The wire slot area is generally:
Lighting line selection 1.5 square millimeters;
Socket line selection 2.5 square millimeters;
The air conditioning line must not be less than 2.5 square millimeters;
The green and yellow color lines are used for the connection lines, and any one of red, white, black and purple is used for the switch lines (fire lines). However, the color of the thread used in the same home improvement project should be consistent.
Threading pipe selection:
The flame-retardant PVC line pipe is used for the threading pipe. The surface of the pipe wall should be smooth, and the wall thickness must reach the strength that the finger does not break. It should have a certificate of conformity.
It is also possible to use a special galvanized tube of the national standard as a threading tube.
Switch panel, socket selection and installation requirements:
The size of the panel should be consistent with the size of the embedded junction box;
Clear surface, clear brand logo, anti-counterfeiting mark and national electrician safety certification Great Wall logo;
The switch feels flexible when the switch is on, the socket is stable, and the copper sheet must have a certain thickness;
The panel material should be flame retardant and sturdy;
The switch height is typically 1200 to 1350 mm, 150 to 200 mm from the edge of the door frame, and the socket height is typically 200 to 300 mm.
Furniture brand water heater brand switch socket home lighting
There are five general body styles of ball Valves: single body, three-piece body, split body, top entry, and welded. The difference is based on how the pieces of the valve-especially the casing that contains the ball itself-are manufactured and assembled. The valve operation is the same in each case.
In addition, there are different styles related to the bore of the ball mechanism itself.
Ball valves in sizes up to 2 inch generally come in single piece, two or three piece designs. One piece ball valves are almost always reduced bore, are relatively inexpensive and generally are throw-away. Two piece ball valves are generally slightly reduced (or standard) bore, they can be either throw-away or repairable. The 3 piece design allows for the center part of the valve containing the ball, stem & seats to be easily removed from the pipeline. This facilitates efficient cleaning of deposited sediments, replacement of seats and gland packings, polishing out of small scratches on the ball, all this without removing the pipes from the valve body. The design concept of a three piece valve is for it to be repairable.
Stainless Steel Ball Valves, Brass Ball Valves, Sanitary Ball Valves, Water Ball Valves
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