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SF350-20 

© MMXIX Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 190625006

Reassembly of the SuperFlow® 350 Demand Regulator

 

SuperFlow® 350 Regulator

ance hole on the inlet tube. Push forward on the 

tool to stop the inlet valve stem from turning. Ad-

just the nut until the free flow stops and there is 

1/16

 inch (1.5 mm) to 

1/8

 inch (3.0 mm) of free play 

at the end of the lever.

Insert the inlet valve holding tool into 

the balance hole on the inlet tube.

6) Remove the inlet valve holder tool.

7) Put the diaphragm and cover in place, de-

pressing the cover tightly to simulate a properly 

tightened clamp.

Push down on the regulator cover to 

simulate a tightened clamp.

8) Depress the purge button in the center of the 

cover.

NOTE: (Reference, instructions following) Before 

bending the lever, double check the adjustments. 

The lever rarely requires bending. Usually levers 

require bending only when improperly serviced, 

or if damaged during disassembly.

9) There must be 

1/16

 inch (1.5 mm) to 

1/8

 inch (3.0 

mm) of free travel before the purge button actu-

ates, resulting in a slight flow of gas. If a slight 

flow  of  gas  develops  with  the  purge  button  de-

pressed less than 

1/16

 inch (1.5 mm), the lever will 

require bending down.

If the purge button travels further than a 

1/8

 inch 

(3.0 mm) before gas flow starts, the lever will re-

quire bending upward. 

Test the response of the purge button.

10) To bend the lever up, remove the lever and 

carefully place it in a vice. Grip the lever from 

the side with a pair of long nosed pliers and bend 

the roller end up with your finger. Bend it only a 

small amount at a time.

NOTE: Be very careful to not place undue stress 

on the lower legs of the lever as this will disfigure 

the feet and cause spongy operation.

11) To bend the lever down, place the disk end of 

the KMDSI 

1/4

 inch wrench onto the flat area of 

the adjustment tube within the regulator, sliding 

the disk as far as possible under the lever. With 

your finger, slightly bend the lever down over the 

disk to the desired height. Be careful not to bend 

the lever too far! Bend it slightly then check it.

Summary of Contents for SuperFlow 350 Regulator

Page 1: ...emand Regulator Removal from Helmet or Mask SF350 9 1 4 SuperFlow 350 Regulator Disassembly SF350 11 1 5 Inspection of SuperFlow 350 Demand Regulator Parts SF350 12 1 6 Cleaning SuperFlow 350 Regulato...

Page 2: ...3 Remove the microphone from the oral nasal mask then remove the oral nasal mask from the helmet 4 Remove the oral nasal valve and body Remove the microphone so you can remove the oral nasal mask 5 U...

Page 3: ...See 1 3 General Cleaning Inspec tion Procedures on page GENPRE 4 for detailed sanitization instructions 1 1 3 Post Dive Reassembly 1 Wipe clean the surfaces where the parts will fit make sure all part...

Page 4: ...lmet is not maintained or adjusted properly The demand regulator must receive regular maintenance to assure the best performance possible However in the event the demand regulator is damaged there is...

Page 5: ...n travels less than 1 16 or greater than 1 8 before free flow is heard the de mand regulator requires internal adjustment per 1 7 1 Tuning the SuperFlow 350 Regulator on page SF350 19 1 2 3 Inspection...

Page 6: ...the retaining clamp surfaces 1 2 4 SuperFlow 350 Demand Regulator Bias Adjustment Servicing Demand Regulator on the Helmet NOTE This procedure should be used when re placing the O ring on the adjustm...

Page 7: ...the wood block allowing the roll pin to be driven into the hole 5 Remove the adjustment knob the washer and O ring NOTE If the spacer and the spring set are stuck this could indicate corrosion or pos...

Page 8: ...et valve holder from the regulator tool kit to accurately align these holes Using a small hammer drive the retaining pin back into place until it is flush with the sur face of the adjustment knob 5 Sc...

Page 9: ...50 Regulator Disassembly Tools required 1 4 inch Flat Blade Screwdriver on Torque Wrench 7 8 inch Open end Attachment on Torque Wrench 3 4 inch Open end Attachment on Torque Wrench 3 32 inch Punch 7 8...

Page 10: ...the retaining pin to be driven into the hole 8 Remove the inlet nipple from the regulator body The O ring should be replaced if a sched uled overhaul is being performed 9 Place the castle wrench in t...

Page 11: ...g on adjustment shaft washer on the adjustment shaft A rebuild kit is available for replacement parts Part 525 309 or order the Soft Goods Kit appropriate for your model helmet mask If any parts show...

Page 12: ...a of the inlet valve assembly then using a clean cloth wipe all excess silicone from the valve assembly It will take approximately 12 hours for full cure of the silicone NOTE After the silicone has co...

Page 13: ...with hard metal components could scratch the plated surfaces Use care not to scratch the metal surfaces with the end of the tube brush Use a soft nylon brush on all other surfaces After cleaning rins...

Page 14: ...ere with the operation of the ex haust valve 3 Install the new exhaust valve into the regu lator and trim off any excess stem that may in terfere with the movement of the lever or inlet valve The exha...

Page 15: ...e screws that secure them There is also a good possibility that the clamp will come off of the whisker reducing the effectiveness of the exhaust system in keeping the breathing system dry B WARNING If...

Page 16: ...er In stall the piston spring set and spacer into the adjustment tube of the regulator body sequence as shown in the blow apart drawing 11 For the adjustment shaft lightly lubricate the new O ring the...

Page 17: ...n or marks made when the parts were dis assembled B WARNING The exhaust valve inserts must be installed in the correct orientation in the Tri Quad Valve exhaust main body If the inserts are installed...

Page 18: ...rboard whiskers should align with the whisker covering the main body so that the parting lines are in alignment except in the SL 27 helmet where the parting lines on the bottom of the whiskers should...

Page 19: ...ide block see Torque Specs on page APNDX 19 for correct torque 27 Attach the whisker to each side of the face port retainer using the screws zinc anodes or kidney plates and spacers use Loctite 222 Us...

Page 20: ...assembly 9 There must be 1 16 inch 1 5 mm to 1 8 inch 3 0 mm of free travel before the purge button actu ates resulting in a slight flow of gas If a slight flow of gas develops with the purge button d...

Page 21: ...ure Demand Reg ulator Test for Correct Adjustment Fully Assembled If adjustment is necessary after completing the demand regulator test 1 2 4 SuperFlow 350 Demand Regulator Bias Adjustment Servicing D...

Page 22: ...ockwise to remove lever play and Out counterclockwise to increase lever play Only turn the adjustment nut 1 8 turn at a time Depress the lever momentarily after each adjust ment and observe the lever...

Page 23: ...sure that it is removed without any valve mate rial left inside the regulator NOTE Before installing the new exhaust valve ensure the spokes holding the valve are smooth even and not bent The exhaust...

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