Qwik-Freezer

allows repairs or modifications to be made without draining down or shutting off systems. 



 

Qwik-Freezer equipment utilizes liquid carbon dioxide (CO2) to freeze stationary water in selected sections of pipe or tubing. By producing very low "dry ice" temperatures, Qwik-Freezer forms a secure in-line ice plug. This temporarily isolates the water in the system and allows repairs or modifications to be made without draining down or shutting off systems. 

The Qwik-Freezer kit is easy to use. A specially designed jacket is wrapped around the pipe at the point where the freeze is required. A nozzle on the jacket is then coupled to a cylinder of liquid CO2 by means of a high pressure hose. When the liquid CO2 is injected into the space between the jacket and pipe, it immediately expands to form a solid carbon dioxide (dry ice) at a temperature of -109ºF (-78ºC). This low temperature quickly freezes the contents forming a secure "ice plug" which seals the pipe.

The "ice plug forms only in a section of pipe covered by the jacket so the resulting rise in pressure is very small and there is no damage to the pipe. The technique can be used safely on iron, lead, stainless steel, copper, brass and plastic pipe.

Major Advantages

  • Saves valuable time normally lost in draining down and refilling a system.
  • Avoids complete shutdown of systems and equipment  (as in a sprinkler or water supply system)
  • Prevents waste of large amounts of water.
  • Eliminates handling of waste water.
  • Safe and cost effective.

FOR USE IN MANY INDUSTRIES Qfpg22.gif (24219 bytes)

  • Office & Commercial Buildings
  • Petro/ Chemical Refineries
  • Food & Beverage Plants.
  • Municipalities.
  • Hospitals/Nursing Homes
  • Industrial Plants
  • Water Treatment Facilities
  • Conventional & Nuclear Power Plants
  • Residential
  • Restaurants
  • Ships
  • Schools/Universities
  • Hotels/Motels
  • Water Utilities
  • Aerospace.

The water is brought to a static condition. The Qwik-Freezer jacket (orange) is then wrapped around the pipe, Jacket# 1, at a nearby upstream location. Injecting liquid CO2 into the jacket rapidly freezes the water in the pipe, permitting valve removal for servicing or replacement. Jacket #2 shows the position of a second Qwik-Freezer jacket and tank used when a double freeze is required to block flow on both sides of the valve.

Standard Equipment

Qwik-Freezer kits consist of insulating pipe jackets, CO2 cylinder(s), reinforced high pressure hose, fittings, insulated work gloves, a rubber mallet, safety glasses, operating manual, timing log and carrying.

CO2 CYLINDER

COB provides specially adapted liquid CO2 cylinders for use with Qwik-Freezer equipment. The QFAL20, a 20 pound aluminum cylinder with protective handle, is supplied with 3/8" to 3" kits. A 50 pound aluminum cylinder, QFAL50, is supplied with 4"-8" kits as standard equipment. CO2 cylinders can be refilled by local welding and carbonic distributors.


 

Qwik-Freezer Jackets

  • QF101 for 3/8" (9.375 mm.) to 3/4" (18.75 mm.) Pipe size.
  • QF 102 for 3/4" (18.75 mm.) to 1-1/2" (37.5 mm.) Pipe size.
  • QF103 for 1-1/2" (37.5 mm.) to 3" (75 mm.) Pipe size.
  • QF104 for 3-1/2" (87.5 mm.) to 4" (100 mm.) Pipe size.
  • QF106 for 5" (125 mm.) to 6" (150 mm.) Pipe size.
  • QF108 for 7" (175" (175 mm.) to 8" (200mm.) Pipe size.

 

3/8" to 3" PIPE FREEZING KITS*

Kit No. QF 101 QF 102 QF 103 QF 800 QFAL 20 QF 801
  8" (203mm.) Jacket 12" (305 mm.) Jacket 14" (356mm.) Jacket Hose (10ft.) 20lbs CO2 Cylinder Valve Adapter
QF 1500 1 1 - 1 1 1
3/8" (9.375mm.) - 1-1/2" (37.5 mm.) pipe            
QF 2000 - 1 - 1 1 1
3/4" (18.75 mm.) - 1-1/2" (37.5mm.) pipe            
QF 2200 - 2 - 2 2 2
3/4" (18.75 mm.) - 1-1/2" (37.5 mm.) pipe            
QF 3000 1 1 1 2 2 2
3/8" (9.375 mm.) - 3" (75mm.) pipe            

*All the above kits contain the following standard accessories: gloves, rubber mallet, timing log, safety glasses, operating manual, and carrying case. Individual items (jackets, etc.) may also be ordered separately.

Kit No. QF 101 8"Jkt. (203mm.) QF 102 12"jkt (305mm.) QF 103 14"jkt (356mm.) QF 104 20" jkt (508mm.) QF 106 (711mm.) QF 108 33"jkt (838mm.) QF 800B Hose (16ft.) QF 801 Valve Adapter QF 802 T Connector QF 815 Timing Board QFAL50 50lb CO2 Cylinder
QF 4000 3/8"-4"pipe 1 1 1 1 - - 4 2 2 1 2
QF 4100 3"-4"pipe - - - 1 - - 4 2 2 1 2
QF 6000 3/8"-6"pipe 1 1 1 1 1 - 4 4 2 1 6
QF 6100 5"-6"pipe - - - - 1 - 3 4 2 1 6
QF 8000 3/8"-8"pipe 1 1 1 1 1 1 4 4 2 1 12
QF 8100 7"-8"pipe - - - - - 1 4 4 2 1 12

Kit contents

 

QWIK-FREEZER
3/8 INCH TO 3 INCH KITS

COB.QF 1500 - Kit for pipe 3/8" to 1-1/2 " I.D.
Kit contains:
1- QF 101 Jacket 1- Pair of Insulated Gloves
1- QF 102 Jacket 1- Rubber Mallet
1- 10' High Pressure Hose 1- Small Carrying Case
1- Valve Adapter 1- 20lb. CO2 Aluminum Cylinder
1- Pair Safety Glasses 1- Timing Pad
(approximate kit weight - 36 lbs.)


COB.QF 1700 - Kit for Double Freeze Kit 3/8" to 1 1/2"
Kit contains:
2- QF 101 Jacket 1- Pair of Insulated Gloves
2- QF 102 Jacket 1- Rubber Mallet
2- 10' High Pressure Hose 1- Small Carrying Case
2- Valve Adapter 2- 20lb. CO2 Aluminum Cylinder
1- Pair Safety Glasses 1- Timing Pad
(approximate kit weight - 70 lbs.)

COB.QF 2000 - Kit for pipe 3/4" to 1 1/2" I.D.
Kit contains:
1- QF 102 Jacket 1- Pair of Insulated Gloves
1- 10' High Pressure Hose 1- Rubber Mallet
1- Valve Adapter 1- Small Carrying Case
1- Pair Safety Glasses 1- 20lb. CO2 Aluminum Cylinder
1- Timing Pad
(approximate kit weight - 35 lbs.)


COB.QF 2200 - Kit for Double Freeze 3/4" to 1 1/2" I.D.
Kit contains:
2- QF 102 Jacket 1- Pair of Insulated Gloves
2- 10' High Pressure Hose 1- Rubber Mallet
2- Valve Adapter 1- Small Carrying Case
1- Pair Safety Glasses 2- 20lb. CO2 Aluminum Cylinder
1- Timing Pad
(approximate kit weight - 64 lbs.)


COB.QF 3000 - Kit for pipe 3/8" to 3" I.D.
Kit contains:
1- QF 101 Jacket 1- Pair of Insulated Gloves
1- QF 102 Jacket 1- Rubber Mallet
1- QF 103 Jacket 1- Small Carrying Case
2- 10' High Pressure Hose 2- 20lb. CO2 Aluminum Cylinder
2- Valve Adapter 1- Timing Pad
1- Pair Safety Glasses
(approximate kit weight - 64 lbs.)


3/8 INCH TO 4 INCH KITS

COB.QF 3200 - Kit for Double Freeze 3/8" to 3" I.D.
Kit contains:
2- QF 101 Jacket 1- Pair of Insulated Gloves
2- QF 102 Jacket 1- Rubber Mallet
2- QF 103 Jacket 2- Large Carrying Case
4- 10' High Pressure Hose 4- 20lb. CO2 Aluminum Cylinder
4- Valve Adapter 1- Timing Pad
1- Pair Safety Glasses
(approximate kit weight - 72 lbs.)


COB.QF 4000 - Kit for pipe 3/8" to 4" I.D.
Kit contains:
1- QF 101 Jacket 1- Pair of Insulated Gloves
1- QF 102 Jacket 1- Rubber Mallet
1- QF 103 Jacket 1- Small Carrying Case
1- QF 104 Jacket 2- 50lb. CO2 Aluminum Cylinder
4- 10' High Pressure Hose 1- Timing Board and Pads
2- Valve Adapter 1- Pair Safety Glasses
2- Tee Connectors
(approximate kit weight -126 lbs.)


COB.QF 4100 - Kit for pipe 3" to 4" I.D.
Kit contains:
1- QF 104 Jacket 1- Rubber Mallet
4- 10' High Pressure Hose 1- Large Carrying Case
2- Valve Adapter 2- 50lb. CO2 Aluminum Cylinder
2- Tee Connectors 1- Timing Board and Pads
1- Pair of Insulated Gloves 1- Pair Safety Glasses
(approximate kit weight -125 lbs.)


COB.QF 4200 - Kit for Double Freeze 3/8" to 4" I.D.
Kit contains:
2- QF 101 Jacket 2- Pair of Insulated Gloves
2- QF 102 Jacket 2- Rubber Mallet
2- QF 103 Jacket 2- Large Carrying Case
2- QF 104 Jacket 4-50lb. CO2 Aluminum Cylinder
8- 10' High Pressure Hose 1- Timing Board and Pads
4- Valve Adapter 2- Pair Safety Glasses
4- Tee Connectors
(approximate kit weight - 248 lbs.)


3/8 INCH TO 6 INCH KITS

COB.QF 4250 -Kit for Double Freeze 3" to 4" I.D.
Kit contains:
2- QF 104 Jacket 2- Rubber Mallet
8- 10' High Pressure Hose 2- Large Carrying Case
4- Valve Adapter 4- 50lb. CO2 Aluminum Cylinder
4- Tee Connectors 1- Timing Board and Pads
2- Pair of Insulated Gloves 2- Pair Safety Glasses
(approximate kit weight - 250 lbs.)


COB.QF 6000 - Kit for pipe 3/8" to 6" I.D.
Kit contains:
1- QF 101 Jacket 3- Tee Connectors
1- QF 102 Jacket 2- Pair of Insulated Gloves
1- QF 103 Jacket 1- Rubber Mallet
1- QF 104 Jacket 1- Large Carrying Case
1- QF 106 Jacket 6- 50lb. CO2 Aluminum Cylinder
4- 16' High Pressure Hose 1- Timing Board and Pads
3- Valve Adapter 2- Pair Safety Glasses
(approximate kit weight - 350 lbs.)


COB.QF 6100 - Kit for pipe 5" to 6" I.D.
Kit contains:
1- QF 106 Jacket 1- Rubber Mallet
3- 16' High Pressure Hose 1- Large Carrying Case
3- Valve Adapter 6- 50lb. CO2 Aluminum Cylinder
3- Tee Connectors 1- Timing Board and Pads
2- Pair of Insulated Gloves 2- Pair Safety Glasses
(approximate kit weight - 350 lbs.)


COB.QF 6200 - Kit for Double Freeze 3/8" to 6" I.D.
Kit contains:
2- QF 101 Jacket 6- Tee Connectors
2- QF 102 Jacket 2- Pair of Insulated Gloves
2- QF 103 Jacket 2- Rubber Mallet
2- QF 104 Jacket 2- Large Carrying Cases
2- QF 106 Jacket 12- 50lb. CO2 Aluminum Cylinder
8- 16' High Pressure Hose 1- Timing Board and Pads
6- Valve Adapter 2- Pair Safety Glasses
(approximate kit weight - 680 lbs.)


3/8” TO 8 INCH KITS

COB.QF 6250 - Kit for Double Freeze 5" to 6" I.D.
Kit contains:
2- QF 106 Jacket 2- Rubber Mallet
6- 16' High Pressure Hose 2- Large Carrying Case
6- Valve Adapter 12- 50lb. CO2 Aluminum Cylinder
6- Tee Connectors 1- Timing Board and Pads
2- Pair of Insulated Gloves 2- Pair Safety Glasses
(approximate kit weight - 660 lbs.)


COB.QF 8000 - Kit for pipe 3/8" to 8" I.D.
Kit contains:
1- QF 101 Jacket 4- Tee Connectors
1- QF 102 Jacket 2- Pair of Insulated Gloves
1- QF 103 Jacket 1- Rubber Mallet
1- QF 104 Jacket 2- Large Carrying Case
1- QF 106 Jacket 12- 50lb. CO2 Aluminum Cylinder
1- QF 108 Jacket 1- Timing Board and Pads
4- 16' High Pressure Hose 2- Pair Safety Glasses
4- Valve Adapter
(approximate kit weight - 680 lbs.)


COB.QF 8100 - Kit for pipe 7" to 8" I.D.
Kit contains:
1- QF 108 Jacket 1- Rubber Mallet
4- 16' High Pressure Hose 2- Large Carrying Case
4- Valve Adapter 12- 50lb. CO2 Aluminum Cylinder
4- Tee Connectors 1- Timing Board and Pads
2- Pair of Insulated Gloves 2- Pair Safety Glasses
(approximate kit weight - 674 lbs.)


COB.QF 8200 - Kit for pipe 3/8" to 8" I.D.
Kit contains:
2- QF 101 Jacket 8- Tee Connectors
2- QF 102 Jacket 2- Pair of Insulated Gloves
2- QF 103 Jacket 2- Rubber Mallet
2- QF 104 Jacket 2- Large Carrying Case
2- QF 106 Jacket 24- 50lb. CO2 Aluminum Cylinder
2- QF 108 Jacket 2- Timing Board and Pads
8- 16' High Pressure Hose 2- Pair Safety Glasses
8- Valve Adapter
(approximate kit weight - 1360 lbs.)


 

*All of the above kits contain the following standard accessories: gloves, rubber mallet, safety glasses, operating manual and carrying case. Individual items (jackets, etc.) may also be ordered separately to suit your job requirements. Refer to the price list for complete parts listing.


 

8" (203mm.) Pipe Freezing Kits

For Freezing pipes larger than 8" (203mm.) I.D. and special jobs on smaller pipe lines call our trained engineers to discuss your specific application.

 

 


 

Technical Information

3/8" to 3" FREEZING TABLE

Pipe Jacket QF 101 8 inches QF 102 12 inches QF 103 14 inches
Pipe Size 1/2" (12.5mm.) 3/4" (18.75mm.) 1" (25mm.) 1-1/2" (27.5mm.) 2" (50mm.) 3" (75mm.)
No. of Injections 2 2 3 4 3 6
Injection Time 1 min. 1 min. 1 min. 1 min. 5 min. 5 min.
Waiting Time 3 min. 3 min. 5 min. 5 min. 5 min. 5 min.
Total Time Required 8 min. 8 min. 18 min. 24 min. 30 min. 60 min.
Approx. CO2 Required 1 lb. 1 lb. 3 lbs. 6 lbs. 18 lbs. 36 lbs.

4" to 8" FREEZING TABLE

Pipe Jacket QF 104 20 inches QF 106 28 inches QF 108 33 inches
Pipe Size 3" (75mm.) 4" (100mm.) 5" (125mm.) 6" (150mm.) 7" (175mm.) 8" (203mm.)
No. of Injections 6 7 9 11 15 17
Injection Time 6 min. 8 min. 12 min. 12 min. 12 min. 12 min.
Waiting Time 8 min. 10 min. 8 min. 8 min. 8 min. 8 min.
Total Time Required 84 min. 126 min. 190 min. 220 min. 310 min. 340 min.
Approx. CO2 Required 42 lbs. 65 lbs. 243 lbs. 297 lbs. 405 lbs. 475 lbs.

*NOTE: The above tables are for typical freezing of static water at 68ºF in Schedule 40 steel pipe. Higher temperatures will require additional injection and waiting periods. Plastic pipe will take up to 3 times longer. Refer to Operating Manual for detailed instructions.

For freezing applications on pipes larger than *" (203mm.) I.D. please contact Newman Tools industries, Inc. for more Information.

OPERATING INSTRUCTIONS FOR QWIK-FREEZER® EQUIPMENT

Set-up Preparations

  • Be sure there is enough liquid CO2 on hand for the job.
  • Be sure there is no flow of water through pipe.
  • Connect hose to nozzle on jacket and to cylinder.
  • Fit the jacket around the pipe. Always keep the jacket at least 16" (406mm.) or more from the point of repair if a torch is to be used and 24" (609 mm.) or more from the nearest closed connection.

Beginning the Freeze

  • Open cylinder valve fully and inject liquid CO2 (for times see table).
  • During the freeze period distribute the dry ice around the pipe by pressing the jacket firmly or tapping the jacket with the rubber mallet supplied with kit. Wear gloves & safety glasses.

Proceeding with Repair

  • Frost forms on the outside of the pipe near the edges of the jacket when the contents are frozen. The pipe is now sealed by the ice plug and repairs an be carried out.
  • Make an additional injection every 15 minutes. This procedure will maintain the freeze for as long as required, extra cylinders required.
  • Upon finishing repair, remove jacket and allow pipe to thaw naturally. Do not use a torch. The water system should return to normal in a matter of minutes.

CO2 Cylinder

The QFAL 20 cylinder weighs 29 pounds empty and 49 pounds full. When full, it contains 18 pounds of usable liquid CO2 and 2 lbs. of residual gas. The QFAL 50 cylinder weighs 56 lbs. empty and 106 lbs. full. When full it contains 48 lbs. of usable liquid CO2 and 2 lbs. of residual gas. The residual gas cannot be used for freezing. Always weigh you cylinder before attempting a freeze to ensure that more than enough CO2 is available to do the job safely..

Safety Precautions

As CO2 is heavier than air, care should be taken to disperse CO2 in confined and low lying areas. Always provide good ventilation in the work area.

 

 

 



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