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    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.
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Phone Number : 0086-13430639757
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High Purity Changeover Manifold 316L With Switchover 300 Bar Semi - Automatic

Place of Origin China
Brand Name AFK
Certification CE
Model Number WL300
Minimum Order Quantity 1-9 Pieces
Price Negotiable

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Product Details
Maximum Inlet Pressure 3000, 500psig Output Pressure 0~25, 0~50, 0~100, 0~250psig
Working Temperature -40~+74 Deg C Applied Gas High Pure Gases, Standard Gases, Corrosive Gases And So On
Certificate ISO9001:2008 CE Body Material Ss316, Nickel Plated Brass
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gas control panel


pressure control panel

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Product Description

Product Description


WL300 Series Semi-automatic Changeover Device


It is suitable for high pressure gas cylinders and pressure relief gas supply on both sides, through the automatic changeover to realize continuous gas supply, with the function of purging.
The maximum input pressure of 20.7 Mpa (3000 psi), corrosion, clean workshop assembly test, suitable for laboratory, high purity gas such as gas analysis.


High pressure pressure regulator with one inlet pressure gauge.  

Body ports: 1/4NPT F
Body ports: 3 ports  
Type: can't be adjustable 
Body material: nickled plated brass and ss316L are available.
High Purity Changeover Manifold 316L With Switchover 300 Bar Semi - Automatic 0
High pressure regulator with one inlet pressure gauge.
Body ports: 1/4" NPT F 
Body ports: 3ports 
Type: can be adjustable
Body material: Nickled plated brass and ss316L are available.
High Purity Changeover Manifold 316L With Switchover 300 Bar Semi - Automatic 1

Technical Parameters

SS316L, brass, nickel plated brass ( Weigh :0.9kg)  
SS316L, brass, nickel plated brass
Valve Seat
Plunger Valve Core      
Maximun Input Pressure    
500,3000 psig        
Outlet pressure range
0~25, 0~50, 0~100, 0~250, 0~500 psig  
Safety Testing Pressure
1.5 times of maximum input pressure
Working Temperature          
-40°F~ +165°F (-40°C~ +74°C )
Leakage Rate
2×10-8 atm cc/sec He
CV Value


WL3 1 1 1 S H 1 1 -N2
Series Function Options Outlet Connection Inlet Connection Body Material





Gauge Gas Option
WL300 Series Semi-automatic Changeover Device 1.With emptying, purging distribution function 1:1/4”NPT(F) 1:1/4″Weldmg S:stainless H:3000psi 1:25psi 1:MPa Blank: None
  2.Wrthout Emptying, purging distribution function 2:1/4”Tube fitting 2:1/4”NPT(M) steel M:2200psi 2:50psi 2:Bar/psi N2:nitrogen
  3.Emptying. purging distnbuUon+pressure sensor 3:3/8”NPT(F) 3:3/8”Melding C:nickel plated L:1000psi 3:100psi 3:psi/KPa O2:oxygen
  4.With pressure sensor 4:3/8”Tube fitting 4:3/8”NPT(M) brass O: Other 4:150psi 4:Other H2:hydrogen
  5:Other 5:1/2”NPT(F) 5:1/2”Melding     5:250psi   C2H2:acetylene
    6:1/2”Tube fitting 6:1/2”NPT(M)     6:Other   CH4:methane
    7:Other 7:1/4”Tube fitting         Ar:argon
      8:3/8″Tube fitting         He:helium
      9:1/2″Tube fitting         Air:air

Please provide the following parameters in your inquiry as many as possible:
1. Inlet actual working pressure
2. Outlet actual working pressure
3. Inlet conenction and size
4. Outlet conenction and size
5. Material: brass, nickel plated brass, stainless steel
6. If you have special flow rate requirements and a panel, please indicate it.
7. Quantity
Notes: The ranges of pressure gauges, inlet connector, outlet connector can be equiped according your requirements. 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.


High Purity Changeover Manifold 316L With Switchover 300 Bar Semi - Automatic 2



Q. Are you manufacturer?

A. Yes, we are manufacturer.


Q.What is lead time?

A.3-5days. 7-10 days for 100pcs


Q. How do I order?

A.You can order it from Alibaba directly or send us a inquiry. We will reply you within 24 hours


Q. Do you have any certificates?

A. We have CE certificate.


Q. What materials do you have?

A. aluminium alloy and chrome plated brass are available. The picture shown is chrome plated brass. If you need other material, pls contact us.


Q. What is maximum inlet pressure?

A.3000psi (about 206bar)


Q. How do I confirm inlet connnection for cylidner?
A. Pls check cylinder type and confirm it. Normally, it is CGA5/8 male for Chinese cylinder. Other cylidner adapter are also
available e.g CGA540, CGA870 etc.


Q. How many types for connecting cylinder?

A. Down way and side way. (you can choose it)


Q. What is product warranty?

A: The free warranty is one year from the day of Commissioning qualified.If there is any fault for our products within the free warranty period, we will repair it and change the fault assembly for free.