Check Valves
Check valves are designed to provide automatic flow regulation and protection without the need for external power or signal sources. These valves integrate key functions such as retention, flow sensing, bypass control, and multi-stage pressure reduction. They ensure minimal pump flow protection while offering a static seal, no external leakage, and easy maintenance. Their non-electric design makes them safe, reliable, and cost-effective for installation and operation.
Key Features
- T-Shape Structure: Utilizes bypass multi-stage throttling, withstanding pressure differences from 4 MPa to 20 MPa.
- H-Shape Structure: Designed to handle pressure differences of up to 50 MPa.
- Rotary Slide Valve Structure: Suitable for temperatures below -60°C.
- Single-Stage Sleeve Pressure Reduction: Ensures zero leakage, ideal for small flow pump protection.
- High-Temperature Applications: With high melting points and steam tracing, suitable for oil synthesis processes.
Technical Highlights
- Optimized Main Circuit: Ensures minimal lift loss (less than 8 meters) even at maximum flow.
- Cavitation Prevention: Each stage’s minimum pressure is higher than the saturated steam pressure, reducing cavitation and extending valve life.
Product Series
- 1010, 1000 J0J0H, 1020, ARC, 2010, 1000 Z0J0B
Additional Benefits:
- Corrosion Resistance: Forged housing enhances resistance to corrosion.
- Pressure Reduction Options: Available with adjustable full travel for multi-stage pressure reduction or switch-type for single-stage reduction.
- Bypass Check Valve: Optional, depending on configuration, providing added control over flow dynamics.
Applications
These check valves are applied in the water injection pump for the Dalian Deep Blue oil reservoir. They can handle pressure differences of up to 50 MPa, with online adjustable bypass openings. The Type H structure is designed for space-saving installations, making them ideal for compact setups while ensuring high-performance flow control.
