Packaging & Shipping
Package and Delivery
Selling Units: Single item
Single Package Size: 10 x 10 x 10 cm
Single Gross Weight: 0.3 kg
Export Packaging Standard: Double-layer protection ensures product safety: vacuum-sealed inside and robust plastic packaging outside, complemented by a durable white carton and strong cardboard box.
Product Parameters
Specification
Technical data |
Port Dimension : 1/4'' ,3/8'' |
Flow coefficient :Cv=0.27 |
Internal diameter (id) : 0.16in.(4.1mm) |
Maximum working pressure |
Pneumatic diaphragm valve: 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 |



Features
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 |
Pneumatic executor s are available |
Pneumatic valve life up to 3 million times |
FAQ
FAQ
1. What's your payment ?
A:T/T,Western Union, Paypal, credit card and trade assurance on Made in China.
2. Where is there market for your factory?
A:Southeast Asia ,UNE,and America ,Europe.
3. Can you surpport OEM,ODM ?
A:Yes,we can.
4. Can you accept sample order and what is your MOQ?
A:All products are in stock, MOQ is 1 pcs, Generally according to the requirements of customers, no matter how many we can accept.
5. Which certificate do you have?
A:ISO9001,CE,RoHS.
6. What is your Brand?
A:AFKLOK.
7. What is your warranty?
A:1 year warranty.
8. Can after-sales service and technical consultation respond in time??
A:Technical services are available 24H/D.Our technical team can provide technical services for pre-sale, after-sale, installation and research and development of new products.
9. What is your delivery time(D/T)?
A:1~2 weeks.
10. Did you test all goods before delivery?
A:100% passed pressure and helium leak detection tests.
11. Do you have a patent for your invention?
A:Yes ,we have more than 40 patents, including 16 national patents.
12. What are your testing standards for your products?
A:Helium leakage rate reaches≤10-9mbarL/S, and fatigue life of pneumatic diaphragm valve reaches 400W times.
13. Which standard material Wofly choose ?
A:Material :
1. valve body:SEMI standard 316L rod, 316L VAR and 316L VIM-VAR are optional.
2. diaphragm strip:Hastelloy and nickel-cobalt alloy imported from the United States or Europe .
3. valve seat:PCTFE, PFA.
14. How to manage and control produce process ?
A: 1. Wofly strictly obeys ISO9001-2015 quality management system.
2.The ultrasonic cleaning, welding, assembly, testing and packaging of the valve are completed in the clean workshop.
3.Each process is monitored, tested and recorded by the quality Department specialist to ensure the reliability of each process index.
15.Can after-sales service and technical consultation be provided in time?
A:Technical services are available 24H/D.Our technical team can provide technical services for pre-sale, after-sale, installation and research and development of new products.
Company Real Scene Display
1. Clean Workshop: Precision and hygiene meet to guarantee top-tier production quality.

2. CNC Machine Workshop: Cutting-edge technology for unparalleled precision and efficiency.
Product Description
Working Principle:
The diaphragm valve is a specialized cut-off valve utilizing a flexible diaphragm to open and close the flow path. This mechanism not only halts fluid flow but also isolates the valve body cavity from the valve cover cavity. The diaphragm is crafted from materials renowned for their elasticity, corrosion resistance, and impermeability, such as rubber and plastic. The valve body itself can be composed of plastic, glass fiber reinforced plastic, ceramics, or metals, each chosen for their durability and performance. The valve's simplified structure offers excellent sealing, corrosion resistance, and minimal fluid resistance. It is available in manual, pneumatic, and electric models, catering to diverse operational needs.
Our Advantages
Wofly's pneumatic diaphragm valve stands out due to its innovative design and superior working principle. It showcases unparalleled advantages across numerous applications, ensuring it as the top choice for professionals seeking reliability and efficiency in their operations:
Efficient sealing performance |
Pneumatic diaphragm valve uses soft and corrosion-resistant diaphragm as the valve closing part. This design can provide excellent sealing effect and effectively prevent medium leakage. |
Strong corrosion resistance |
Diaphragm materials choose PFA, PTFE materials with high corrosion resistance which make it suitable for treating strong acid, strong alkali and other corrosive media. |
Simple maintenance |
The structure is relatively simple, and there is no packing device, which reduces the potential leakage points. In addition, it has low maintenance requirements, is easy to disassemble and clean, and is especially suitable for occasions requiring frequent cleaning. |
Accurate control |
By controlling the valve opening through the pneumatic actuator, the accurate adjustment of flow can be realized. The response speed is fast, and it can quickly adapt to the change of process parameters. |
Wide application range |
Can be applied to various industries, including chemical industry, pharmacy, food processing and other fields. It is especially suitable for treating media containing particles or viscosity. |
Good security |
Because of the pneumatic driving mode, the potential safety hazards caused by electrical components are avoided, especially in flammable and explosive environments. |