DGX Air Spool w/ Viton O-Rings for SPG Swivel

$1.50
In Stock
SKU
DX-709030
The standard air spool with a flange in the center and compatible with most submersible pressure gauges (SPG) and high pressure SCUBA swivel hoses.

DGX Air Spool w/ Viton O-Rings for SPG Swivel

DGX Air Spool w/ Viton O-Rings
DGX Air Spool w/ Viton O-Rings Seats Between the SPG and the HP Hose Leaking SPG Spool Replacement
  • Compatible with almost every HP hose brand, material and style
  • Compatible with almost every brand SPG available today
  • Includes Nitrox Ready o-rings
  • Required installation between HP hose and SPG or Transmitter

The standard air spool with a flange in the center and compatible with most submersible pressure gauges (SPG) and high pressure SCUBA swivel hoses. The air spool is not included with hoses but we recommend replacing the air spool when replacing the hose. Nitrox Ready, the airspool includes two oxygen compatible #003 viton o-rings.

More Information
Brand DGX
SKU DX-709030
Weight 0.050000

High Pressure Swivel Spindles aka 'Air Spools'

Air Spools Comparison

All high pressure SCUBA hoses use an air spool, consisting of a spindle with two tiny o-rings, to mate the swivel connector on the hose to the fitting on the submersible pressure gauge (SPG). The air spool helps to form the seal between the SPG and HP hose and assists in controlling the pressure as it flows to the SPG from the first stage.

The appropriate air spool is typically included the SPG, not with the high pressure SCUBA hose. The shoulder spindle has a flange in the center and is by far the most common, compatible with most SPG's including all those sold by Dive Gear Express. However, a few SPGs (typically the inexpensive plastic body versions) may only accept a straight spindle without a shoulder. Some older 'classic' equipment may use a longer thinner bullet nose spindle. Devices that are normally screwed directly to the high-pressure port of the regulator instead of a hose, such as button gauges and wireless transmitters, do not need an air spool or may require unique versions.

If the o-rings on the spindle are worn the hose will have a small leak at the swivel. Even when an o-ring has failed completely or the spool is omitted entirely, a tiny flow restriction present in the high pressure port of the regulator and/or the male hose fitting will cause a leak to be much slower than expected. It is possible to just replace the #003 size o-rings on the spindle rather than replacing the entire assembly. However, with older spindles the ends sometimes break off entirely when trying to remove or replace the o-ring.

We recommend replacing the air spool, or at least the spool o-rings, whenever replacing the hose. If reusing the spool from the previous hose and don't see it, it is probably lodged in the end of the previous hose or in the end of the SPG. See our video on Leaking SPG Spool Replacement.