Maria Valve
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The series High-pressure diaphragm valves are designed for semiconductor, solar photovoltaic, laboratory, and other applications requiring precision gas pipeline systems. These valves are ideal for high-purity fluids such as gas, water, and acidic liquids, providing reliable on/off functionality. The maximum working pressure for manual versions is 4500 psi (310 bar). Each valve undergoes 100% helium leak detection and functional testing before dispatch.
| Technical Data Specifications | |
|---|---|
| Port Dimension | 1/4'' |
| Flow Coefficient | Cv=0.2 |
| Maximum Working Pressure | Manual: 310 bar (4500 psig) / Pneumatic: 206 bar (3000 psig) |
| Pneumatic Actuator Pressure | 4.2 ~ 6.2 bar (60 ~ 90 psig) |
| Working Temperature | PCTFE: -23 to +65ºC | PFA: -23 to 150ºC |
| Surface Roughness | BA-Grade: Ra0.25μm | EP-Grade: Ra0.13μm |
| Leakage Rate (Helium) | Inside/Outside: ≤ 1×10^-9 mbar.l/s |
| Pressure Drop (bar/psig) | Air Flow (l/min) @21ºC | Water Flow (l/min) @16ºC |
|---|---|---|
| 0.68 (10) | 64 | 2.4 |
| 3.4 (50) | 170 | 5.4 |
| 6.8 (100) | 300 | 7.6 |
Export Packaging Standard: Double-layer plastic bag, vacuum-sealed interior, outer plastic packaging, white carton, and reinforced cardboard box.
Clean Workshop Assembly: All products are assembled in Grade 100 and Grade 1000 clean workshops. The average production capacity reaches 4000 pieces per month using automated tooling and specialized testing equipment.
Advanced Machining: Our workshop features CNC lathes and milling centers ensuring high precision for valve bodies, nuts, and connectors with high material utilization and stability.
