| Customization: | Available |
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| Media: | Gas |
| Temperature: | Ordinary Temperature |
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WV4 series low-pressure diaphragm valves are designed for semiconductor, solar photovoltaic, laboratory and other applications that need to lay gas pipeline systems. The diaphragm valve is suitable for the application of high purity gas and provides on/off function. The maximum working pressure of the low-pressure manual diaphragm valve is 150psi(10bar).Diaphragm valve 100% passed helium leak detection test and function test before leaving the factory.
Selling units:Single item
Single package size:10 x 10 x 10 cm
Single gross weight:0.3kg
| Technical data |
| Port Dimension : 1/4'' ,3/8'' |
| Flow coefficient :Cv=0.27 |
| Internal diameter (id) : 0.16in.(4.1mm) |
| Maximum working pressure |
| Manual : 20bar(300psig) Pneumatic: 10bar(150psig) |
| Pneumatic actuator working pressure :4.2~6.2bar(60~90psig) |
| Working temperature |
| PCTFE:-23~65ºC(-10~150°F) |
| PFA:-23~150ºC (-10~302°F) |
| Leakage rate (Helium) |
| Inside : ≤1×10^-9 mbar.l/s |
| Outside : ≤1×10^-9 mbar.l/s |
| Clean process |
| BA : Welded joints are cleaned in accordance with our standard cleaning and packaging specifications. |
| EP : Provides controlled surface finish, electrolytic polishing Ra0.13μm, ultrasonic cleaning with deionized water. To order, add the suffix -EP to the order number |
| Diaphragm valve installation methods mainly include the following: |
| 1. Horizontal installation: this is the most common installation method, suitable for liquids and gases, and easy to open and close. When installing, ensure that the fluid can pass smoothly, and pay attention to the opening direction of the valve. |
| 2. Vertical installation: suitable for conveying viscous liquid, such as honey, etc., which can prevent particulate matter or air bubbles from being fixed on the diaphragm, resulting in blockage or air leakage. Ensure that the upper and lower end faces of the valve body are parallel during installation. |
| 3. Lateral installation: it is suitable for places with limited space, and the diaphragm valve is installed on the side of the pipeline. |
| 4. Inclined installation is usually used in the environment where the installation site is limited, such as narrow cracks or uneven terrain in the field. The valve is inclined to facilitate the normal operation of the fluid. However, the inclination angle should not be too large, and it is recommended not to exceed 10 degrees. |
| 5. Preparation before installation: Before installation, check the valve specifications, clean up the internal sundries, and ensure the parallel alignment of piping flange surfaces. |
| Precautions: When installing, avoid using grease to paint the valve, so as to prevent rubber from aging and affect the service life of the valve. |
| Product Model |
Valve body material | Inlet types | Inlet dimension |
Out let types | Out let dimension | Executor type | Valve seat | Clean Process |
6L-316Stainless steel 6LV-316LVAR 6LW-316LVIM-VAR |
TW-Tube butt weld MR-VCRMale connector FR-VCR Female connector TF-Fractional Ferules |
4-1/4" 6-3/8" |
Sameasinlet Marking method same asinlet |
Handle C-Pneumatic Nomallyclosed O-Pneumatic Normally Open |
PCTFE A-PFA |
Standard(BA-grade) EP-Ultra high-purity(EP-grade) |
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| Flow rate data Air @21ºC(70°F) Water @16ºC(70°F) | ||
| Pressure drop at maximum atmospheric pressure bar(psig) |
Air (l/min) |
Water (l/min) |
| 0.68 (10) | 86 | 3.2 |
| 3.4 (50) | 230 | 7.2 |
| 6.8 (100) | 410 | 10.2 |
| Basic Ordering Number |
Connector types and specification | Dimension in. (mm) | |||
| A | B | C | L | ||
| W4-6L-TW4- | 1/4"Tube butt weld |
0.44(11.2) |
0.53(13.6) | 1.06(26.9) | 2.13(54.0) |
| WV4-6L-TW6- | 3/8"Tube butt weld | 0.44(11.2) | 0.83(21.1) | 1.06(26.9) | 2.72(69.0) |
| W4-6L-FR4- | 1/4"FemaleVCR connector | 0.44(11.2) | 0.86(21.8) | 1.06(26.9) | 2.78(70.6) |
| W4-6L-MR4- | 1/4"Integral male VCRconnector | 0.44(11.2) | 0.62(15.7) | 1.06(26.9) | 2.24(57.0) |
| W4-6L-TF4- | 1/4"Ferruleconnector | 0.44(11.2) | 0.71(18.0) | 1.06(26.9) | 2.47(62.8) |
| Metal to metal seal provides leak-free service in vacuum to high pressure range |
| Small internal volume, can completely purge the flow path |
| Fully wrapped seat design, with superior anti-expansion and anti-pollution capabilities |
| Nickel-cobalt alloy diaphragm for higher durability and corrosion resistance |
| The standard roughness is Ra0.25μm(BA class) or electrolytically polished Ra0.13μm(EP class) |
| Helium test leakage rate <1×10^-9 mbar.l/s |
FAQ
Production strength
1. Clean workshop assembly
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