Straight Through Diaphragm Valve
The FYL Straight Through Diaphragm Valve is designed for stable on/off fluid control in demanding industrial systems. It focuses on solving key issues such as leakage risk, flow blockage, difficult maintenance, and unstable performance under complex media conditions. With a straight flow path and diaphragm isolation structure, the valve ensures reliable operation while keeping maintenance simple and cost-effective.
Product Introduction
The FYL Straight Through Diaphragm Valve is engineered for applications where media purity, corrosion resistance, and operational stability are required. Its core design separates the actuator from the process fluid using a flexible diaphragm, reducing the risk of internal corrosion and mechanical wear.
The straight-through channel design allows media to pass with minimal resistance, which helps reduce sediment buildup and lowers the risk of clogging. This structure makes it suitable for fluids containing particles, slightly corrosive liquids, or viscous media. It is widely applied in water treatment systems, chemical processing lines, food production facilities, and industrial utility systems.
Key Challenges It Solves
1. Reduces Leakage in Industrial Pipelines
The diaphragm sealing structure forms a reliable barrier between the fluid and valve body. This reduces leakage points commonly found in traditional valve designs and improves system safety during continuous operation.
2. Improves Maintenance Efficiency
The valve is designed for quick diaphragm replacement without dismantling the entire pipeline. This simplifies maintenance procedures and helps reduce downtime during servicing.
3. Prevents Blockage in Complex Media
A straight flow path reduces internal resistance and minimizes material accumulation. This makes the valve more suitable for slurry, suspended particles, and viscous industrial fluids.
4. Optimizes Long-Term Operating Costs
With durable sealing materials and stable structural design, the valve reduces frequent replacement needs and lowers maintenance-related expenses over time.
Technical Specifications
| DN Size | Inch | Pressure Rating (MPa) | Working Pressure (MPa) | Length (L mm) | Body Diameter (D mm) | Flange Diameter (D1 mm) | Bolt Configuration |
|---|---|---|---|---|---|---|---|
| 20 | 3/4" | 1.0 | 1.0 | 115 | 105 | 75 | 4-14 |
| 25 | 1" | 1.0 | 1.0 | 125 | 115 | 85 | 4-14 |
| 32 | 1¼" | 1.0 | 1.0 | 150 | 140 | 100 | 4-18 |
| 40 | 1½" | 1.0 | 1.0 | 160 | 150 | 110 | 4-18 |
| 50 | 2" | 1.0 | 1.0 | 188 | 165 | 125 | 4-18 |
| 65 | 2½" | 1.0 | 1.0 | 215 | 185 | 145 | 4-18 |
| 80 | 3" | 1.0 | 1.0 | 250 | 200 | 160 | 8-18 |
| 100 | 4" | 1.0 | 1.0 | 300 | 220 | 180 | 8-18 |
| 150 | 6" | 0.6 | 0.6 | 400 | 285 | 240 | 8-22 |
| 200 | 8" | 0.6 | 0.6 | 520 | 340 | 295 | 8-22 |
| 300 | 12" | 0.4 | 0.4 | 750 | 445 | 400 | 12-22 |
Application Scenarios
Water Treatment Systems
Used for controlling water flow, sludge, and wastewater media where anti-clogging performance is required.
Chemical Processing Industry
Suitable for handling mild corrosive liquids and chemical solutions while protecting internal valve components.
Food & Beverage Production
Applies to hygienic fluid transfer processes with easy cleaning and reduced contamination risk.
Power & Environmental Engineering
Used in cooling water systems, treatment plants, and environmental protection equipment with stable long-term operation.
OEM Engineering Projects
Supports customized requirements including material selection, size adjustment, and connection standards for project integration.
Why Choose FYL Straight Through Diaphragm Valve
Stable Manufacturing Quality
Each valve is produced under a controlled process with strict inspection at every stage, ensuring consistent structural accuracy and sealing performance.
Flexible Engineering Support
FYL provides tailored solutions based on different pressure levels, media types, and installation environments to meet diverse industrial needs.
Efficient Production Cycle
Standard models can be delivered quickly, while customized orders follow a structured production schedule to ensure timely project support.
International Service Coverage
Technical support and after-sales service are available for global customers, helping resolve installation and operational issues efficiently.
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