Butterfly Type Dual Plate Wafer Check Valve Stainless Steel DN50-300 for Oil Water Gas Systems
Butterfly Type Dual Plate Wafer Check Valve manufactured from stainless steel, designed for oil, water, and gas applications. This valve prevents reverse flow in pipeline systems with compact design and reliable performance.
Design: API 594, API 6D, JB/T8937
Face to Face: API 594, API 6D, DIN 3202, JB/T8937
Pressure & Temperature Rating: ASME B16.34
Test & Inspection: ANSI B16.34, DIN 2401, GB/T9124, JB/T74
The double-valve check valve is engineered for pure pipelines and industrial applications including environmental systems, water treatment facilities, and high-rise building water supply and drainage pipelines. It effectively prevents reverse flow of media with reliable sealing performance.
| DN | L (mm) | D (mm) | D2 (mm) | D3 (mm) |
|---|---|---|---|---|
| 50 | 60 | 108 | 51 | 56 |
| 65 | 67 | 128 | 65 | 73 |
| 80 | 73 | 142 | 80 | 88 |
| 100 | 73 | 162 | 102 | 108 |
| 125 | 86 | 192 | 127 | 132 |
| 150 | 98 | 218 | 152 | 160 |
| 200 | 127 | 273 | 203 | 210 |
| 250 | 146 | 329 | 254 | 266 |
| 300 | 181 | 384 | 305 | 310 |
- Compact structure with length only 1/4 to 1/8 of traditional flange check valves
- Lightweight design weighing only 1/4 to 1/20 of conventional flange check valves
- Rapid valve flap closure with minimal water hammer pressure
- Clip-type installation with dual semicircle butterfly plates
- Spring-forced reset mechanism for reliable operation
- Multiple sealing options including body wear welding or rubber lining
Wenzhou Xidelong Valve Co., Ltd. specializes in valve design, development, and production with ISO9001 and CE certifications. Our products meet international quality standards and serve markets across the Middle East, Europe, and Asia.
Professional wood case packaging with skilled handling to prevent damage. Multiple transportation options available including sea, air, and rail freight. Delivery timeframe: 7-60 days based on order requirements.
We are a factory-based manufacturer.
Delivery timeframe ranges from 7 to 60 days depending on order specifications.
Yes, we offer free samples with freight costs to be covered by the customer.
Orders under $1000 USD: 100% payment in advance. Orders over $1000 USD: 30% T/T deposit with balance due before shipment.
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