TLV M12, Instruction Manual

1. Safety Considerations

• Read this section carefully before use and be sure to follow the instructions.
• Installation, inspection, maintenance, repairs, disassembly, adjustment and valve 

opening/closing should be carried out only by trained maintenance personnel.

• The precautions listed in this manual are designed to ensure safety and prevent equipment 

damage and personal injury. For situations that may occur as a result of erroneous handling, 
three different types of cautionary items are used to indicate the degree of urgency and the 
scale of potential damage and danger: DANGER, WARNING and CAUTION. 

• The three types of cautionary items above are very important for safety; be sure to observe 

all of them, as they relate to installation, use, maintenance, and repair. Furthermore, TLV 
accepts no responsibility for any accidents or damage occurring as a result of failure to 
observe these precautions.

Indicates an urgent situation that poses a threat of death or serious injury.

Indicates a DANGER, WARNING or CAUTION item.

Indicates that there is a potential threat of death or serious injury.

CAUTION

WARNING

DANGER

CAUTION

Indicates that there is a possibility of injury, or equipment/product 
damage.

Install properly and DO NOT use this product outside the recommended 
operating pressure, temperature and other specification ranges. 

Improper use may result in such hazards as damage to the product or 
malfunctions, which may lead to serious accidents. Local regulations may 
restrict the use of this product to below the conditions quoted.

Use hoisting equipment for heavy objects (weighing approximately 
20 kg (44 lb) or more). 

Failure to do so may result in back strain or other 

injury if the object should fall.

Be sure to use only the recommended components when repairing 
the product, and NEVER attempt to modify the product in any way. 

Failure to observe these precautions may result in damage to the 
product or burns or other injury due to malfunction or the discharge of 
fluids.

Take measures to prevent people from coming into direct contact 
with product outlets. 

Failure to do so may result in burns or other injury 

from the discharge of fluids.

When disassembling or removing the product, wait until the internal 
pressure equals atmospheric pressure and the surface of the 
product has cooled to room temperature. 

Disassembling or removing 

the product when it is hot or under pressure may lead to discharge of 
fluids, causing burns, other injuries or damage.

Use only under conditions in which no freeze-up will occur. 

Freezing 

may damage the product, leading to fluid discharge, which may cause 
burns or other injury.

Use under conditions in which no water hammer will occur. 

The 

impact of water hammer may damage the product, leading to fluid 
discharge, which may cause burns or other injury.

Do not use excessive force when connecting threaded pipes to the 
product. 

Over-tightening may cause breakage leading to fluid discharge, 

which may cause burns or other injury.

Do not stand on or apply body weight to the handwheel. 

The 

handwheel may break, resulting in injury or other accidents.

English

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