Packing L1 - Day One Quiz

The statement suggests that with the advancements in modern fibers and lubrication, there is minimal requirement to lubricate the packing through the lantern ring. This implies that the packing is already well-lubricated and does not require additional lubrication. Therefore, the answer "True" indicates that the statement is correct.

The pH limit of PTFE is 0-14 because PTFE, also known as Teflon, is a chemically inert material that is resistant to most chemicals and solvents. It has a high melting point and is non-reactive, making it suitable for use in a wide range of applications, including as a lining for chemical containers and in the construction of laboratory equipment. The pH scale ranges from 0 to 14, with 0 being highly acidic, 7 being neutral, and 14 being highly alkaline. Therefore, PTFE can withstand exposure to both acidic and alkaline environments, giving it a pH limit of 0-14.

Kevlar is a type of fiber known as aramid. Aramid fibers are synthetic fibers that are known for their high strength and heat resistance. Kevlar, specifically, is a brand name for a type of aramid fiber that is commonly used in applications such as bulletproof vests and protective clothing. It is known for its exceptional strength-to-weight ratio and its ability to withstand high temperatures.

PTFE, also known as Teflon, is a synthetic fluoropolymer that has a high melting point. The given question asks for the temperature at which PTFE glazes. Glazing refers to the process where the surface of PTFE becomes smooth and glossy due to melting. Among the given options, the correct answer is 500 F. This means that when PTFE is exposed to a temperature of 500 F, it will start to glaze.

PTFE, also known as polytetrafluoroethylene, is a type of synthetic fiber that can "glaze". This means that it has the ability to form a smooth and shiny surface when heated or melted. PTFE is commonly used in various applications where low friction, high heat resistance, and chemical resistance are required, such as non-stick cookware, electrical insulation, and seals. Its glazing property makes it suitable for creating a smooth and glossy finish on surfaces, providing additional benefits like easy cleaning and improved durability.

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The correct answer is 4-10. This range indicates the pH limit of 412W, which means that the substance can have a pH value anywhere between 4 and 10. pH is a measure of acidity or alkalinity, with values below 7 indicating acidity, values above 7 indicating alkalinity, and a pH of 7 being neutral. Therefore, 412W can be slightly acidic, neutral, or slightly alkaline, but it cannot have a pH value outside the range of 4-10.

The cross section refers to the diameter of the shaft or box. In this case, the shaft has a diameter of 10 inches and the box has a diameter of 12 inches. Since the question asks for the cross section, we need to find the smaller diameter, which is 10 inches. Therefore, the cross section is 1 inch.

The flush pressure should be set above the stuffing box pressure in order to prevent any leakage or damage to the stuffing box. By setting the flush pressure at 1 Bar (14.5 PSI), there will be enough pressure to effectively flush any contaminants or debris away from the stuffing box, ensuring its proper functioning and preventing any potential issues.

Exfoliated Graphite is a form of graphite that is created by expanding graphite powder. It is known for its layered structure, where it comes in the form of sheets. It also has built-in lubrication properties, which make it an excellent material for various applications. However, it does not possess continuous fiber, which refers to a type of reinforcement material that is commonly found in composite materials. Therefore, continuous fiber is not a quality of Exfoliated Graphite.

The correct answer is "built in lube." This means that having a built-in lubricant helps to stop wicking. Wicking refers to the process where a liquid spreads through a material, such as oil spreading through a fabric. By having a lubricant already integrated into a product or material, it can prevent the liquid from spreading and thus stop wicking.

Flax is not considered a man-made fiber because it is derived from the flax plant, which is a natural source. Man-made fibers are those that are synthesized or created by humans using chemical processes, whereas flax is a natural fiber obtained from the stem of the flax plant. Therefore, flax does not fall under the category of man-made fibers.

PTFE, also known as Teflon, is a high-performance polymer that possesses several desirable qualities. It has a low coefficient of friction, making it an excellent choice for applications where reduced friction is required. PTFE also has a high thermal stability, with a low thermal growth rate, enabling it to withstand high temperatures. Additionally, it can be reinforced with continuous fibers to enhance its mechanical properties. However, PTFE has a limitation when it comes to oxidation, as it has an oxidation limit of 800 F. This means that it may not be suitable for applications that require exposure to higher temperatures.

Square braiding style utilizes larger strands.

The correct answer includes Raime, Hemp, and Cotton. These three options are all natural fibers. Raime is a type of plant fiber derived from the stalks of the Boehmeria nivea plant. Hemp is another plant fiber obtained from the Cannabis sativa plant. Cotton is a natural fiber that comes from the seed pods of the cotton plant. Aramid, PTFE, Fiberglass, and Graphite are not natural fibers; they are either synthetic or mineral-based materials.

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The inter-braided version of 1400R is Graphmax.

To calculate the total feet of packing needed, we need to multiply the number of pumps (5) by the shaft size (3") and the cross section (.500"). This will give us the total volume of packing required. The result is 22.9 cubic feet of packing.

The correct answer is 2355 FPM (4.7 MPS). The question asks for the shaft speed of a pump with a shaft/sleeve at a certain size and speed. The given answer provides the correct conversion from inches to feet and from feet per minute to meters per second, giving the shaft speed in both Imperial and SI units.

Lantern Rings are used in modern times to provide a clean fluid that helps keep solids out of the packing area. This means that the ring helps maintain a clean and debris-free environment, preventing any solid particles from entering the packing area. By doing so, it ensures the smooth functioning of the packing and prevents any potential damage or blockage caused by solids.