STDF Underwater Waterproof Solenoid Valve For Fountains
We Mainly do Pneumatic Cylinder, solenoid valve, pneumatic valve, air treatment units, quick connection fittings and PU tube . Our 4V. 3V.2V.2p .solenoid valve ,and 4A.3A Pneumatic valve sell so hot in Asia, Europe,and Middle East. We are popular in pneumatic and Hydraulic market. Our accessories taked from the same supplier as Airtac.
STDF Underwater Waterproof Solenoid Valve for Fountains
Basic Info:
We Mainly do Pneumatic Cylinder, solenoid valve, pneumatic valve, air treatment units, quick connection fittings and PU tube .
Our 4V. 3V.2V.2p .solenoid valve ,and 4A.3A Pneumatic valve sell so hot in Asia, Europe,and Middle East.
We are popular in pneumatic and Hydraulic market. Our accessories taked from the same supplier as Airtac.
Product Overview
STDF Underwater Waterproof Solenoid Valve for Fountains are specially developed for fountain and waterscape projects. With integrated sealed waterproof structure, it can work normally under water for a long time.
It owns stable flow control and strong environmental adaptability, widely used in musical fountain, landscape waterscape, underwater pipeline and other facilities for automatic water flow on-off control.
General Specifications
| Parameter | Specification | Remarks / Selection Notes |
|---|---|---|
| Product Model | STDF Series | Specifically for fountains |
| Operating Principle | Direct-acting diaphragm type | Zero differential pressure start |
| Control Type | Normally Closed (standard) | Opens when energized, closes when de-energized |
| Body Material | Brass (hot forged) / SUS304 Stainless Steel | Stainless steel recommended for seawater |
| Sealing Material | NBR / FKM / EPDM | NBR for general water applications |
| Suitable Media | Water, fresh water, seawater, air, light oil | Fountain applications primarily water |
| Nominal Pressure | 0 ~ 1.0 MPa (0-10 bar) | Zero differential pressure start for DN≤50 |
| Media Temperature | -5°C ~ +60°C | Standard water temperature range |
| Ambient Temperature | -25°C ~ +60°C | |
| Port Size Range | DN15 (1/2") ~ DN50 (2") | |
| Connection Type | Threaded (G-thread) / Flanged (optional) | |
| Cv Value | 3.2 (DN15) ~ 30 (DN50) | |
| Operating Voltage | AC24V, AC110V, AC220V, DC12V, DC24V | AC24V safety voltage recommended |
| Power Consumption | DN≤50: 25W / DN>50: 45W | |
| Insulation Class | Class B | |
| Protection Rating | IP68 (submersible type) | Directly immersible in water |
| Service Life | ≥200,000 cycles | |
| Response Time | DN≤25: ≤0.4 sec / DN≤50: ≤0.4 sec | Fast response |
| Coil Lead Wire | 1 meter standard (extendable) | Specify length when ordering |
| Process Features | German technology, molded plastic coil (dust/moisture proof), ultra-quiet design |
Dimensions & Specifications by Size
| Connection (G/NPT) | DN | Valve Dimensions (L×W×H mm) | Cv Value | Max Pressure |
|---|---|---|---|---|
| 1/2" | 15 | 68 × 48 × 125 | 4.5 | 0.03~7.5MPa |
| 3/4" | 15 | 68 × 48 × 125 | 4.5 | 0.03~7.5MPa |
| 1" | 25 | 96 × 70 × 145 | 12 | 0.03~7.5MPa |
| 1¼" | 32 | 150 × 135 × 170 | 25 | 0.03~7.5MPa |
| 1½" | 40 | 160 × 145 × 180 | 31 | 0.03~7.5MPa |
| 2" | 50 | 185 × 155 × 210 | 50 | 0.03~7.5MPa |
Temperature Ratings by Seal Material
| Sealing Material | Temperature Range | Suitable Media |
|---|---|---|
| NBR | -20℃ ~ +80℃ | Air, water, natural gas |
| EPDM | -40℃ ~ +120℃ | Hot water |
| VITON / PTFE | -50℃ ~ +260℃ | Oil, hot water, low-pressure steam |
Dimensions – Threaded Connection
| Model | Connection Thread | DN | Length L(mm) | Height H(mm) | Cv Value |
|---|---|---|---|---|---|
| STDF-15 | G1/2" | 15 | 69 | 117 | 3.2 |
| STDF-20 | G3/4" | 20 | 73 | 123 | 6.0 |
| STDF-25 | G1" | 25 | 99 | 135 | 9.0 |
| STDF-32 | G1¼" | 32 | 115 | 155 | 12.0 |
| STDF-40 | G1½" | 40 | 110 | 170 | 21.0 |
| STDF-50 | G2" | 50 | 134 | 200 | 30.0 |
Sealing Materials & Temperature Range
| Seal Code | Sealing Material | Fluid Temperature | Suitable Media |
|---|---|---|---|
| X=N | NBR | -20℃ ~ 80℃ | Air, water, natural gas |
| X=E | EPDM | -20℃ ~ 135℃ | Hot water |
| X=V | VITON | -10℃ ~ 155℃ | Hot oil, hot water |
Model & Specification Table (G/NPT Thread Connections)
| Port Size | Orifice (mm) | Flow (Cv) | Pressure Rating |
|---|---|---|---|
| 1/2" | 15 | 4.5 | 0.3~16 Bar |
| 3/4" | 20 | 7.6 | 0.3~16 Bar |
| 1" | 25 | 12 | 0.3~16 Bar |
| 1½" | 40 | 19.2 | 0.3~16 Bar |
| 2" | 50 | 24 | 0.3~16 Bar |
Electrical Specifications
| Voltage | Coil Power | Operating Current | Coil Model | Connection Type |
|---|---|---|---|---|
| AC220V | 9VA | 0.04A | BA11 | Junction box |
| DC24V | 8W | 0.35A | BA11 | Junction box |
| AC110V | 9VA | 0.82A | BA11 | Junction box |
| DC12V | 8W | 1.68A | BA11 | Junction box |
| AC24V | 9VA | 0.375A | BA12 | 300mm lead wires |
| AC36V | 9VA | 0.25A | BA12 | 300mm lead wires |
Quick Selection Guide
| Nominal Diameter | Pipe Size | Recommended Model |
|---|---|---|
| DN10 | 3/8" | 2W-15-31X |
| DN15 | 1/2" | 2W-15-41X |
| DN20 | 3/4" | 2W-20-51X |
| DN25 | 1" | 2W-25-61X |
| DN32 | 1-1/4" | 2W-32-71X |
| DN40 | 1-1/2" | 2W-40-81X |
| DN50 | 2" | 2W-50-91X |
Media & Seal Material Selection
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Selection Tips
1, Voltage Matching: AC220V is for standard mains power; DC24V/12V are better for industrial control, vehicle, and low-voltage systems. Always confirm the coil voltage to avoid burnout. 2,Temperature Limits: The seal material determines the maximum operating temperature. For example, NBR (80°C max) is not suitable for continuous use in hot water above 80°C, as it will degrade and leak. 3,Media Compatibility: Oily media requires VITON seals, as NBR will swell and fail in oil. Steam applications should use VITON or higher-grade seals. 4,Size Consistency: Always match the valve size to your pipe's nominal diameter. Using a smaller valve will restrict flow and shorten its lifespan.
Supplementary Key Points (3 Points Summary)
✅PTFE Seal UpgradePTFE sealing is newly upgraded, with temperature resistance up to 260℃, excellent resistance to strong acid, alkali and organic solvents, ideal for chemical and high-temperature steam working conditions.
✅Dual Power OptionsIt provides dual power specifications: 22VA/30VA for AC and 17W/24W for DC, matching different coil types and adaptable to customers' various power load requirements.
✅Model Code RuleThe letter X in the model stands for sealing material code: N=NBR, E=EPDM, V=VITON; just replace it directly when ordering.
Our Advantages:
✅Professional full waterproof design, stable long-term underwater operation
✅High-quality anti-corrosion material, resistant to water erosion and aging
✅Silent switch action, effectively reduce water hammer impact
✅Superior sealing performance, zero water leakage, safe and reliable
✅Fully encapsulated waterproof coil, moisture-proof and insulation
✅Compact structure, easy installation, stable performance and long service life |
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When selecting a stainless steel pneumatic air gripper cylinder, consider factors such as gripping force, stroke length, operating pressure, compatibility with the object size and weight, and the specific environmental conditions of your application. It is advisable to consult the manufacturer's specifications and guidelines to ensure the proper selection, installation, and operation of the gripper cylinder for your specific requirements.
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