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Chrome Plated Finish Diaphragm Type QF-21A Oxygen Air Nitrogen Gas Cylinder Valve
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Chrome Plated Finish Diaphragm Type QF-21A Oxygen Air Nitrogen Gas Cylinder Valve

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•Model: 08-858-703
•Medium: O2/Air/N2
•WP(MPa): 15MPa
•Inlet Thread: PZ19.2
Price: $ 6.3 / set
  • 08-858-703
  • SiAN
  • QF-21 Diaphragm Type Oxygen Cylinder Valve


Product Description: 

Sian(Fuhua) offers a wide range of valves, including industrial gas valves and medical gas valves. Sian committed to fluid control, creating a safe and livable environment for humans. Since 1992, we have been cooperating with domestic and overseas well-known oil & gas companies, gas cylinder companies.

SiAN valve is professional safe valve, which handels the pressure safety super well!!! SiAN gas cylinder valves do good job in safety control!!!

With SiAN diaphragm type oxygen nitrogen gas cylinder valve installed to industrial gas cylinders, our clients are able to use O2/Air/N2 safely for various industrial purposes.

Product Characteristics:

1. High pressure gas cylinder valve

2. Ningbo Fuhua Valve Factory SiAN Brand O2/Air/N2 gas cylinder valve

3. Brass oxygen nitrogen gas cylinder valve

4. Diaphragm type oxygen gas cylinder valve

5. Diaphragm type oxygen nitrogen gas cylinder valve


Data Sheet:

Product Name Product Model Product ID Medium WP(MPa) Inlet Thread Outlet Thread  Nominal Diameter Φmm Safety device
Diaphragm Type Oxygen Nitrogen Gas Cylinder Valve QF-21A 08-858-703 O2/Air/N2 15MPa PZ19.2 W21.8x1/14 Φ2 19.5-22.5MPa

•Production Standard: GB15382-2009



Question 1

Question:   What's your price level?

Answer:  We are manufacturer and the unit cost depends on your order quantity, more quantity means less unit cost.

Question 2

Question:  Can I visit your factory and then place order?

Answer:  Certainly,welcome you visit us at your convenience. Our address is Wucheyan, Huangjiabu Town,Yuyao City,Zhejiang Province.

Question 3

Question: Can you send me your price list?  

Answer:  We produce over 300 different items, could you please send me the items you need and your purchase quantity accordingly? so that we can quote you exact price.


Welcome to contact us freely for more details about our products! 

Product Inquiry
With an annual production of 20 million sets of valves, we are one of the leading valve brands in the world. Our sales network covers more than 50 countries and regions.



 +86 571 8768 0216
Factory Website: 
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