User manual
ATOMIC AQUATICS FIRST AND SECOND STAGE REGULATORS MAINTENANCE PROCEDURES • 9/2003 7
12.Yoke: removal/replacement
• Leave low pressure port cap on the regulator body (loosened) so the first stage can be held in a vice or clamp
• Unscrew the yoke knob from yoke.
• Unscrew the yoke nut with the special 1" yoke nut socket and short extension placed through yoke.
• Reassemble with same tool and torque to 33 FT.-LBS.
The filter can be replaced by removing the star shaped filter retainer. Replace with a new filter and re-
tainer. The o-ring in the bottom of the yoke retainer does not need lubrication. Fit the o-ring into the groove
and make sure it stays in place during reassembly. The first stage can be switched between yoke or 300 Bar
DIN by interchanging either the yoke retainer and yoke or the DIN retainer and handwheel.
13. DIN: removal/replacement
• Unscrew the DIN nipple with a 1/4" hex wrench from the body.
• Reassemble with same tool and torque to 33 FT.-LBS.
Beneath the o-ring at the bottom of the nipple is a small washer and the filter. Make sure all these parts
are in place during reassembly. The o-ring does not require lubrication.
14. Swivel and cap (T1x, T1, M1, B1, B2): removal/replacement
• Unscrew the cap and swivel from the body.
• Unscrew the swivel retainer from the swivel cap with a 7/32 hex wrench.
• Reassemble and torque to 130 IN.-LBS.
Use a first stage handle (Peter Built p/n 20-115-100 or 20-116-100)
to hold the cap from turning. The swivel o-rings should be lubricated generously with Christolube. Make sure
the small plastic washer is fit in place.
• Reassemble the cap and swivel subassembly to the body. Securely tighten the swivel cap with the
pin-lock spanner.
Fixed cap (Z1)
• Unscrew the cap from the body. To reinstall, thread the end of the pin lock first stage spanner into one of the
LP ports and tighten securely.
15. HP seat (refer to Service Bulletin #2 for correct seat and piston configurations)
• Unscrew the seat retainer with the first stage T-handle wrench.
• Blow air into the small hole in the back of the retainer to remove the seat.
• Replace with new seat (concave side out) and re-torque firmly.
There are 2 o-rings that seal the seat, one in the body and the second on the seat retainer. Lubricate
with Christolube sparingly. Make sure the o-ring in the body is seated in the groove before reassembly.
16. HP piston o-ring removal/replacement
• Remove the piston and spring by pulling it out of body.
• Remove the seat retainer and small seal retaining spring.
• Use the piston bullet (o-ring side first) to push the monel washer, HP piston seal or o-ring and the teflon washer
out of the body.
• Replace in reverse order, using the seal pusher tool on the first stage T-handle tool.
The piston can be removed and replaced without damage to the o-ring provided a piston bullet is used and
the following procedures are followed. The o-ring should not be removed unless it is going to be replaced.
To remove the o-ring, withdraw the piston and first stage spring. Using the brass piston bullet, push it
through the body from the piston end. The bullet will push out the teflon washer, HP piston o-ring, and
seal retaining washer.
To reinstall, clean and examine the piston seal bore carefully. It must be smooth and perfectly clean. Lubricate
the bore with Christolube. Install the HP piston o-ring, then follow with the teflon washer. Lubricate both
generously with Christolube and carefully push them into the body until you feel them snap into place, then
withdraw the tool, leaving the o-ring and teflon washer in the body. Install the seal retaining washer and seal
retaining spring.