1. Round header tank with screw type valve

Disadvantage of the screw type diaphragm valve

- Tedious and complicated work for cutting, welding, tapping
- Require rubber hose to correct error caused by thermal expansion during welding
- Operation error caused by particle and corrosion due to moisture inside header tanks 
- Pressure loss between valve on air header tanks and blow tube
- Air leak by welding failure

2. Round header tank with coupling type valve

Disadvantage of the coupling type diaphragm valve

- Same problem with screw type diaphragm valve
- Completely make a screw when you install, otherwise unfixed valve can come out and cause the personal injury

3. Round header with flange type valve

Disadvantage of the flange type diaphragm valve

- Tedious and complicated work for cutting, welding, tapping
- Operational error by particle and corrosion due to moisture inside header tanks
- Air leak by welding failure
- Costly and time consuming for bolting

4. Square header tank with full immersion type valve

Disadvantage of square header tank

- Using the square type tank is difficult to meet EU and  US pressure container safety guideline
- Operational error by particle and corrosion due to moisture inside header tanks
- Air leak by welding failure
- Stress concentration on 4 edges part of square tank can cause crack

Compressed air presents a source of considerable potential energy precautons must be taken to prevent accidents

1. Handle with care. Directly holding valve, outlet pipe and coil for conveyance may cause damage.

2. As to supply clean air into Airbank, you need to clean the air pipe between air compressor and main

   inlet valve by passing the compressed for at leat 5 minutes.

   Be sure to connect the end of pipe with main valve after removal of the particle by above method, when

   you make installation. It is very critical process for valve reliability.

3. There is no particle in the Airbank during its production, but the particles can come from the pipes,

    which may cause operational error. Therefore you should open the drain cock for at least 5 minutes

    after piping.

4. Do not make over pressure when you connect outlet pipe with connector, it may cause air leakage due

    to removal of rubber packing. Torque 4~5 kg would be suitable.

5. Do not make over pressure when you connect nipple, which may break the bonnet. Screw nipple with

    torque 1~2 kg would be optimal, cut the hose by 90 accurately.

6. When you connect the header and header with screw, you should use sliding joint and make sure two

    parts are in common center line.

7. Precautions must be taken when you replace outlet pipe with left screw. Do not disassemble for other

    purpose except replacing.

8. Compressed air contents moisture, which can cause operational error, you should remove the moisture

    inside of the header by open the drain cock regularly.

9. When you replace the spare part kit such as diaphragm etc. you should remove the compressed air

    before operation to avoid personal injury.

10. Complete leakage test has been done before release from our factory, so no further test required. In

    early stage of air filling, leakage may happen due to the misfit o-ring, but it will be naturally sealed after

    certain time operation.