A piston strikes a knocker`s boby a base by the force of a compressed air. It is the instrument which prevents adhesion and a blockade of a bulk material by the impact force Moreover, it can be used only by air supply and excels in safety and economical efficiency. It is effective in a bulk material with the characteristic which will adhere to if a vibration is given.

Impact force adjustable

	A central blue part is「mushroom　valve」

A impact force can be changed only by changing the pressure of supply air. Moreover, there is effectiveness also in a reduction of noise. Even when the mistake of model selection occurs, it can solve by conditioning of a impact force, so larger model selection is appreciated with relief.

Relay piping

Relay piping function in which two or more sets can be operated at the same time by one set of a control panel. Air controller AOC of one set can use to three sets of knockers. The exclusive control panel for knockers can be used two or more sets similarly. Number of a control panel can be reduced in the whole facilities, save the equipment cost by introduction of a relay piping.
※Please refer to the「Flow aid equipment combination」

	Automatic control can be performed by attaching a solenoid valve before on air operation controller.(air supply-side)

Relay knocker's operation principle

(1) The compressed air which flowed in into the knocker is first supplied to a valve chamber, depresses a valve, and is stored in an accumulator.
(2) If a three way valve is operated and the air in a valve chamber is exhausted, the compressed air in an accumulator will move a mushuroom valve upwards.
(3) If a mushroom valve moves, the compressed air in an accumulator will strike a push-down piston.

Environment-friendly by oil free

Lubricant is not required.Oil mist may not come out, it is the best for the work environment in a factory. Lubricator is unnecessary to supply equipment of air, and the merit of cost reduction is in it.

Simple structure & high durability

Clear in 1million times of the stroke test. It is almost maintenance-free and high durability and simple structure.

Use is possible at high temperature (Production on order)

A knocker can use it to 140-degree C high temperature by making it heat-resistant specification. Selection of resin or iron is possible for a piston. However, it is necessary to change the tube joint of air supply for a copper pipe etc.

A convenient one-touch coupling is adopted (only for RKV20)

The one-touch coupling which easy attachment and detachment and free air intake(swivel joint) is adopted.