Product Overview
The GEMÜ 8257 10DN412 21 (Part No. 88338539) is a precision-engineered 2/2-way solenoid valve from GEMÜ’s 8257 series, designed for reliable media isolation and precise flow control in process and pneumatic systems. Featuring a direct-acting or pilot-operated solenoid mechanism with a robust diaphragm isolation system, this valve ensures zero fluid contact with the solenoid actuator, making it ideal for aggressive or high-purity media. The 10DN412 designation indicates a DN10 nominal bore with a specific body and seal configuration, while the 21 suffix denotes the voltage and connection variant. This valve is a direct-fit replacement for OEM installations and is widely deployed in industrial process automation, water treatment, and pneumatic control circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Solenoid Valve (Process & Pneumatic) |
| Model Designation | GEMÜ 8257 10DN412 21 / 88338539 |
| Nominal Bore (DN) | DN10 |
| Operating Pressure | Standard Industrial Grade (Up to 10 bar, depending on media and configuration) |
| Voltage / Actuation | 24V DC / 230V AC (variant 21 – confirm per nameplate) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (threaded or flange per DN10) |
| Body Material | PVC, PP, or PVDF (media-specific) |
| Seal Material | EPDM or PTFE diaphragm |
Engineering Features & Advantages
- Precision Performance: Fast response solenoid actuation with reliable 2/2-way shut-off and precise flow metering, ensuring minimal pressure loss and consistent process control.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust diaphragm isolation system that protects the solenoid from aggressive media and extends service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including the GEMÜ 8257 series mounting interface and electrical connection.
- Media Isolation: The diaphragm design ensures zero contact between the process fluid and the solenoid actuator, making it suitable for high-purity and corrosive applications.
- Compact & Modular: Space-saving design with interchangeable coils and seal kits for simplified maintenance and reduced downtime.
Typical Industrial Applications
This solenoid valve is commonly used in water and wastewater treatment plants for dosing and shut-off control, in chemical processing for aggressive media handling, in pneumatic systems for actuator piloting, and in industrial process automation for precise fluid control in cooling, cleaning, and dosing circuits. It is also suitable for food and beverage applications where hygienic diaphragm isolation is required.
PRODUCT IMAGES
GEMÜ 8257 10DN412 21 / 88338539 Solenoid Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine GEMÜ 8257 10DN412 21 / 88338539 Solenoid Diaphragm Valve. This German-made 24V DC hydraulic component features a direct-acting diaphragm design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.