©Copyright Task Force Tips, Inc. 2016-2017
LIA-540 September 25, 2017 Rev03
3
1.0 MEANING OF SAFETY SIGNAL WORDS
A safety related message is identifi ed by a safety alert symbol and a signal word to indicate the level of risk involved with a particular
hazard. Per ANSI standard Z535.6-2006, the defi nitions of the four signal words are as follows:
DANGER
DANGER indicates a hazardous situation which, if not avoided, will result in death or serious
injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury.
NOTICE
NOTICE is used to address practices not related to personal injury.
2.0 SAFETY
WARNING
Quick changes in valve position can cause high pressure spikes due to water hammer and may
result in damaged equipment which could lead to injury or death. Open and close the valve
slowly to avoid water hammer.
WARNING
The Pressure Relief Valve will open to relieve excess pressure but it may not have enough
fl ow capacity to protect against large pressure spikes such as those caused by water hammer.
Excess pressure can cause equipment failure and directly or indirectly lead to injury or death.
Always operate valves slowly to avoid the risk of water hammer.
WARNING
Injury or death can result from burst hoses and fi ttings. Be sure the pressure relief valve is set
at the proper pressure for the type of hose and equipment you are using. See NFPA 1961 and
NFPA 1962.
WARNING
Injury or death may occur by attempting to use a damaged valve. Per NPFA 1962, the device
shall be inspected and tested at least quarterly. Before use, inspect for damage resulting from:
• Failure to drain valve followed by exposure to freezing conditions
• Exposure to temperatures in excess of 160 degrees F
• Missing parts, physical abuse
WARNING
This equipment is intended for use by trained personnel for fi refi ghting. Its use for other
purposes may involve hazards not addressed by this manual. Seek appropriate guidance and
training to reduce risk of injury.
WARNING
Kinks in supply hose may reduce water fl ow and cause injury or death to persons dependant on
water fl ow. Avoid tight bends to minimize risk of hoseline kinks.
WARNING
The valve may be damaged if frozen while containing signifi cant amounts of water. Such damage
may to diffi
cult to detect visually and can lead to possible injury or death. Any time the valve
is subject to possible damage due to freezing, it must be hydrostatically tested by qualifi ed
personnel before being considered safe for use.
CAUTION
Maximum operating pressure 300 psi (21 bar). Do not exceed 300 psi (21 bar) on either side of
the valve.
CAUTION
Valve must be properly connected. Mismatched or damaged connectors may cause leaking or
uncoupling under pressure and could cause injury.
CAUTION
Use with salt water is permissible provided the LDH Gated Wye is thoroughly cleaned with fresh
water after each use. The service life of the LDH Gated Wye may be shortened due to the eff ects
of corrosion and is not covered under warranty.
