Radium Engineering DSV 12AN ORB To 12AN Male - Quick Fill (Internal)

1 In stock
$59.95 $56.95

Radium Engineering Dynamic Safety Vent (DSV) valves feature advanced tank venting and roll-over protection for fuel cells and gas tanks. The Radium Engineering DSV valves come in different varieties for all fill type applications; standard fill and quick-fill. Simply put, the larger the vent, the quicker the fuel cell can be filled. NOTE: Be sure to lubricate the FKM O-ring prior to installing either DSV valve.


  • Fuel Tank Venting - Once the tank is filled with fuel, the upper sealing ball valve floats to the top of the internal DSV chamber shutting off the air source. This safely prevents fuel from traveling up and out of the fuel cell vent line. 
  • Roll Over Protection - In case of an accident in which the wheels are up-ended, the lower stainless steel ball holds the ball valve down sealing the vent. This safely prevents fuel from leaking out of the fuel cell vent line. 


This internal DSV valve can be used for fuel tanks that have -12AN ORB female threads (including the Radium FCST). The high flowing -12AN male fitting permits dry break applications that use dump cans for quick fuel filling. The 1-piece machined part is manufactured from billet 6061 aluminum and type-II anodized. Included are 2 ball valves, FKM O-ring, and a stainless steel retaining ring. These materials are compatible with all fuel types including alcohol fuels such as methanol and E85. It can easily be disassembled for quick cleaning, inspection, and maintenance. 


  • DSV and filler height relationship: The vertical height of the top (shut-off) ball in the dynamic safety valve should be positioned lower than the highest point of the fuel fill point.
  • Filler and vent height relationship: The vertical height of at least one portion of the vent tubing (not included) should be positioned above the highest point of the fuel fill point. 
Shipping Time

Products that have an availability of "In Stock" are shipped same day or the next if ordered before 2 PM EST. Products that have an availability of "Manufacture Ship" are products that ship directly from the manufacture and usually ship within 2-3 business days. At times these items may take longer to ship. By contacting us via our contact form here we can give you an estimate on shipment.

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The billing and shipping address must be the same. If it is not we will call or email to verify the inconsistent addresses. This will put a hold on processing your order. If no response from either communication channels, your order will be cancelled and refunded in full.

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All returns are subject to re-stocking fee up to 20%. The restocking fee covers the cost of our order processing and restocking process. Items you wish to return MUST be approved prior to your return. Please click here to start the return process. All return inquiries must be sent to us within 30 days of receiving your order. Approved returns MUST be sent back to us within 15 days of receiving your return approval. Returned items must be in brand new condition or, unused condition. Shipping, handling, and transaction fees are non-refundable.

No returns, cancellations, or refunds are allowed on special order items. Once items have been returned to us, and the condition has been inspected and approved, a refund will be issued. Approved refunds are issued within 2-3 business days. Also note that each bank process returns differently, so it might not appear in your account immediately. Exchanges

Please click here to initiate an exchange. Exchanges are subject to second shipping charges unless there was a mistake made on the order. If a mistake was made by Complex Seven Industries, we will provide a return shipping label for you to use to make the exchange as seamless as possible.

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