Phone: 1-877-739-2721

471 Series Switchover


(shown with optional line regulator,
inlet distribution blocks and pigtails)

Automatic Switchover System

Primary and Secondary Regulation

High Purity Applications

Chrome Plated Brass Barstock

The model 471 Switchover System is designed to provide a continuous supply of non-corrosive gas or liquefied gas* from two or more cylinders, allowing uninterrupted delivery of gas to critical applications such as gas chromatography carrier gases. A line regulator incorporated into the system assures no downstream fluctuation of gas pressure during the automatic switchover sequence.

* Provided the liquefied gases have a vapor pressure of at least 300 psig




Features & Benefits

Maximum Inlet Pressure
    3000 psig (210 bar)
    Chrome plated brass barstock 
 Encapsulated Seat
    Ease of service and extended 
Temperature Range
    -40°F to 150°F (-40°C to 60°C ) 
    LL stainless steel
 316L stainless steel diaphragm
    Eliminates inboard diffusion
    1/4" FNPT
 Seat and Seal
 Minimal wetted surface area
    Minimizes purging requirements
    2" dual-scale psig/kPa
 Multi 100-micron inboard filters
    Protects seat seal
 Helium Leak Rate
    1 x 10-8 scc/sec
    Chrome plated brass
    12.1 lbs (5.5 kgs)