- Delivery & Returns
The Lungfish Gemini Dual Tank Valve is a switch block that allows an on-the-go switching between two input gases to a single output. Simply it allows plugging two separate gas cylinders into one primary regulator, facemask or diving helmet - thanks to the Lungfish Gemini Switch block, you can change your cylinders without taking the regulator out of your mouth.
The Lungfish Gemini Dual Tank Valve is supplied with a mounting block allowing the unit to be mounted vertically or horizontally directly onto your webbing or harness. It connects to standard regulator hoses.
The Lungfish Gemini switch block is a beautiful piece of precision engineering made out of marine grade brass for durability and oxygen ready straight from the factory.
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The Lungfish Gemini Switchblock (Dual Tank Valve) is certified:
- to EN250:2014.
- CE and UKAS certified for cold water: 50m
- 14 bar test pressure
- Easy on-the-go selection between two gas cylinders
- One-hand operation
- Locking mechanism for secure usage
- Includes secure mounting bracket
- Can be mounted horizontally or vertically on a standard harness or webbing
- Connections: 2 x 9/16" - Male Inlets (standard regulator fitting)
- Connections: 1 x 3/8" Female outlet (standard low-pressure hose fitting)
- Weight: 390g for the switch block and 139g for the mounting bracket
- Oxygen use ready from the factory
We offer free tracked UK standard delivery on orders over £50. We are also offering extended returns until Jan the 31st just in case that Xmas present isn't quite right :)
Standard UK delivery and Next Business Day UK delivery rates are calculated at checkout and offers a number of courier options for maximum convenience to you.
International shipping rates depend on items, shipment weight and destination. Shipping costs are calculated at checkout.
Estimated delivery times are shown during checkout and reflect your chosen delivery method.
If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!
Mike's Dive Store offer an extended returns policy of 30 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back, and we will either exchange it or offer a full refund less any postage costs. Too easy!
Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee, but we will let you know about these items before we 'special order' them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return.