• Strainers, Uncategorized

Complete Guide to Temporary Cone Strainers: Uses, Benefits, and Installation

What is a Temporary Cone Strainer?

A temporary cone strainer (also called a witch hat strainer, funnel strainer, or pipeline cone filter) is a filtration device designed for short-term use in fluid systems. It is installed inline within a pipeline to trap debris, dirt, and contaminants, preventing damage to pumps, valves, and sensitive equipment.

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These strainers are commonly used during startup and commissioning of industrial systems to filter out residual construction debris, rust, or pipe scale before normal operations begin.

Types of Cone Strainers

1. Perforated Cone Strainers

• Made from stainless steel, carbon steel, or alloy
• Best for large particle filtration
• Commonly used in oil & gas, HVAC, and chemical processing

2. Mesh Cone Strainers

• Constructed with fine wire mesh
• Ideal for smaller particulate filtration
• Used in pharmaceuticals, water treatment, and food industries

3. Perforated + Mesh Cone Strainers

• A combination of perforated metal with an inner mesh lining
• Allows dual-stage filtration (captures both large and small debris)
• Suitable for critical applications requiring high filtration precision

How Does a Temporary Cone Strainer Work?

1. Installed between two pipeline flanges
2. Fluid flows through the strainer, capturing debris inside the cone
3. Trapped particles remain inside until the strainer is removed
4. Once filtration is complete, the strainer is taken out, and normal operations resume

Key Benefits of Using a Cone Strainer

• Protects Pumps & Valves – Prevents clogging and damage
• Cost-Effective Filtration – Affordable temporary solution
• Easy Installation & Removal – No need for permanent modifications
• Wide Material Availability – Stainless steel, carbon steel, monel, etc.
• Customizable – Available in various mesh sizes and dimensions

Industries & Applications

• Oil & Gas Pipelines – Removes weld slag, rust, and debris
• Water Treatment Plants – Filters sand, silt, and organic matter
• HVAC & Cooling Systems – Protects chillers and heat exchangers
• Shipbuilding & Marine – Keeps ballast water systems clean
• Chemical & Petrochemical Processing – Prevents contaminant buildup

Temporary Cone Strainer vs. Basket Strainer