Normally Closed Solenoid Valves – Energize to Open: Reliable Solutions for Severe Industrial Applications
Normally closed solenoid valves are vital components in industrial systems, offering dependable control over fluid flow in critical and severe service applications. Designed to remain closed when de-energized and open only when energized, these valves from Plast-O-Matic excel in handling aggressive chemicals, caustics, and ultrapure liquids. This blog post delves into their features, applications, and advantages, showcasing why they are a trusted choice for demanding industrial environments.
What Are Solenoid Valves?
Solenoid valves are electromechanically operated devices used to regulate the flow of liquids or gases in industrial settings. An electric current energizes a solenoid coil, prompting the valve to open or close. Normally closed solenoid valves, specifically, stay closed when power is off, opening only when energized. This fail-safe design is ideal for applications where maintaining a closed state during power loss is critical for safety and process integrity. For more technical details, refer to this guide on solenoid valve mechanics.
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Plast-O-Matic’s Normally Closed Solenoid Valve Series
Plast-O-Matic offers a range of Normally Closed Solenoid Valves – Energize to Open, each tailored for specific industrial needs:
- Series EASMT/EASYMT: Equipped with PTFE bellows, these valves are perfect for pressure, drain, and vacuum services. They handle aggressive chemicals, acids, caustics, and ultrapure liquids like deionized water, featuring W24 fully rectified coils with Z-Cool DIN for consistent performance.
- Series EAST: Compact and cost-effective, this series is high-pressure rated and includes PTFE bellows. Available in Geon PVC, Natural Polypro, and Kynar PVDF, it suits various chemical and temperature conditions.
- Series PS: Requiring 5 psi inlet pressure, these valves offer high Cv performance and pressure ratings. Available in sizes from ½” to 3″, they come in multiple materials for flexibility.
Key Features of Normally Closed Solenoid Valves
Energy Efficiency: High efficiency lowers operational costs, supporting energy-efficient plating goals.
Superior Coating Quality: Low-ripple rectifiers ensure uniform metal deposition and oxide layers, reducing rejects in electroplating and anodizing.
Scalability: Modular rectifiers allow easy expansion, adapting to growing production needs.
Reduced Maintenance: Modular designs and robust IGBT technology minimize downtime and repair costs.
Environmental Impact: Lower energy use and compact footprints align with sustainability standards.
Types of Switchmode Rectifiers
These industrial valves boast features that ensure reliability in severe service applications:
PTFE Bellows: A durable seal enhances chemical resistance, ideal for aggressive chemicals and ultrapure liquids.
Extended Cycle Life: Built for a million-cycle lifespan, reducing replacement frequency and costs.
High Pressure and Vacuum Ratings: Versatile for both high-pressure and vacuum environments.
Material Variety: Options like Geon PVC, Natural Polypro, and Kynar PVDF allow customization for specific needs.
Where Are These Valves Used?
Normally closed solenoid valves shine in diverse industrial applications:
Chemical Processing: Safely manage aggressive chemicals and acids in processing plants.
Water Treatment: Maintain purity in ultrapure water systems, such as those in semiconductor production.
Vacuum Systems: Ensure reliable sealing in vacuum and drain applications.
General Industrial Use: Control caustic solutions and fluids across manufacturing processes.
Learn more about their role in chemical processing from this industry fluid control report.
Benefits of Choosing These Valves
The advantages of Plast-O-Matic’s solenoid valves include:
Chemical Compatibility: Resist a broad range of chemicals, ensuring durability.
Cost Efficiency: Long lifespan and robust build lower maintenance expenses.
Reliable Operation: Stay closed during power outages, enhancing safety.
Customization: Adaptable materials and sizes meet unique application demands.
Material Options for Customization
These valves offer materials suited to various conditions:
Geon PVC: Cost-effective for general chemical use.
Natural Polypro: Resistant to acids and caustics.
Kynar PVDF: Handles high temperatures and harsh chemicals.
PTFE Bellows: Provides a contamination-free seal for ultrapure applications.
