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Understanding The Origin, The Function and Styles of V-Band Clamp

The Origin of V-Band Clamp

Herbert “Zeppo” Marx is an actor, the youngest of the Marx brothers, often played straight man character,approximately enraged that he could not be funny, he left the team after only  5 movies to became an theatrical agent with older brother Gummo in running a skilled agency. 

Zeppo also was inventor and engineer, developing Marman Products Business, Inc. of Inglewood, California as company owner. After founding Marman Products in 1941 which made these clamping devices, he posessed three licenses, two of them is relatived with his development of a watch that pay close attention to the pulse of heart individuals. This achievement made Zeppo a multimillionaire.



The significance of V-Band Clamp

The v-band clamps barely attract people attention, but it is a very meaningful existence. It has been used in everything from ordinary trams to space vehicles. And even played a major role in ending World War II as it held the atomic bomb in transport aboard the Enola Gay bomber.


Why use v-band clamps

With the arrival of every custom exhaust project, head, muffler, tube size, and metal type are all choices that can have a huge impact on the final product. One of the most often overlooked aspects of a good exhaust system design is how to choose to connect all the components together. These connections must be strong enough to keep the exhaust system operating properly, and more importantly, allow you to disassemble your system to service or repair other systems on your vehicle, they have been perfect choice for any exhaust system.

The V-Band Clamp Kit consists of 3 individual parts used to make one coupling: V-Band Clamp、Male V-Band Flange、Female V-Band Flange. From the cross-section of the flange joint, we can see how the wedged part between the flanges is formed in the leak-proof seal. The toughness of the coupling part is determined by the thickness of the retainer, the form of the flange and the product. Since the torque is related to the nut of the coupling, the retainer exerts an inward radial pressure to press the flanges against each other. Unlike bolted flanges, the retainer uses a uniform and equivalent closing force throughout the flange area and after tightening. Once tightened, the friction between the flange and the clamping band helps to reduce the bolt and clamping force. These clamp straps can be used to connect basically any flange together. The usual applications range from light to strong, including diesel engines, turbochargers, pumps, filter containers, oil pipes and many other flanges.

The styles of v-band clamp

One of the most critical aspects of choosing a v-band clamp is the latch design for the coupling device. There are many lock designs available at any time, each promoting a specific need. Before choosing a lock design, users need to understand how often this combination is eliminated and reassembled, as well as the pressure on the application. FANOVO supplys superior stainless steel v-band clamp to make your selection painlessly.


T-Bolt with Trunnion — The T-bolt with trunnion latch is desirable for these applications that the v-band clamps are fixed most of time. The bolt can be straight and bent. Any size of coupling can be serviced by this style clamp.

T-bolt quick release —  If the clamps are need to be opened often, this T-bolt quick release lock can be quickly opened by loosening the nut or raising the pivoted latch. They also can be used for any size coupling and allow the operator to change the T-bolt if needed.

How to install v-band clamp

  • Each flange needs to be placed at the end of the tube you want to connect, and the tube end seat inserted into the flange step.
  • Welding 360-degree welds to prevent exhaust gas from escaping. Pay attention to your temperature  to avoid warping the flange. The flanges can be welded with MIG or TIG, but TIG is preferred for more thermal control and therefore the possibility of warping is minimized.
  • The two tubes are then joined together and the convex and concave flanges are interlocked and secured using the provided clamp.
  • It is always recommended to use an anti-stick lubricant on the fasteners on the exhaust system.It is well known that the thermal effects of hot exhaust components produce brittle and dry fasteners that quickly fail when rotated.
  • Before fully soldering, be sure to simulate the system in case your design needs to change.

Tips for installation

  • Before installation, be sure to minimize gaps and deviations, and align the exhaust components.
  • Do not try to use the clamp alone to align the object, please ask others for assistance.
  • Make sure that all required seals or gaskets are in place.
  • Ensure that the self-locking nut can still be used and maintain its locking ability, otherwise replace them.
  • While tightening the exhaust mounting fasteners (liner, bracket, hanger, etc.), position the clamp evenly around its circumference.
  • If possible, tap around the circumference with a soft mallet when tightening to help secure the clamp.
  • More torque is not better and can cause clamp deformation and shorten service life.
  • In marine or saltwater environments, please make sure to include a v-bend clamp in your aircraft/engine cleaning and enhancement inspection procedures.


Here are different sizes and styles V-band clamp available at FANOVO, please visit our website to find the suitable one for your applications.