EN
Features
1. Metal-to-metal seal for leak-free service in the vacuum to high pressure range
2. Small internal volume for complete purging of the flow path
3. Fully encapsulated valve seat design for greater durability and corrosion resistance
4. Nickel-cobalt alloy diaphragm for greater durability and corrosion resistance
5. Standard roughness of Ra0.25μm (BA grade) or electrolytic polished Ra0.13μm (EP grade) available
6. Leakage rate<1 x="" 10-9="" std="" cm3="">
| Serial number | element | texture of material |
| 1 | Handle | Aluminium |
| 2 | Actuators | Aluminium |
| 3 | Valve stem | 304 SS |
| 4 | Bonnet | S17400 |
| 5 | Bonnet nuts | 304 SS |
| 6 | Buttons | 304 SS |
| 7 | Diaphragm (2) | Nickel-cobalt alloys |
| 8 | Valve seat | PCTFE or PFA |
| 9 | Valve body | 316L SS or 316L VAR 316L VIM-VAR |
| Technical data | |
| Port size | 1/4", 3/8" |
| Flow coefficient (Cv) | 0.27 |
| Inner diameter | 0.16 in. (4.1 mm) |
| Maximum working pressure | 10 bar (150 psig) |
| Pneumatic actuator working pressure | 4.2~6.2 bar (60~90 psig) |
| Operating temperature | PCTFE:-23~65℃(-10~150℉) |
| PFA:-23~150℃(-10~302℉) | |
| Leakage rate (helium) | ≤1×10 mbar l/s |
| ≤1×10 mbar l/s | |
| Flow data | ||
| Air @ 21°C (70°F) 10.2 | ||
| Water @ 16°C (60°F) | ||
| Pressure drop to 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 |
Cleaning process
Standard (WK-BA)
Welded joints are cleaned according to our standard cleaning and packaging specifications, to be ordered without the addition of a suffix.
Cleaning for oxygen (WK - O2) Product cleaning and packaging specifications for use in oxygen environments are available, and this meets ASTM G93 Class C cleanliness requirements; to order, add -O2 to the ordering number.
Ultra High Purity (WK-EP) Available in controlled surface finish, electrolytically polished Ra 0.13μm, ultrasonically cleaned in deionised water. To order, add - EP to the order number.
| Basic Order Number | Port types and sizes | Dimensions in. (mm) | |||
| A | B | C | L | ||
| WV4-6L-TW4- | 1/4" Tube butt weld fittings | 0.44 (11.2) | 0.30 (7.6) | 1.06 (26.9) | 1.74 (44.2) |
| WV4-6L-TW6- | 3/8" Tube butt weld fittings | 0.44 (11.2) | 0.26 (6.6) | 1.06 (26.9) | 1.74 (44.2) |
| WV4-6L-FR4- | 1/4" female thread MCR fitting | 0.44 (11.2) | 0.86 (21.8) | 1.06 (26.9) | 2.78 (70.6) |
| WV4-6L-MR4- | 1/4" integral male MCR fitting | 0.44 (11.2) | 0.62 (15.7) | 1.06 (26.9) | 2.24 (57.0) |
Inside white box, outside carton
WOFLY is a leading Manufacturer, Supplier and Exporter of a wide range of gas Equipement, available under the brand name AFK. Wofly's success yields from high-quality, innovative products, exceptional customer service, and unequaled technical expertise in the gas& oil industry. WOFLY offers an extensive line of components including tube fittings, control valves, shut-off and solenoid valves, pressure relief and regulators. Through the years we have learned how to properly match the gas regulation equipment with the application. Using the proper equipment for the job eliminates problems such as contamination, pressure variances, safety issues, and equipment mismatch.
Wolfy
Presenting the High-Quality Stainless-steel 1/4in Manual Diaphragm Valve The solution perfect controlling Nitrogen Oxygen Helium other gases even in high temperature environments.
Designed with durability in brain. Made from High-Quality steel stainless lasting performance even under harsh conditions. The size this is 1/4in perfect for used in various industries like meals and drink pharmaceuticals and automotive.
Made to withstand pressure this is low. Can tolerate Wofly up to 150psi of force rendering it ideal for used in low force gas lines. The manual actuation allows for simple and control precise you full command over gas flow.
The style diaphragm tight control preventing leaks and ensuring safety in your project’s environment. The stress this is manual valve further enhances this valve's safety features giving you the additional good thing about releasing pressure before you decide to even start the valve.
Can efficiently manage gases at a heat this is high it the most wonderful option for utilized in industrial environments. It could easily withstand temperatures up to 300 degrees Celsius with confidence in high-temperature environments so that you can put it to use.
Fully compliant with OEM standards meaning you can rely on it to meet all the mandatory regulations and gives performance this is reliable the application. This valve is a dependable and versatile option for your gas control needs along with its sturdy construction manual procedure and efficient design.
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