Dry Valve Technology (DVT) 


DVT is a revolutionary regulator technology designed to automatically eliminate moisture and contaminants from entering your first stage, even if the dust cap is accidentally left off.


DVT eliminates corrosion of critical internal components, bacteria, hose deterioration, and damaged gauges and computers


Q: Can Your First Stage Regulator Do This?

A: Most first stage regulators are exposed to corrosive water intrusion either when removed from the cylinder valve between dives or in the rinse tank.

Q: Ever Wonder Why They Call It a "Dust Cap" and Not a "Water Cap"?

A: Most dust caps are not designed to keep water from entering your first stage. Regardless of how carefully you may maintain your regulator, water entry is a much more common problem than most divers realize. This image is just one service department's collection of corroded first stage filters removed from their customer's regulators.

Without DVT: Living With Corrosion and Restricted Airflow.

A: When water enters your first stage, critical internal seals break down and precision-machined metal parts begin to corrode. This inevitably leads to significant performance degradation and expensive repairs. Moisture also spreads throughout your breathing system, causing bacteria build-up, hose deterioration, and damage to gauges and computers.

The Solution? Oceanic DVT.

Though you should always use your dust cap to keep dust and other contaminants from entering your first stage, the extra protection of DVT means one less worry.

How Does It Work?

Open the tank valve and air is delivered through a downstream system without restriction.

When your dive is finished, before the regulator is even removed from the tank valve, the Dry Valve Technology system is already closed, sealing out moisture and any other contamination.

The filter is safely positioned behind the moisture barrier to eliminate filter flow restriction due to corrosion.


Pneumatically Balanced Valve

The pneumatically balanced second stage reduces breathing resistance to near zero with a balanced valve seat designed to respond to the slightest inhalation.

A pneumatically balanced second stage actually has (or can have) the same initial crack opening effort as a mechanically balanced, but the spring force of a pneumatically balanced second stage is lighter so it’s spring rate is also lower.

Therefore the force required to open the valve farther as flow increases is less than that required for a mechanically balanced second stage with a higher rate spring. So the total effort to breathe the pneumatically balanced second stage is indeed less.


The spring force must be just enough to overcome the difference between downstream air pressure and upstream balance chamber pressure.


The downstream air travels through a hole in the poppet into the balance chamber and applies an "upstream" force just slightly less than the downstream force.

Diver Adjustable Inhalation Effort

 A simple twist of the adjustment knob enables complete control...

Set the inhalation requirement to near zero when you need ultimate performance, or tune it for greater resistance as conditions or preferences change


Most downstream demand valve regulators are calibrated during manufacturing to a single, 'middle of the road' operation. Whether finning up current at 100+ feet or merely snorkeling out to the dive site, this factory adjustment may not be optimum for the wide variety of demands we place on our equipment.

FDX-10 Over-Balanced Diaphram FIrst Stage


The Forged from marine-grade brass, the FDX-10 features optimized air paths and angled hose ports for superior performance and comfort.

A sealed Balanced Diaphragm design, Enviro Kit and patented DVT (Dry Valve Technology) isolate all internal components from the environment. 2 high pressure and 4 low pressure ports allow convenient and comfortable hose routing.


The FDX-10 high performance over-balanced first stage provides progressively greater intermediate pressure as depth and gas density increases. The center “pads” that the diaphragms act against are different sizes so the working area of the outer environmental diaphragm is larger than the working area of the inner diaphragm. As depth increases, more pressure is applied to the larger surface area of the outer diaphragm than would be applied to the internal diaphragm. The result is superior gas delivery under the most extreme conditions.



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