Mounting the First-Stage onto the Cylinder
Valve with the Yoke Adapter (R-239)
Mounting the DIN First-Stage
in the Cylinder Valve
1. With the air outlet opening of the valve facing away
from you, release a small amount of air from the
cylinder by turning the valve hand wheel
counterclockwise to open the valve only slightly.
When air is heard exiting the valve, immediately turn
the valve hand wheel clockwise to close the valve.
This will clear out any water or debris that may be
inside the cylinder valve outlet opening.
2. Remove the dust cover from the R-239 adapter.
Next take the R-239vadapter and screw it on the DIN
threads of the first stage by turning clockwise.
3. Place the first-stage Workhorse Regulator yoke over the cylinder valve so that the inlet
fitting of the Workhorse Regulator aligns with the O-ring of the cylinder valve (be sure to
inspect the O-Ring for cracks etc.). While holding the first stage in place against the valve
O-ring, turn the Black yoke screw Knob clockwise to tighten. Ensure that the yoke screw
mates properly into the small dimple on the backside of the cylinder valve, and tighten the
yoke screw finger tight only.
4. If a submersible pressure gauge is attached to the first-stage, ensure that the gauge is
facing away from you and others. Pressurize the Workhorse Regulator by slowly turning
the cylinder valve hand wheel counterclockwise. Continue to turn the valve hand wheel
counter clockwise until it is fully open.
5. Inspect the first-stage Workhorse Regulator for leaks at just under the surface of the
water or with a soap solution. If leakage is detected, immerse the first-stage and cylinder
valve in water while pressurized to determine the source.
6. If leakage has been detected, follow the procedures for removing the Workhorse
Regulator from the cylinder valve on page 5. If air was leaking between the first-stage
Workhorse Regulator and the cylinder valve, replace or re-seat the cylinder valve O-ring
and repeat the above procedure. If leakage persists, return the cylinder and Workhorse
Regulator to an authorized OMS LLC Dealer for inspection and repair.
1. With the air outlet opening of the valve facing away
from you, release a small amount of air from the cylinder
by turning the valve hand wheel counterclockwise to
open the valve only slightly. When air is heard exiting the
valve, immediately turn the valve hand wheel clockwise
to close the valve. This will clear out any water or debris
that may be inside the threaded cylinder valve outlet
opening.
2. Remove the protective cap from the first-stage
Workhorse Regulator threaded DIN connector.
3. Position the first-stage near the cylinder valve so that
the LP hose of the primary second-stage Workhorse Regulator
2
R-239 Yoke Adapter
(Optional)
