Straight Pattern Diaphragm Valve
The FYL Straight Pattern Diaphragm Valve is designed to solve common industrial fluid control problems such as leakage, media blockage, unstable operation, and high maintenance costs. With a straight-through flow design and reinforced sealing structure, it provides stable shut-off performance for a wide range of working media. Compared with conventional valves, it offers easier maintenance, stronger corrosion resistance, and better adaptability to complex industrial environments.
Product Introduction
Manufactured by FYL, the Straight Pattern Diaphragm Valve is engineered for industries requiring reliable isolation and clean fluid control. The valve uses a flexible diaphragm as the sealing element, isolating the driving mechanism from the process medium. This structure helps extend service life and reduces internal corrosion risks. Its straight flow channel design also minimizes resistance, making it suitable for fluids containing particles, viscous materials, or mildly corrosive substances.
This model is widely used in water treatment, chemical processing, food production, power systems, and environmental engineering projects. FYL also supports OEM customization, allowing customers to select materials, sizes, and connection types based on actual working conditions.
Key Problems Solved
1. Prevents Leakage and Improves Safety
The valve adopts a dual sealing system combining diaphragm sealing and body sealing. This structure significantly reduces leakage risks, ensuring stable operation even under low-pressure conditions and helping avoid environmental contamination and material loss.
2. Simplified Maintenance Process
Unlike complex traditional valves, the diaphragm can be replaced quickly without removing the full valve body. This design reduces maintenance downtime and helps improve overall system efficiency in industrial operations.
3. Handles Complex Media with Ease
The straight-through internal channel reduces sediment buildup and clogging. It performs well when handling slurry, particles, or mildly corrosive liquids, making it suitable for demanding industrial environments.
4. Lower Total Operating Cost
Optimized manufacturing processes and stable performance reduce long-term replacement frequency. Compared with imported equivalents, the cost can be reduced while maintaining reliable functionality.
Technical Specifications
| Size (DN) | Inch | Nominal Pressure (MPa) | Working Pressure (MPa) | L (mm) | D (mm) | D1 (mm) | Bolt Holes |
|---|---|---|---|---|---|---|---|
| 20 | 3/4" | 1.0 | 1.0 | 117 | 105 | 75 | 4-14 |
| 25 | 1" | 1.0 | 1.0 | 127 | 115 | 85 | 4-14 |
| 32 | 1¼" | 1.0 | 1.0 | 148 | 140 | 100 | 4-18 |
| 40 | 1½" | 1.0 | 1.0 | 159 | 150 | 110 | 4-18 |
| 50 | 2" | 1.0 | 1.0 | 190 | 165 | 125 | 4-18 |
| 65 | 2½" | 1.0 | 1.0 | 216 | 185 | 145 | 4-18 |
| 80 | 3" | 1.0 | 1.0 | 254 | 200 | 160 | 8-18 |
| 100 | 4" | 1.0 | 1.0 | 305 | 220 | 180 | 8-18 |
| 150 | 6" | 0.6 | 0.6 | 406 | 285 | 240 | 8-22 |
| 200 | 8" | 0.6 | 0.6 | 521 | 340 | 295 | 8-22 |
| 300 | 12" | 0.4 | 0.4 | 749 | 445 | 400 | 12-22 |
Who Needs This Valve?
Water Treatment & Sewage Systems
Suitable for wastewater, sludge, and raw water control where clogging resistance and durability are required.
Chemical Processing Plants
Used for transporting weak corrosive liquids and chemical solutions while protecting internal components from corrosion.
Food & Beverage Industry
Supports hygienic fluid control with smooth internal flow channels, reducing contamination risks and simplifying cleaning.
Energy, Oil & Environmental Projects
Reliable for continuous operation in cooling systems, oil transfer lines, and environmental treatment equipment.
OEM & Engineering Contractors
FYL provides customization services including size, connection type, and material selection for different engineering requirements.
Core Advantages
Strict Quality Control
From raw material selection to final testing, every production stage is strictly monitored. Materials are tested for strength and composition before entering production, ensuring consistent quality output.
Flexible Customization Capability
FYL supports OEM/ODM projects with tailored solutions based on pressure level, media type, and installation requirements. Thousands of customized projects have been completed for global customers.
Efficient Production & Fast Delivery
Standard models can be delivered within 3–7 days, while customized orders are typically completed within 15–20 days, helping reduce project waiting time.
Global Service Support
FYL provides 24/7 technical consultation and after-sales support for overseas customers, ensuring quick response to installation and operational issues.
Company Overview
FYL is a manufacturing-focused enterprise integrating design, production, and global sales of industrial fluid control equipment. The company specializes in valves, pipe fittings, and water treatment equipment, serving industries such as water conservancy, chemical engineering, energy systems, and environmental protection.
With strong OEM capabilities and an experienced technical team, FYL continuously improves product performance and supports customized industrial solutions for global partners. Products are exported to Europe, North America, the Middle East, and Southeast Asia, maintaining stable long-term cooperation with international clients.
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