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MOOHA

Feature:

Water Hammer Absorption

It can be directly connected in the piping that is different from the accumulator type. It has excellent water
hammer absorption effect without inhibiting the fluid flow.

Easy Installation

It can be installed easily and freely even in a narrow space. Please choose a direction for installation
according to the site situation.

Download

For a comprehensive overview of the product specifications mentioned above, feel free to download the product
catalog here.

Operating Conditions:

Maximum allowable working pressure: 1.6MPa {16.3kgf/cm2} and below
Maximum operating temperature: 60°C and below

  • Before using, check that the maximum working pressure and temperature are within the working range.
  • Perforated Pipe: Small holes are drilled in the pipe regularly placed in series with the flow, and
    connected with the inner side of the elastic tube.
  • Elastic Tube: The tube outside of the perforated pipe uses the rubber with excellent elasticity and
    airtightness, and the both ends are fixed with flanges.
  • Air Chamber: There is an air chamber between the tube and the casing. The 0.5MPa air is filled in
    advance in the air chamber.
Category:

Dimensions

ModelNominal Dia. [mm]Dimension [mm]Capacity of Air Chamber [£]Mass [kg]
φDL
MH−252512715617
MH−5050168270316
MH−8080194380628
MH−100100219440836
MH−1251252735601666
MH−1501503256402797
  • Bolts areprovided.
  • Mass and air chamber capacity given here are for the standard products with PN16 flange.

Performance

When the pressure wave that generates water hammer passes through the Mooha, its pressure is transmitted to
the tube
through the pipe. The tube that keeps balance in the normal pressure is instantly swollen due to its
elasticity, and
serves to absorb the water hammer.

Comparison ofWater Hammer Pressure


From the above comparison table, the water hammer pressure with Mooha installation is 1.5 times of the water
pressure
before shielding with the ball valve, and 4.3 times in case of without Mooha installation. So the water
hammer
difference between with and without Mooha is about 68% attenuated. In addition, according to the long period
of the
water hammer waveform, the relaxation of the pressure and the shock force due to water hammer could be
confirmed.

No.PartsMaterial
1.FlangeSS400
2.Perforated PipeStainless
3.Elastic TubeCSM
4.Air ChamberNitrogen
5.CasingS20C
6.Hex.Socket.Head.Cap.ScrewS45C
7.Pressure Gauge

The above materials given here are for the standard products.

Flange compatible dimensionStandard PN16
Changeable○JIS10K
○JIS16K
○JIS20K
○ANSI 150LB
MaterialStandardSS400