Design and components of a chemical injection quill - Injection Quills manufactured in India

A chemical injection quill is a device used to inject a liquid chemical into a pipeline or other equipment to prevent the buildup of scale. The design of a chemical injection quill typically includes the following components:

Hollow body: The hollow body is the main component of the quill and is inserted into the pipeline. It is typically made of a corrosion-resistant material such as stainless steel or PVC.
Check valve: A check valve is an important component of a chemical injection quill that prevents the chemical from flowing back into the pipeline. It is typically located on the inlet side of the quill.
Chemical injection point: This is the location where the chemical is added to the pipeline. It can be a manual injection point, where the chemical is added by manually injecting it through the quill, or an automatic injection point, where a metering pump is used to automatically inject the chemical at a controlled rate.
Seals: Seals are used to prevent leaks and ensure that the chemical is properly injected into the pipeline. They are typically made of a corrosion-resistant material such as Viton or Teflon.
Mounting hardware: The quill is usually mounted to the pipe or equipment by means of a flange or clamp. This allows for easy installation and maintenance.
Vent and Drain: Some chemical injection quills are designed with a vent and drain to release the pressure and allow for draining the chemical before maintenance.

In summary, a chemical injection quill is a simple device composed of a hollow body, a check valve, a chemical injection point, seals, and mounting hardware. These components work together to inject a chemical into a pipeline or equipment, preventing the buildup of scale and ensuring efficient industrial processes.

Commonly used materials for making chemical injection quills

Chemical injection quills are typically made from materials that are resistant to corrosion and can withstand the chemicals and temperatures used in the injection process. Common materials used for making chemical injection quills include stainless steel, hastelloy, PVC, and PTFE. Stainless steel is a popular choice due to its corrosion resistance, while hastelloy is often used in applications involving highly corrosive chemicals. PVC and PTFE are also used because they are chemically resistant and can withstand high temperatures.

Stainless-steel bodied chemical injection quills

Stainless steel is a popular choice for chemical injection quills due to several advantages:

Corrosion resistance: Stainless steel is highly resistant to corrosion and is not affected by most chemicals, making it a suitable material for chemical injection quills.
Durability: Stainless steel is a strong and durable material that can withstand high pressure and temperatures.
Easy to clean: Stainless steel is easy to clean and maintain, reducing downtime and increasing the lifespan of the injection quill.
Cost-effective: Stainless steel is a relatively inexpensive material, making chemical injection quills made from stainless steel more affordable than those made from other materials.
Versatility: Stainless steel is a versatile material that can be used in a variety of applications, including those involving harsh chemicals, high temperatures and high pressure.
Hygienic: Stainless steel is a hygienic material, it’s easy to sanitize and it doesn’t retain bacteria, making it suitable for use in the food and pharmaceutical industries.

Hastelloy bodied chemical injection quills

Hastelloy is a type of alloy made from nickel, molybdenum, and chromium, known for its excellent corrosion resistance properties. The advantages of using Hastelloy for chemical injection quills are:

Excellent corrosion resistance: Hastelloy is highly resistant to a wide range of chemicals, including strong acids and oxidizing agents, making it an ideal material for chemical injection quills that will be exposed to highly corrosive chemicals.
High temperature resistance: Hastelloy can withstand high temperatures, making it suitable for use in high-temperature applications.
Strong and durable: Hastelloy is a strong and durable material that can withstand high pressure and aggressive environments, increasing the lifespan of the injection quill.
Low thermal expansion: Hastelloy has low thermal expansion properties which means that it doesn’t change dimension significantly with temperature changes, this ensures a tight seal and consistent injection flow.
Cost-effective: The cost of Hastelloy is relatively high compared to stainless steel, but it’s more cost-effective than other highly corrosion-resistant materials like titanium.
Good weldability: Hastelloy is easy to weld and fabricate, which makes it a practical material for the manufacturing of chemical injection quills.

PVC bodied chemical injection quills

PVC, or polyvinyl chloride, is a type of plastic commonly used for chemical injection quills due to its resistance to chemicals and low cost. The advantages of using PVC for chemical injection quills are:

Chemical resistance: PVC is resistant to a wide range of chemicals, including acids, bases, and salts, making it suitable for use in chemical injection applications.
Low cost: PVC is a relatively inexpensive material, making chemical injection quills made from PVC more affordable than those made from other materials.
Lightweight: PVC is a lightweight material, which makes it easy to handle and install.
Easy to install: PVC chemical injection quills are easy to install and maintain, reducing downtime and increasing the lifespan of the injection quill.
Good mechanical strength: PVC has good mechanical strength and flexibility, which makes it suitable for use in applications involving vibration and movement.
Versatility: PVC is a versatile material that can be used in a variety of applications, including those involving harsh chemicals and high temperatures.
Good insulation properties: PVC has good insulation properties, which makes it suitable for use in electrical applications.
Good chemical resistance: PVC is highly resistant to most chemicals and can handle high temperature upto 60-70 degree Celsius.

PTFE bodied chemical injection quills

PTFE, or polytetrafluoroethylene, is a type of plastic known for its excellent chemical resistance and low friction properties. The advantages of using PTFE for chemical injection quills are:

Chemical resistance: PTFE is highly resistant to a wide range of chemicals, including acids, bases, and organic solvents, making it suitable for use in chemical injection applications.
Low friction: PTFE has a low coefficient of friction, which makes it suitable for use in applications involving moving parts and high-speed operations.
High temperature resistance: PTFE can withstand high temperatures, making it suitable for use in high-temperature applications.
Non-stick: PTFE is a non-stick material, which makes it easy to clean and maintain, reducing downtime and increasing the lifespan of the injection quill.
Low coefficient of thermal expansion: PTFE has a low coefficient of thermal expansion, which means that it doesn’t change dimension significantly with temperature changes, this ensures a tight seal and consistent injection flow.
Durable and strong: PTFE is a strong and durable material that can withstand high pressure and aggressive environments, increasing the lifespan of the injection quill.
Good insulation properties: PTFE has good insulation properties, which makes it suitable for use in electrical applications.
Low outgassing: PTFE doesn’t release gases, making it suitable for use in vacuum systems.

Crystal Industrial Syndicate from India, manufactures a variety of custom injection quills for a range of industrial processes. Our world-class chemical injection quills are manufactured in India comply with the world’s most stringent certifications. We have clients the world, from Europe and North America to Africa and the Middle East. Please contact us for details about how we can meet your injection quills requirements. Contact us