Grooved pipe fitting is a newly developed type of steel pipe connection pipe fitting, also called clamp connection, which has many advantages.
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Concept definition of grooved pipe fittings:
The design specification of automatic sprinkler system proposes that the connection of system pipelines should use grooved connectors or screw thread and flange connections; pipes with a diameter equal to or greater than 100mm in the system should use flanged or grooved connectors in sections.
Grooved pipe connection technology, also known as clamp connection technology, has become the main technology for liquid and gas pipeline connections. Due to its advanced technology, it has been quickly accepted by the market and has gradually replaced flanges and welding.
The application of grooved pipe connection technology makes the complex pipe connection process simple, fast and convenient. A big step forward in plumbing technology.
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Introduction to grooved pipe fittings:
Grooved fittings can be divided into two broad categories:
'The pipe fittings that play the role of connection and sealing include grooved rigid couplings, grooved flexible couplings, mechanical tee and groove flanges;
'The pipe fittings that play the role of connection and transition include elbows, tees, crosses, reducers, end caps, etc.
Jianzhi Grooved Rigid Coupling
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The groove connection fittings that serve as both connections and sealing primarily consist of three parts: a sealing rubber ring, a clamp, and a locking bolt. The rubber sealing ring located on the inner layer is placed on the outside of the connected pipe and fits with the pre-rolled groove, and then a clamp is fastened on the outside of the rubber ring, and then fastened with two bolts. Groove connections have very reliable sealing performance due to the unique sealable structure design of the rubber sealing ring and clamp. With the increase of fluid pressure in the pipe, its sealing performance is correspondingly enhanced.
Jianzhi Grooved Pipe Fittings
Features of grooved pipe fittings:
1. The installation speed is fast. The grooved pipe fittings only need to be installed with the standard parts supplied and do not need subsequent work such as welding and galvanizing. Therefore, the installation speed is significantly faster than the threaded connection and flange connection, and the pipe can be automatically centred and aligned through the clamp. Construction efficiency can be greatly improved, and the pipeline installation period can be effectively shortened.
2. Safe and reliable. On the one hand, the grooving machine and hole opener used in the installation process are all special tools provided by the manufacturer, which can ensure the machining accuracy of the groove at the pipe end; Function, to achieve self-tightening sealing, the higher the internal pressure, the better the sealing. The nominal pressure of the fittings can be as high as 2.5MPa.
3. Easy to install. The number of bolts to be fastened for grooved pipe fittings is small, the operation is convenient, and only a wrench is required for disassembly and assembly.
4. Economy. The grooved clamp connection will not damage the galvanized layer. In addition, the pipeline does not need to be installed, galvanized and transported twice. Therefore, the installation cost is greatly reduced. Fast installation speeds can shorten construction time, enable the project to be used earlier, and generate economic benefits in advance.
5. Environmental protection. The piping and installation of grooved pipe fittings do not require welding or open flame operation. Therefore, there is no pollution, no damage to the galvanized layer inside and outside the pipe, and it will not pollute the construction site and the surrounding environment. In addition, it is conducive to fire prevention. Grooved connections reduce the transmission of noise and vibration due to the gaps between the pipe ends.
6. It is not limited by the installation site and is easy to maintain. The grooved pipe fittings can be pre-assembled first and can be adjusted arbitrarily before the bolts are locked. The piping sequence has no direction. It can be operated in a relatively compact space and place. It can be cleaned and replaced only by removing 2 joints during maintenance.
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The above is our discussion on what is grooved fittings, Jianzhi's grooved fittings are FM UL approved, have quality assurance and as a manufacturer have the cheap price and custom specifications.
We previously have introduced different types and combinations of threaded fittings - which have been around for more than a century.
Here we're introducing another common way to join pipe; using grooved fittings.
An attic sprinkler system using a grooved elbow with couplings. Use of "mechanical" couplings that could allow faster joining of pipe came to life in by Lieutenant Ernest Tribe. Just a few years later the Victory Pipe Joint Company renamed itself to Victaulic (a combination of "victory" and "hydraulic"), and grew to expand the technology worldwide.
Today, Victaulic and other manufacturing leaders provide grooved fittings that are often used for pipes in fire sprinkler systems. It is not uncommon for both mains and branch lines to be grooved today.
What are common grooved fittings, and how do they work? Let's introduce them. An in-rack sprinkler with a branch line using (starting with the sprinkler) a groove x thread reducing elbow
'with a grooved coupling, a grooved piece of pipe, and a grooved tee (connection not shown). PIPE
Let's start with the pipe. In order to give grooved fittings an opportunity to "grip" the pipe and remain in place, they need an opportunity to resist the pressure of the water that is trying to "pull away" the pipe from the fittings which join them together. A grooved coupling about to connect two grooved-end pipes. Note the loose nut and bolt on the right-hand side, allowing the coupling to be expanded and "slip" over the pipe on the left. In order to create a groove in the pipe, steel can either be "roll groove" or "cut groove". Roll groove pipe involves pressing an indentation into the pipe near the end of the pipe. This allows a grooved fitting to slip over the end of the pipe and fit into the groove. Roll groove pipe has the advantage of not reducing the pipe thickness, so it can have more tolerance for corrosion than thinner pipe, similar pipe with threads, or pipe with cut grooves.
Pipe which is cut groove involves cutting into the pipe rather than pressing it. This cutting removes a portion of the pipe wall, making a thinner but smooth interior pipe wall. This thinner wall makes it more susceptible to corrosion, however, for pipe systems with a minor slope, the smooth inside of the pipe does not create a ridge where water can sit and corrode the pipe. Roll Grooved Pipe (top) and Cut Grooved Pipe (bottom). Note the ridge on the inside of the pipe wall for roll groove pipe, and the thinner pipe wall along the cut groove pipe. A tape measure with a "go" or "no-go" measurement to determine if the groove is within manufacturer tolerances. ELBOWS & TEES
Let's start with the basics. Elbows allow bends of 90-degrees (most common), 45-degrees, 22-1/2 degrees, and 11-1/4 degrees.
Why not every possible angle? What if I need to have a 60-degree bend because of my building?
First, it wouldn't be economical to make a fitting of every bend. Second, is that using just two 90-degree elbows back-to-back we're able to create a "swing joint" and make any angle we could want, just by changing the elevation of the pipe that's being joined. Victaulic "FireLock" Grooved Fittings;
90-Degree Elbow #001 (left), 45-Degree Elbow #003 (center), and Standard Tee #002 (right) One notable specialty with the grooved elbow is a "Drain Elbow", which has the elbow except it includes a drain outlet at the bend of the elbow. This is used all the time with fire department connections which come down a wall and need to be capable of being drained (to avoid having water-charged pipe freeze and burst). This is also called a "Drain-El" or is a Victaulic #10-DR. A wall-mounted fire department connection that is away from the riser, here showing the "Drain Elbow" with a ball drip below. The portion upstream of the check valve is intended to be dry unless the FDC is actively being used in order to avoid freezing water inside. COUPLINGS
Nice sketches, Joe, but that's not how things look in the field!
That's because unlike threaded fittings, the actual pipe joining is by a grooved coupling. The coupling has malleable iron bumps that grip the indent of one groove (pipe/fitting) and connect it to the second groove (the other pipe/fitting). A grooved coupling (here a Victaulic #009N shown). OTHER FITTINGS
There are a host of other fitting types. Grooved Reducing Tees? Yep. Less common. Less common can equate to more expensive, or at least that's what I hear from contractors familiar with all the pricing nuances.
What other grooved fittings do I often see?
Reducing fittings, which is a concentric, single-cast piece of metal that has a large groove on one end and tapers down to a smaller groove on another end. One note of caution is using these in the vertical orientation; I've heard it is much better, more stable, and stronger to use a reducing-fitting as opposed to a reducing-coupling when in a vertical orientation. One of my clients goes so far to say to not use reducing couplings at all (where the coupling itself has two different groove sizes). I wouldn't have the expertise to gauge that myself. A flange x groove reducer (left) and a grooved cap (right). There are also reducing adapters, than can accept a flange connection and convert it to a reduced groove connection.
Crosses are also available, as are caps (like the Victaulic #006 shown above on the right) which can terminate the end of a branch line. These caps even have 1-inch threaded opening options for easy auxiliary drains.
Many manufacturers have equipment and components with grooved ends that can readily attach to pipe and fittings.