Chemical Injection
Fixed Injection Quill
Permanent-mount injection quills for continuous chemical dosing into pipelines and process vessels.
Overview
Fixed injection quills are permanently installed through a pipe fitting or nozzle to deliver chemical treatment — such as corrosion inhibitors, scale inhibitors, biocides, or oxygen scavengers — directly into the process flow. HovoyPetro fixed quills are available in multiple materials and connection types, with custom lengths and tip configurations to optimize chemical dispersion.
Key Features
- Single-point or multi-port injection tip designs
- Materials: SS316L, Hastelloy C276, Alloy 20, Monel 400, PVC
- Connection: NPT, BSP, flanged, socket weld
- Custom lengths from 150 mm to 3000 mm
- Integrated check valve option to prevent backflow
- Optional spray nozzle tip for improved dispersion
Technical Specifications
| Tube OD | 6 mm, 10 mm, 12 mm, 1/4", 3/8", 1/2" standard |
| Connection | NPT, BSP, ANSI flange, socket weld |
| Max Pressure | Up to 345 bar (5000 psi) depending on size and material |
| Temperature | -29 °C to 315 °C (per material) |
| Tip Types | Open-end, single-port, multi-port, spray nozzle |
| Length | Custom: 150 mm to 3000 mm. Standard: pipe centerline reach. |
Available Materials
Stainless Steel 316 / 316L
Hastelloy C276
Alloy 20
Monel 400
Inconel 625
PVC / CPVC (low-pressure)
Applicable Standards
- ASME B31.3 — Process Piping
- NACE MR0175 / ISO 15156 — Sour Service (upon request)
Applications
- Corrosion inhibitor injection
- Scale inhibitor dosing
- Biocide and chlorine injection
- pH adjustment chemical dosing
- Oxygen scavenger injection
- Methanol injection for hydrate prevention
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