In detail
What it is made of
How it works
Normally closed solenoid valve
Direct-acting solenoid inset
The number that matters
Nominal pressure
10bar
The pressure class of the valve body at 20 °C. Working limits depend on the medium and its temperature.
Construction
Parts and materials
Applications
Media and industries
- Water
- Steam
- High-Temperature Liquid
- Chemical Industry
- Steam Supply
- Industry
- Food Industry
- Hot/Cold Water Supply
In a normally closed solenoid valve, the closed position is maintained if no control voltage is applied to the solenoid coil. When voltage is applied to the coil, the normally closed valve opens and allows the medium flow to pass through. When the control voltage is switched off, the valve closes automatically and cuts off the flow of medium in the pipeline. Solenoid valves are used in automobiles, special equipment, water supply systems and auto irrigation and heating systems. They are also widely used in industry to regulate and control the transportation of a variety of liquids and gases.
General technical specifications DNOVA VS731-PT-NC-24VAC solenoid valves, body material - stainless steel AISI 304, seal - PTFE, normally closed, coil - 24 VAC:
| Parameter | Value |
|---|---|
| Nominal diameter DN, mm (inch) | 15–50 (1/2”–2”) |
| Nominal pressure PN, bar | for 220VAC DN15–50 – 10for 24VDC DN15–25 – 6for 24VDC DN32–50 – 5 |
| Minimum pressure, bar | 0 |
| Max. working medium temperature, °C | +180 |
| Ambient temperature, °C | from -20 to +65 |
| Working medium | steam, hot water, high-temperature liquid |
| Operating principle | zero differential pressure |
| Device type | normally closed |
| Pipe connection | threaded |
| Thread type | G |
| Coil power supply | AC220V or DC24V |
| Body material | brass or stainless steel AISI 304 |
| Seal | PTFE |
| Protection rating | IP65 |
| Coil insulation class | F |
| Coil design | Ø 2.5–4 mm: with DIN standard connectors (fully encapsulated)Ø 15–50 mm: with lead wires (fully encapsulated) |
| Average service life (open/close cycles) | 200,000 |
| Average lifespan, years | 5 (under non-aggressive media and average pressure and temperature conditions) |
Solenoid valves VS731-PT-NC-24VAC, body material - Stainless steel AISI 304, seal - PTFE, normally closed, coil - 24 VAC
Dimensions and dimensions of DNOVA VS700-PT-NC-24VAC solenoid valves, body material - brass, seal - PTFE, normally closed, coil - 24 VAC:
| DN | A | B | C | D | Weight, kg | |
| mm | brass | stell | ||||
| 15 | 67 | 56 | 122 | 107 | 0.8 | 0.8 |
| 20 | 80 | 60 | 140 | 123 | 1 0 | 1.0 |
| 25 | 92 | 72 | 151 | 129 | 1.5 | 1.4 |
| 32 | 96 | 75 | 175 | 149 | 2.1 | 1.9 |
| 40 | 118 | 93 | 183 | 153 | 2.7 | 2.6 |
| 50 | 150 | 116 | 202 | 167 | 4.5 | 4.1 |
Dimensional sketch of solenoid valves VS731-PT-NC-24VAC, body material - Stainless steel AISI 304, seal - PTFE, normally closed, coil - 24 VAC
Detail of solenoid valves DNOVA VS731-PT-NC-24VAC, body material - Stainless steel AISI 304, seal - PTFE, normally closed, coil - 24 VAC
| No. | Part Name | Material |
|---|---|---|
| 1 | Valve body | brass or stainless steel AISI 304 |
| 2 | Body O-ring | PTFE |
| 3 | Piston assembly | stainless steel AISI 304 |
| 4 | Elastic ring | stainless steel AISI 304 |
| 5 | Piston ring | PTFE-filled |
| 6 | Spring | stainless steel AISI 304 |
| 7 | Plunger | stainless steel AISI 304 |
| 8 | Guide sleeve | PTFE-filled |
| 9 | Valve cap | brass or stainless steel AISI 304 |
| 10 | Screw | stainless steel AISI 304 |
| 11 | Gasket | stainless steel AISI 304 |
| 12 | Seal | PTFE |
| 13 | Metal washer | stainless steel AISI 304 |
| 14 | Plastic washer | – |
| 15 | Plunger tube | stainless steel AISI 304 |
| 16 | Coil | – |
| 17 | Washer | stainless steel SS 201 |
| 18 | Nameplate | aluminum alloy Ly12 |
| 19 | Gasket | stainless steel AISI 304 |
| 20 | Locknut M10 × 1 | stainless steel SS 201 |
Sketch of solenoid valve DNOVA VS731-PT-NC-24VAC, body material - Stainless steel AISI 304, seal - PTFE, normally closed, coil - 24 VAC
Main operating parameters DHP21-S-NC SS304 G YS-018 24V
Technical parameters
| DN | G thread, inch | Ø cross-sections, mm | Cv |
| 15 | 1/2" | 15 | 4.8 |
| 20 | 3/4” | 20 | 7.6 |
| 25 | 1" | 25 | 12 |
| 32 | 1 1/4" | 32 | 24 |
| 40 | 1 1/2" | 40 | 30 |
| 50 | 2” | 50 | 48 |
Pressure and power
| DN | Nominal pressure, bar | Coil power | ||
| AC 220V | DC 24V | AC 220V, VA | DC 24V, W | |
| 15 | 10 | 6 | 23 | 28 |
| 20 | 10 | 6 | 23 | 28 |
| 25 | 10 | 6 | 48 | 42 |
| 32 | 10 | 5 | 48 | 42 |
| 40 | 10 | 5 | 48 | 42 |
| 50 | 10 | 5 | 48 | 42 |
- Body material
- Stainless steel AISI 304
- Connection type
- Threaded
- Operating environment
- Water, Steam, and High-Temperature Liquid
- Applications
- Chemical Industry, Steam Supply, Industry, Food Industry, Hot/Cold Water Supply, and Housing And Communal Services And Heating Networks
- Nominal pressure
- 10 bar
- Type of seal
- PTFE
- Solenoid valve type
- normally closed
- Solenoid valve working principles
- Direct action
- Supply voltage
- 24 V
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal