Premix Technologies manufactures injection quills for chemical injection, corrosion inhibitor dosing, antiscalant injection and process chemical addition in industrial pipelines. Fixed, retractable and adjustable types in SS316L, PVDF, Hastelloy and duplex SS.
An injection quill is a device installed into a process pipe that allows a chemical to be injected directly into the centre of the flowing fluid. By releasing the chemical at the pipe centreline rather than at the pipe wall, the injection quill ensures rapid and uniform mixing, prevents localised concentration at the pipe wall, reduces corrosion risk at the injection point and improves the effectiveness of the dosed chemical.
Injection quills are a critical component in chemical dosing systems for water treatment, oil and gas, cooling towers, boiler systems, RO plants and industrial process pipelines. Premix Technologies supplies injection quills as standalone items and as part of complete chemical dosing systems and dosing pump packages.
Permanently installed through a pipe fitting. The quill tube extends to the pipe centreline for direct centre-line injection. Simple, reliable and cost-effective for most dosing applications where maintenance access during operation is not required.
Can be withdrawn from the pipe for inspection, cleaning or replacement without shutting down the process or depressurising the line. Preferred for high-pressure pipelines, hazardous chemical service and where regular maintenance is required.
Quill insertion depth can be adjusted to suit different pipe diameters from a single quill design. Suitable for installations where the pipe diameter is not fixed or where field adjustment is required during commissioning.
Integrated check valve prevents backflow of process fluid into the dosing line when the dosing pump is not running. Essential for corrosive chemicals and pressurised pipelines where backflow could damage the pump or contaminate the chemical tank.
Material selection for injection quills is based on the chemical being injected, the process fluid, operating temperature and pressure:
| Material | Suitable For | Max Temperature |
|---|---|---|
| SS316L | Antiscalants, corrosion inhibitors, mild chemicals, biocides | 300°C |
| SS304 | Non-corrosive chemicals, water-based inhibitors, general service | 300°C |
| PVDF | Acids (HCl, H2SO4), sodium hypochlorite, chlorine, oxidising chemicals | 140°C |
| Hastelloy C276 | Highly corrosive chemicals, HF acid, reducing/oxidising environments | 400°C |
| Duplex SS (2205) | Chloride-rich environments, offshore seawater service, high strength duty | 250°C |
| Carbon Steel | Oil service, non-corrosive hydrocarbons, general utility chemical injection | 350°C |
Corrosion inhibitors, scale inhibitors, methanol and hydrate inhibitors injected into production pipelines, flowlines and export lines. Retractable quills for high-pressure pipeline service. Part of complete oil and gas chemical injection packages.
Coagulant injection, flocculant dosing, pH correction acid/alkali injection, chlorination and antiscalant dosing in WTP, ETP and STP pipelines. Supplied as part of complete chemical dosing systems.
Scale inhibitor, biocide, corrosion inhibitor and blowdown chemical injection in cooling tower circuits and boiler feed water systems.
Antiscalant injection, dechlorination chemical dosing, acid dosing for pH correction and membrane cleaning chemical injection in reverse osmosis plants.
Related products: Dosing Pumps | Chemical Dosing Systems | Corrosion Inhibitor Packages | Methanol Injection Packages | Oil & Gas Solutions
Contact Premix Technologies for injection quill specifications, material selection and pricing. We supply to water treatment, oil and gas, chemical and process industries across India and export.
Request Quotation sales@premixtechnologies.com