Basic knowledge of hvac: commonly used on the boiler safe if you have any type of pneumatic valve

what type pneumatic valves used on boiler safe? What are the precautions for installation?
commonly used on the boiler safe pneumatic valve with flange single lever micro type safety pneumatic valve and flange spring safety mini rev type pneumatic valve.
security number of pneumatic valve installation according to the boiler capacity, the evaporation & gt; 。 T/h, calorific value & gt; o. MW boiler Shanghai pneumatic valve should be installed at least two security.
security matters should be paid attention to when pneumatic valve installation:
( ） Safety of pneumatic valve should be installed vertically, pneumatic valve must be installed directly on the safety of the boiler at the top of the pneumatic valve interface on the flange of the middle don't allow the installation of pneumatic valves, unfavorable also pick up again after a short tube pneumatic valve installation safety.
( ） Steam boiler exhaust pipe is not allowed to install the safety of the pneumatic valve, pneumatic valve and should be to outdoor security emissions, exhaust pipe bend less as far as possible, exhaust pipe diameter should be according to the requirements of design, not any change of pipe diameter. Hot water boiler should connect the drain pipe, drain pipe and safety shall not be fitted between the pneumatic valve pneumatic valve, drain pipe connected to the drainage of the ground floor drain or funnel, each security pneumatic valve should be set independent of the discharge pipe.
( ） Prior to installation must go through check, pressure test and setting opening pressure, qualified rear can be installed.
security matters should be paid attention to in boiler operation of pneumatic valve:
( ） For all the year round operation of the boiler, should be check regularly, and the detection unit calibration certificate issued by relevant departments.
( ） For DongYun boiler, tested to check once a year.
( ） Find safety in the operation of the pneumatic valve failure ( The overpressure without action or not to jump the pressure often action) , it is strictly prohibited to remove repair, should be replaced immediately qualified new security pneumatic valve.
( ） In order to guarantee the safe operation of the boiler, and the safety of the pneumatic valve pneumatic valve core and pneumatic seat for a long time not stick to action, must exhaust operation manual on a regular basis.
( ） After the check and adjust good security pneumatic valve shall not disassemble the seal or leveraged security of pneumatic valve positioning screw.