ASAHIAVVALVES Installation,OperationandMaintenanceManual
Butterfly Valves Type 75 1
(1) General operating instructions
○Operate the valve within the pressure Vs temperature range.
(The valve can be damaged by operating beyond the allowable range.)
○Select a valve material that is compatible with the media, refer to “CHEMICAL RESISTANCE ON ASAHI AV
VALVE”.
(Some chemicals may damage incompatible valve materials.)
○Do not use the valve to fluid containing slurry. (The valve will not operate properly.)
○Do not use the valve on condition that fluid has crystallized.
(The valve will not operate properly.)
○Do not step on the valve or apply excessiveweight on valve. (It can be damaged.)
○Do not exert excessive force in closing the valves.
○Make sure to consult a waste treatment dealer to dispose of the valves.
(Poisonous gas is generated whenthe valve is burned improperly.)
○Allow sufficient space for maintenance and inspection.
○Keep the valve away from places ofdirect sunlight, water and dust. Use cover to shield the valve.
(The valve will not operate properly.)
○Set valve support on thevalve.
○Keep the valve away from excessive heator fire. (It can be deformed or destroyed.)
○In case of changing an operating part or replacing parts, drain the fluid completely from the pipe line.
(The stem will be pushed out by fluid pressureor the fluid leakage may occur.)
(2) General instructions for transportation, unpacking and storage
○Keep the valve packed in the cartonor box as delivered until installation.
○Keep the valve away from any coal tar, creosote (antiseptic for wood), termite insecticide, vermicides, and paint.
(This could cause swelling and damage the valve.)
○Do not impact or drop the valve. (It can bedamaged.)
○Avoid scratching the valve with any sharp object.
