NoTap® Branch Connections

Product Type(s) : Plumbing Products
Description :

NoTap® is a complete system for easily and economically repairing pipes and installing branch connections on pressurized lines without first having to drain the system. The NoTap method can be used for hot water, fresh (tap) water, compressed air and refrigerants (glycol and salt based solutions). It is suitable for all pipes of metal, for example: black steel, painted steel, galvanized steel, stainless steal as well as copper. Valid for both thin-walled and annealed tempered pipe. 

Branch connections on pressurized water or air pipe systems, sometimes referred to as hot taps, are done with ease using NoTap.

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FEATURES

10 GOOD REASONS TO USE NOTAP
  • No need to drain the system
  • No refilling or venting the system after work is completed
  • Easy installation as no soldering, cutting or welding is necessary
  • Can be used on all types of metal piping: black steel, painted steel, galvanized, stainless and even copper
  • Saves energy, as no hot water needs to be drained
  • Can be used for hot water, fresh water, compressed air and refrigerants (glycol and salt based solutions)
  • Eliminates problems associated with the use of heating equipment, such as welding, soldering, etc.
  • Less corrosion in the system as no fresh, oxygen-rich water is added
  • Method is environmentally friendly, as no hazardous water needs to be drained
  • No fragments from drilling operations will enter into the system
Advantages for the contractor
  • The job time is reduced considerably
  • Better profitability as more jobs can be carried out within a given time
  • Solves problems that are otherwise difficult to manage
  • Can offer customers better service and solutions
  • No need to handle chemicals when modifying cooling systems
Advantages for the property owner
  • Tenants are not disturbed during pipe work
  • Tradesmen are able to carry on with their operation despite the pipe work (dentists, hospitals, etc.)
  • Lower installation costs
  • Work can be carried out during normal business hours, eliminating the need for costly weekend or after hour work
  • Less corrosion in the water system for increased life expectancy of the system
  • Reduced risk for water damages due to faucets left open
  • Environmentally friendly
Clamp with check valve

The clamp with a check valve is used for smaller branch connections (14-125 mm), installing an immersion pipe adapter and for blocking. For branch connections, a connector is mounted on the clamp that opens the check valve. For immersion pipes an adapter is mounted, and for blocking a balloon tool is used for inserting the balloon into the pipe.

 

Technical Data for Clamp with Check Valve

Pipe dimensions: OD 14 mm-125 mm (Cu 15-DN 100)
Branch connection (outlet diameter): DN 20, (OD 14-23) mm or DN 25 (OD 24-125 mm)
Adapter for immersion pipe: OD 24 mm-125 mm (DN 20-DN 100)
Pipe blocking: OD 14 mm-60.3 mm (Cu 15-DN 50)
Flow diameter: Ø 8.4 mm (OD 14-23 mm) or 14.4 mm (OD 26-125 mm)
Max. system pressure: 16 bar / 10 bar (pipe dimension DN 65 and larger)
Max. temperature: +95°C
Min. temperature: –10°C
Type of pipes: All pipes of metal, for example: black, painted, galvanized, stainless as well as copper. NB! NOT to be used for annealed copper pipe!
Media: hot water, fresh (tap) water, compressed air and refrigerants (glycol and salt based solutions). For other applications, contact us.
Clamp material Dezincification resistant brass
Seal EPDM


Dimension Guides

A variety of different types of branch connections are available. See the NoTap Guide for tables matching the correct dimension of pipe, drill size and clamp article numbers

Clamps with check valves are always used when pipe blocking (14-60,3 mm) and even for smaller branch connections. For branch connections, use one of our connectors which have a collar that opens the check valve.

For pipes with diameter 14 – 125 mm

  • Straight or angled mini ball valve, Cu15 (G½")
  • Optional valve with G½" or R¾" pipe thread
Clamp without check valve

The clamp without a check valve is used when larger branch dimensions (26 - 335 mm) are desired for maximum flow from the branch connection. A full-flow ball valve shall always be fitted on these clamps when work is to be carried out on pressurized pipes.

Technical Data for Clamp without Check Valve

Pipe dimensions: OD 26-335 mm (DN 20-DN 300)
Branch connection (outlet diameter): DN 25, DN 40, DN 50 or DN 65
Flow diameter: Ø 19-57 mm
Max. system pressure: 16 bar / 10 bar (pipe dimension DN 150 and larger)
Max. temperature: +95°C
Min. temperature: –10°C
Type of pipes: All pipes of metal, for example: black, painted, galvanized, stainless as well as copper. NB! NOT to be used for annealed copper pipe!
Media: hot water, fresh (tap) water, compressed air and refrigerants (glycol and salt based solutions). For other applications, contact us.
Clamp material Dezincification resistant brass / stainless steel (acid-resistant stainless steel for NoTap BIG, upon request)
Seal EPDM (NBR on request)


Dimension Guides

A variety of different types of branch connections are available. See the NoTap Guide for tables matching the correct dimension of pipe, drill size and clamp article numbers.

For pipes with diameter 26 – 170 mm

  • Ball valve 1"

For pipes with diameter 54 – 165 mm

  • Ball valve 1½", delivered with Ball valve with both low and high spindle

For pipes with diameter 70 – 134 mm

  • Ball valve 2", delivered with Ball valve with both low and high spindle

For pipes with diameter 88 – 335 mm

  • Ball valve 2½", delivered with Ball valve with both low and high spindle
Theory of Operation

Branch (T-pipe) connections on pressurized water or air pipe systems are done with ease using NoTap. The part that is mounted on the pipe is called a clamp. After the clamp has been tightened to the pipe, a special bore tool is used to allow work to be carried out while the pipe is still under pressure. This eliminates the need to shut off or drain the system.

The NoTap clamp is available in two versions: with or without a check valve. The clamp with a check valve is used for smaller branch connections, installing an immersion pipe adapter and for blocking. The clamp without a check valve is used on branch connections where you want to maintain maximum flow. These clamps come in even larger dimensions than those with check valves.

The first step in making your branch connection with NoTap is to choose a clamp with the desired size outlet. Clamps are available for pipes from 14 - 335 mm OD. The outlet size varies depending on pipe size. Outlets available are 1", 1½", 2" and 2 ½".

The NoTap method combines a center drill bit with a hole saw. Once the center drill bit penetrates the pipe, a flow will start to run through the tooling and out through the flushing device. This will ensure that chips and pipe shavings are carried away from the flow inside the pipe.

Next, the hole saw will start to cut through the pipe. The hole saw will cut through the pipe and also other layers of deposits that might be coated to the inside of the pipe. Using a hole saw will ensure that a proper hole is opened in the pipe for desired flow. The threaded center drill bit drills itself into the portion of pipe that is cut out. This way the cut out portion of pipe is always retained (not lost in the pipe system).

When the hole saw has penetrated the pipe, simply retract (pull back) the drill until it stops. Then close the ball valve. Finally, unscrew the drill housing from the ball valve and make the necessary branch connection.

VIDEOS

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