• Shenzhen Wofly Technology Co., Ltd.
    Dariof Fassini
    All perfect. Quality is 4.5 on 5 but quality to price ratio is excellent.
  • Shenzhen Wofly Technology Co., Ltd.
    Jasper Mokkink
    I have had an great experience ordering from Wolfy! The communication was always quick and clear. Adding parts to your order after you made your payment is also accepted by Wolfy. They are also willing to hold your order for a little bit if you need time to decide what additional parts you would like to add. I ordered compression fittings.
Contact Person : Catlin Zeng
Phone Number : 0086-13430639757
WhatsApp : +8613430639757

oxygen gas two stage cylinder pressure regulator with gauge

Place of Origin Guangdong, China (Mainland)
Brand Name AFK
Certification CE
Model Number R31-BN
Minimum Order Quantity 1 Set/Sets
Price Negotiable
Packaging Details In carton. It is upon your request.
Supply Ability 2000 Set/Sets per Month

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Product Details
Material Nickel Plated Brass, Stainless Steel 316L Structure Double Stage, Diaphragm
Applicable Media Pure Gas, Standard Gas, Corrosive Gas Maximum Inlet Pressure 3000psi, 500psi
Outlet Pressure Range 0~25, 0~50, 0~100, 0~250psi Temperature -10~+74°C (-40~+165°F)
Cv 0.06 Optional Panel Mounting, Relief Valve
Port Shenzhen
High Light

flow control valve


gas cylinder regulator

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Product Description


oxygen gas two stage cylinder pressure regulator with gauge



Technical Parameter:


Maximum Inlet Pressure 500,3000psig
Outlet Pressure Ranges 0~25, 0~50, 0~50,0~250,0~500psig
Safety test pressure 1.5 times maximum inlet pressure
Operating Temperature -40°F to +165°F / -40°c to 74°c
Leakage Rate Against Atmosphere 2*10-8atm cc/sec he
Cv value 0.06




Body 316L.Brass
Bonnet 316L. Brass
Diafragm 316L
Strainer 316L(10 μm)
Seat PCTFE,PTEE, Vespel
Spring 316L
Plunger valve core 316L


Design Feature:


Single-stage pressure reducer

Maternal and diaphragm use hard seal form

Body NPT:inlet and outlet interface 1/4''NPT(F)

The internal structure easy to purge

Can set filters

Can use a panel Intallation

Inlet form:Needle valve, membrane valve


Typical Applications:



Gas Chromatography

Gas laser

Gas bus-bar

petro-chemical industry

Test equipment


Ordering information:


oxygen gas two stage cylinder pressure regulator with gauge 0

Ordering Information

R31 L B G G 00 00 02 P
Item Body Materia









Inlet size Outlet size Options
R31 L:316 M D:3000psi G:0-250psig G:MPa gauge 00:1/4 NPT(F) 00:1/4 NPT(F) P:panel mounting
  B:Brass Q F:500psi I:0_100psig P:Psig/bar gauge 01:1/4 NPT(M) 01:1/4 NPT(M) R:With relief valve
        K:0-50psig W:No gauge 23:CGA330 10:1/8 OD N:With needle valve
        L:0-25psig   24:CGA350 11:1/4 OD D:With diaphragm valve
        Q:30 Hg Vac-30psig   27:CGA580 12:3/8OD  
        S:30 Hg Vac-60psig   28:CGA660 15:6mm OD  
        T:30 Hg Vac-100psig   30:CGA590 16:8mm OD  
        U:30 Hg Vac-200psig   52:G5/8-RH(F) 74:M8X1-RH(M)  
Once you send the inquiry, pls send order code e.g.:R31-L-M-D-G-P-00-00-P. Or pls send us following information so that we select select model:
1.Media (sevice as)? co2 or?
2.atual inlet pressure and outlet pressure?
3.Flow rate?
4.Inlet connection and out connection?
5.Material or ss316?



High pressure CGA 330 dual stage CO2 gas pressure regulator


My dear friend, if you wanna know more about our products, send me inquiry or email ,we will reply you within 24 hours!


The following information should be included in your inquiry:

1. Inlet working pressure

2. Outlet working pressure

3. Inlet conenction and size

4. Outlet conenction and size

5. Material: brass or stainless steel

6. If you have special flow rate requirements,  please indicate it.

7. Quantity


Notes: Please write the above descriptions as possible as you can. If you can not confirmed it at the moment, just send us inquiry, we also can recommend our regular model for you.