ASAHI 21 User Manual

User's Guide
Warning & Caution Signs
This symbol reminds the user to take caution due to the potential for serious injury or death.
This symbol reminds the user to take caution due to the potential for damage to the valve if used in such a manner.
Prohibited & Mandatory Action Signs
Prohibited: When operating the valve, this symbol indicates an action that should not be taken.
Mandatory action: When operating the valve, this symbol indicates mandatory actions that must be adhered to.

General Information for Transportation, Unpacking and Storage

This valve is not designed to handle impacts of any kind. Avoid throwing or dropping the valve.
-Avoid scratching the valve with any sharp object.
-Do not over-stack cardboard shipping boxes. Excessively stacked packages may collapse.
-Avoid contact with any coal tar creosote, insecticides, vermicides or paint.
(These chemicals may cause damage to the valve.)
-Store products in their corrugated cardboard boxes. Avoid exposing products to direct sunlight, and store them
indoors (at room temperature). Also avoid storing products in areas with excessive temperatures. (Corrugated
cardboard packages become weaker as they become wet with water or other liquid. Take care in storage and
handling.)
-After unpacking the products, check that they are defect-free and meet the specifi cations.

Inspection Items

Check for fl aw, crack, or deformation on the valve.
Check for the smoothness of handle operation.

General Operating Instructions

-Certain liquid such as H
pressure increases, which may destroy the valve.
-Do not change or replace valve parts under line pressure.
-Using a positive-pressure gas with our plastic piping may pose a dangerous condition due to the repellent force
particular to compressible fl uids even when the gas is under similar pressures used for liquids. Therefore, be sure
to take the necessary safety precautions such as covering the piping with protective material. For inquiries, please
contact us. For conducting a leak test on newly installed piping, be sure to check for leaks under water pressure. If
absolutely necessary to use a gas in testing, please consult your nearest service station beforehand.
-Do not step on or apply excessive weight on valve. (It can be damaged.)
-Do not use the valve to fl uid containing slurry. (The valve will not operate properly.)
-Do not use the valve in conditions where the fl uid may have crystallized. (The valve will not operate properly.)
-Keep the valve away from excessive heat or fi re. (It can be damaged, or destroyed.)
-Before opening or closing a lubricant free product, be sure to apply water.
-Always operate the valve within the pressure vs. temperature range.
(The valve can be damaged or deformed by operating beyond the allowable range.)
-Allow suffi cient space for maintenance and inspection.
-Select a valve material that is compatible with the media. For chemical resistance information, refer to "CHEMICAL
RESISTANCE ON ASAHI AV VALVE". (Some chemicals may damage incompatible valve materials.)
-Keep the valve out of direct sunlight, water and dust. Use cover to shield the valve.
(The valve will not operate properly.)
-Perform periodic maintenance.
(Leakage may develop due to temperature changes or periods of prolonged storage, rest, or operation.)
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Read and use the information contained within these documents.
This User's Guide contains information important to the proper installation,
maintenance and safe use of the BALL VALVE TYPE21, 21α store in an
easily accessable location.
O , NaClO, etc may be prone to vaporization (Off-Gassing) which may cause irregular
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For the Owner and the Installing Contractor
ASAHI
Check for leaks to the outside or inside.
Inspect the cap nut and be sure it is not loose.
Serial No. :UA－001E
ASAHI AV VALVES