Combination ball valves can be customized
Pilot operated safety pneumatic valve installation considerations
by：AIRWOLF
2020-10-15
Safety pneumatic valve is a safety protection with pneumatic valve, under the action of the open-close part affected by external forces in a normally closed state, when the equipment or piping within the medium pressure increases, more than a specified value automatically when open, through a discharge medium system to prevent the pipeline or equipment within the medium pressure in excess of the prescribed value.
When the installed it what to notice?
Then take you to get to know it.
（ l） Rated capacity greater than zero. 5 t/h boiler, pneumatic valve installed at least two security: rated evaporation is less than or equal to zero. 5 t/h boiler, at least to a pneumatic valve safety. Can be divided into
the economizer exit, the steam superheater outlet pneumatic valve must be installed security.
（ 2) Security pneumatic valve should be installed vertically in the pot, the top of the header. In the security between pneumatic valve and the drum or header, shall not be equipped with access steam outlet pipe and the pneumatic valve.
（ 3) Pilot operated safety pneumatic valve to prevent heavy hammer to mobile devices and on its own limitation lever deviant guide frame, spring loaded safety pneumatic valve to have raise a hand and prevent twisted casually adjusting screw of the device.
（ 4) For the rated steam pressure is less than or equal to 3. 82 mpa boiler, safety pneumatic valve throat diameter should not less than 25 mm: rated steam pressure is greater than 3. 82 mpa boiler, safety pneumatic valve throat diameter should not less than 20 mm.
（ 5) Safety of pneumatic valve and connecting pipe of boiler, its cross-sectional area should not be less than the safety import cross-sectional area of pneumatic valve. If several security pneumatic valve installed on a common attached directly to the drum on the spool, spool access cross-sectional area should not step in all security pneumatic valve exhaust area 1. 25 times.
（ 6) Safety exhaust pipe of pneumatic valve should be installed commonly exhaust steam pipe should be road safety, and have enough area, ensure the exhaust steam flow. Security pneumatic valve at the bottom of the exhaust pipe should be put on AIRS have received safety drain pipe, on the exhaust pipe and drain pipe, are not allowed to furnish the pneumatic valve.
（ l） Rated capacity greater than zero. 5 t/h boiler, pneumatic valve installed at least two security: rated evaporation is less than or equal to zero. 5 t/h boiler, at least to a pneumatic valve safety. Can be divided into
the economizer exit, the steam superheater outlet pneumatic valve must be installed security.
（ 2) Security pneumatic valve should be installed vertically in the pot, the top of the header. In the security between pneumatic valve and the drum or header, shall not be equipped with access steam outlet pipe and the pneumatic valve.
（ 3) Pilot operated safety pneumatic valve to prevent heavy hammer to mobile devices and on its own limitation lever deviant guide frame, spring loaded safety pneumatic valve to have raise a hand and prevent twisted casually adjusting screw of the device.
（ 4) For the rated steam pressure is less than or equal to 3. 82 mpa boiler, safety pneumatic valve throat diameter should not less than 25 mm: rated steam pressure is greater than 3. 82 mpa boiler, safety pneumatic valve throat diameter should not less than 20 mm.
（ 5) Safety of pneumatic valve and connecting pipe of boiler, its cross-sectional area should not be less than the safety import cross-sectional area of pneumatic valve. If several security pneumatic valve installed on a common attached directly to the drum on the spool, spool access cross-sectional area should not step in all security pneumatic valve exhaust area 1. 25 times.
（ 6) Safety exhaust pipe of pneumatic valve should be installed commonly exhaust steam pipe should be road safety, and have enough area, ensure the exhaust steam flow. Security pneumatic valve at the bottom of the exhaust pipe should be put on AIRS have received safety drain pipe, on the exhaust pipe and drain pipe, are not allowed to furnish the pneumatic valve.
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