Introduction
A normally closed electric valve with an auto-return function upon power loss, serving as a core safety component for automatic pipeline shut-off.
Technical Parameters
| Valve Body Diameter | 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" (Optional NPT/BSP) |
| Valve Body Material | Stainless Steel 304 |
| Actuator Material | Engineering Plastics |
| Sealing Material | FKM&PTFE |
| Wiring Diagram | CR202 (Auto Return When Power Off) |
| Working Voltage | AC110-230V (Optional AC/DC9-24V, AC110-230V, AC24V/DC12-24V) |
| Working Current | ≤500mA / ≤1A |
| Working Medium | Fluid, Air |
| Working Pressure | Max 1.0MPa |
| Switching Time | ≤5s / ≤15s / ≤12s |
| Life Time | 70000 times (Testing pressure is 0.4MPa, medium is water) |
| Actuator Rotation Angle | 90° / 360° |
| Torque Force | 2N.m |
| Cable Length | 1.5m |
| Environment Temperature | -15℃ ~ 50℃ |
| Liquide Temperature | 2℃ ~ 90℃ |
| Switch Indicator | YES |
| Manual Override | No |
| Protection Class | IP67 |
Core Technical Performance
Power-off auto-return design ensures immediate closure during system failure or outages.
304 Stainless Steel body with FKM & PTFE seals, compatible with corrosive fluids and high temperatures.
IP67-rated enclosure allows reliable operation in outdoor, rainy, or humid industrial environments.
Verified via 70,000 pressurized cycles to ensure consistent drive torque over long-term use.
Key Applications
Water Supply & Drainage
Emergency shut-off during power failures to prevent overflow risks.
Industrial Automation
Safety cut-off in pneumatic or hydraulic lines to ensure process integrity.
Medical & Cleaning Equipment
Precision fluid control and corrosive media transfer requiring high chemical resistance.
Customization
01
Control Circuit Options
Choice of CR202, CR502, and other logic wiring to match signals from mainstream PLCs and controllers.
02
Power Supply Selection
Range from DC12V-24V low voltage to AC110V-230V wide voltage to adapt to global grids and device needs.
03
Connection Standards
Sizes from 1/4" to 2" with customizable NPT, BSP, or other specific mechanical thread standards.
Quality Systems & Standards
Global Market Standards
Adheres to international standards such as CE, ensuring compliance and universality for global engineering projects.
Industrial EMC Standards
Circuit designs meet EMI specifications, preventing malfunctions in environments with heavy machinery or interference.
Full Production Traceability
Digital records from casting to final testing allow deep tracking of material composition and performance data.
Our Professional Experience
Vast Industry Expertise
Years of experience in fluid control, providing proven shut-off solutions for thousands of projects worldwide.
Expert Technical Team
Professional engineering support capable of reviewing technical drawings and providing sizing and on-site tuning advice.
Robust Inventory Management
Long-term component stock for standard sizes ensures high-efficiency delivery for bulk orders or urgent maintenance.
FAQ
Q1: How reliable is the "Power-to-Open, Auto-Return" mechanism during frequent operation?
A: This product utilizes reliable capacitor or mechanical return mechanisms, verified through 70,000 cycles. It consumes less power while open than solenoids and provides a more stable reset.
Q2: What media are the FKM and PTFE seal combination specifically for?
A: This combination offers excellent chemical and temperature resistance (up to 90°C). It is suitable for water, air, oils, and weak acids/bases, preventing premature aging of the valve seat.
Q3: Does an IP67 rating mean the valve can be fully submerged during use?
A: IP67 indicates protection against short-term immersion. It is perfectly suited for outdoor spray or damp environments, though we recommend drainage measures for permanent submersion.
Q4: For larger sizes like 1-1/2" or 2", will the 5-15s actuation time cause water hammer?
A: The advantage over solenoids is the smooth rotational opening. The 5-15s speed effectively buffers fluid momentum changes, significantly reducing the risk of water hammer in large-bore pipes.
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