What is a K valve?
What is a K valve?
“K” valves are the simplest of all valves, and are found on most modern cylinders. These valves fit regulators with yoke attachments. The o-ring on a “K” valve is expanded by air pressure, and this expansion creates the seal between the regulator and valve.
What is the difference between DIN valves and yoke valves?
First, what is the difference between them? The yoke is a clamp-type mounting, which is placed over the tank valve and then tightened into place. The DIN is a threaded valve, wherein you screw the regulator into the tank valve. On the DIN, it is placed on the regulator first stage.
Is DIN or yoke better?
Within the technical diving community, DIN is the standard as it is considered much safer. If technical diving is on the cards for you, it’s worth future proofing your regulator purchase by going straight for a DIN rather than purchasing a yoke and then wanting to change it later on.
Does a DIN valve have an o-ring?
DIN regulators have the o-ring incorporated into the regulator instead of the tank valve. The location of the o-ring in the DIN system is superior.
What does DIN stand for scuba?
DIN (short for the Deutsches Institut Für Normung) is a German-standard setting that is rapidly increasing in popularity. It is more widely used outside the US and is indispensable for technical and deep divers for its ability to withstand higher maximum pressures of air (over 3000 psi).
What are the two basic parts of a regulator called?
In it’s most basic form, a scuba regulator consists of two parts: a mechanism that accomplishes the first stage of pressure reduction (called first stage) and a mechanism that accomplishes the second stage of pressure reduction (called second stage).
Where are DIN valves used?
tanks
DIN valves are used on tanks with services pressures over 3000 psi. As you may have guessed, these specialized DIN valves use DIN attachments to connect to regulators. You can tell a DIN valve just by looking at it as its hole connection is wider and doesn’t have an O-ring on it.
Can you convert yoke to din?
Use the ScubaPro “300 bar” DIN to convert your first stage from a Yoke valve to a DIN valve. This is a necessary piece of equipment for divers who want to switch between regular pressure (3000psi) to high pressure (over 3300psi) tanks.
How many feet should I stay within my dive flag?
Stay within 300 feet (90 meters) of the diver down flag or buoy in open water and 100 feet (30 meters) when diving in rivers, inlets or navigation channels. Aim to surface within 150 feet (45 meters) of the dive flag.
How close should a diver stay to the dive flag?
Vessels must remain at least 50 feet away from the flag. If they have to approach the diving area, operators must have permission from the person who placed the flag or the boat displaying the flag. Outside of 50 feet, vessel operators must operate at “idle speed” out to a distance of 150 feet.
What are DIN valves made of?
Specifications
| Material | Valve Body: Chromed Brass, Seat: Teflon Coated |
|---|---|
| Type (Yoke, Din, Convertible) | DIN |
| Nitrox Ready | No, Air Use Only |
| Thread Size | 7/8-14 UNF |
What is first and second stage regulator?
The first stage regulator is the part of the regulator assembly that attaches to the cylinder. The second stage regulator is the device that you breathe from. The purpose of the second stage is to further reduce the pressure of the gas you are going to breathe to equal the surrounding pressure.
What is the difference between tank valves and DIN regulators?
Tank valves designed for use with yoke regulators have the o-ring in the tank valve. DIN regulators have the o-ring incorporated into the regulator instead of the tank valve. The location of the o-ring in the DIN system is superior. O-rings have been known to extrude from around a yoke regulator attachment while it is in place and pressurized.
What are the advantages of a DIN valve?
The greater pressure capacity can reduce the risk of a rupture in case of overfilling when the tanks are attached to a compressor. Sine the O-ring in a DIN is in the regulator, rather than on the exterior of the valve as in the yoke, it’s less likely to be lost or damaged during transport.
What is the difference between a yoke valve and a DIN valve?
The German agency chose DIN for its higher pressure capacity, which comes in handy for industrial use and commercial diving. Whereas a yoke valve is generally only approved to a maximum working capacity of 200 bars, a DIN valve can be set up to handle up to 300 bars.
When was the DIN valve invented?
However, the DIN valve was actually invented in the U.S. In the late 1950s, American diving manufacturer Poseidon launched what they named their “⅝-inch Threaded Connection.” But it didn’t enjoy much public support and the yoke valve became the standard for scuba diving.
