Wet alarm pneumatic valve installation requirements

the alarm to the installation of the pneumatic valve group should be installed water control pneumatic valve, pneumatic valve, alarm and then should alarm pneumatic valve auxiliary piping connection. Pneumatic valve water control, alarm, pneumatic valve and water distribution of main connection, should make the water flow in the same direction, alarm is easy to operate the pneumatic valve should be installed in the obvious position, the height from the indoor appropriate for. M on both sides and the distance of metope should not be less than. m； Positive and wall should not be less than the distance. m。 Install alarm pneumatic valve group should be indoor ground drainage.
other components installation position requirements:
pressure gauge: the location of the alarm on the pneumatic valve to facilitate observation;
the drain and pneumatic valve test: to facilitate the position of operation;
water control pneumatic valve: location for easy operation, and has the opening of the obvious marks and reliable locking facilities.
filter: before the delayer, facilitate the location of the discharge operations.
（ ） Often repair or regular cleaning of pneumatic valves, piping, accessory equipment and pipe connections, commonly use flange connection.
（ ） Flange classification: according to the flanges and the pipe connections, flange can be divided into: flat welding flange, butt welding flanges, flat welding flange, butt welding flange, come loose flange loose flange, threaded flange, etc. , based on the characteristics of the project, selection of flat welding flange.
（ ） The selection of flange: this project all flange adopt finished flange. For flange bolt hole smooth, isometric, flange contact surface is flat and level, guarantee the impermeability, check gutter geometry size is accurate.
（ ） Flange and pipe connection, must keep the pipe and flange vertically. Such as double sided welding pipe flange, flange inside the weld may not highlight the flange sealing surface.
（ ） Flange connection bolt diameter, length, should conform to the requirements of the specification, the bolt should be symmetrical. Fastening bolt thread should be exposed to buckle, should not be more than half the diameter of the bolt.
（ ） Thickness of flange gasket selection: cold water USES for mm rubber mat, air conditioning water with mm thick asbestos pad.
（ ） Gasket set: the flange gasket inside circle may not be into tube, the outer ring to the flange bolt hole is advisable. Shall not be placed among flange cant pad or more than two liners, the gasket edge width should be consistent; When cut in production, should leave a handle flange in order to install.