifications
| Parameter | Value |
|---|---|
| Code | OMA0394 |
| Model | Ouman VD232-10 |
| Type | 2-way seat control valve |
| Nominal diameter (DN) | DN 32 |
| Kvs | 10 m³/h |
| Nominal pressure (PN) | 16 bar |
| Connection | External thread G 1½" |
| Stroke | 15 mm |
| 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 (≤ 0.01 % Kvs) |
| Compatible actuators | Ouman M31A150, M31C150, M41A15 |
Flow and capacity — quick calculation
Formula: Q = Kvs × √Δp (Q — m³/h, Δp — bar).
Example: at Δp = 0.25 bar — Q = 5.0 m³/h → P ≈ 116 kW (ΔT = 20 °C). At Δp = 0.5 bar — Q ≈ 7.07 m³/h → P ≈ 164 kW. At Δp = 1.0 bar — Q = 10 m³/h → P ≈ 232 kW.
Designer note
VD232-10 is the largest threaded VD variant. Higher capacity (> 250 kW) points require a flanged DN 40+ valve (Danfoss VF/VFS or Siemens VVF). When the network Δp fluctuates and flow stabilisation is required, a PICV (Belimo Energy Valve, IMI TA-COMPACT-P, Danfoss AB-QM) is the better choice.
When to choose VD232-10
- Larger-capacity (150–250 kW) multi-family substation primary valve
- Main valve on a commercial-building heating group
- Main control point on a gas or biomass boiler room
- Hotel or school DHW primary valve for higher load
- Compatibility: Ouman M31A150 / M31C150; controllers Ouman A203 / C203 / EH-105 / S203. Modulating 0–10 V — Belimo NVK24A-MP or Siemens SAS81.03.
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/vd232
FAQ
When is DN 32 enough, and when do I need a flanged DN 40+ valve?
DN 32 with Kvs 10 handles up to ~250 kW (Δp = 1 bar, ΔT = 20 °C). Above 250 kW — or pipe velocity above 2 m/s — step up to flanged valves (Danfoss VF DN 40/50, Siemens VVF52/54, Belimo H6…).
Is it suitable for a PN 25 system?
No. VD232-10 is rated PN 16. Systems with working pressure above 16 bar require flanged PN 25 valves (Danfoss VF25 or Siemens VVF PN 25).
Is it used together with PICV?
No. VD232-10 is a classical seat control valve — it needs a separate differential pressure controller or balancing valve when network Δp is variable. When integrated Δp stabilisation is required, choose a PICV (Belimo Energy Valve, IMI TA-COMPACT-P, Danfoss AB-QM).
What is the leakage class?
Class IV per EN 60534-4 — closed-position leakage ≤ 0.01 % Kvs.
