What is a class 125 flange?

What is a class 125 flange?

1 Class 125 flange is rated for 125 psi at 353ºF (178ºC), which is the boiling temperature for water at that pressure. For example, a Class 150 flange is rated about 270 psi at ambient conditions (i.e. 100ºF or 38ºC), 180 psi at 400ºF (204ºC), 150 psi at 600ºF (316ºC), and 75 psi at 800ºF (427ºC).

What are the classes of flanges?

Flange Class There are seven Class 150#, 300#, 400#, 600#, 900#, 1500#, and 2500#. Higher the flange ratings, heavier the flange, and can withstand higher pressure and temperature. So, when the temperature goes up for a given material, the maximum allowable pressure goes down, and vice versa.

What is valve Class 300?

The features of these cast steel gate valves are: outside screw and yoke, bolted bonnet , flexible or solid wedge, rising stem with top sealing. Standard materials are A216WCB/F6, other materials and other trims are available.

What is the difference between ductile iron and malleable iron?

Malleable iron has better ductility, and austenitic iron has higher tensile strength. Herein, let us briefly introduce the main differences between ductile iron and grey iron. Ductile iron has higher tensile strength, yield strength and elongation. Grey iron has lower prices, and easier to be produced.

What are the properties of ductile iron?

Ductile iron maintains the traditional qualities of cast irons, resulting from the high carbon content: compression strength, castability, abrasion resistance, machinability, fatigue strength.

How do you replace a cast iron toilet flange?

Install a toilet flange on the outside. This can be done with a hammer and chisel. If the flange is cast iron with a rubber gasket, you should be able to remove the cast iron with a hammer and chisel, remove the rubber gasket with a sharp knife, then replace the gasket and the flange.

What is the weight of ductile iron per foot?

These weights are based on minimum class (Thickness Class 51 for 3″ and 4″ and Class 50 for 6″ through 54″) Ductile Iron Pipe with minimum thickness standard cement lining as specified in AWWA C104 and on weight of water of 62.4 pounds per cubic foot.