Trap Body for Cold Traps and Condensers | Specifications & Standards

Product Specifications

Technical details and manufacturing context for Trap Body

Definition

The trap body is the primary structural component of a cold trap or condenser system. It serves as the containment vessel that houses the cooling elements, such as coils or jackets, and provides the internal volume where vapors or gases are cooled and condensed into liquids or solids. This component forms the main chamber where the phase change occurs and where collected substances accumulate for removal. The trap body is typically manufactured from materials such as stainless steel, carbon steel, or glass, depending on the application requirements. Key parameters include nominal diameter (DN15–DN300, per ISO 6708), design pressure (1.0–1.6 MPa), design temperature (-40–85°C), body material (304/316L, per ASTM A240), wall thickness (5–15 mm, per ASME B16.34), surface roughness (0.8–1.6 μm Ra, per ISO 1302), leakage rate (≤0.1 mL/min), weight (5–50 kg), connection type (flanged or threaded, per ASME B16.5), and pressure rating (PN16–PN40, per ISO 7005). These values are reference ranges and must be confirmed for the specific model and application. The trap body is designed to provide an enclosed environment for efficient heat transfer and condensation. It must be selected based on process conditions, including flow capacity, pressure, temperature, and the nature of the media. Proper installation and maintenance are essential to ensure reliable operation and to prevent leaks or material degradation. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The trap body provides an enclosed environment where hot vapors or gases enter and come into contact with cooled surfaces. As the substances lose thermal energy to the cooled walls or internal cooling elements, they undergo a phase change from gas/vapor to liquid/solid state. The condensed material collects in the bottom of the body for subsequent drainage or removal. The design of the body ensures efficient heat transfer and containment of the process media.

Common Materials

Stainless Steel, Carbon Steel, Glass

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	DN15–DN300 mm	Matches pipe size for flow capacityISO 6708
Design Temperature	-40–85 °C	Outside range material properties degrade
Body Material	304/316L	316L for corrosive mediaASTM A240
Wall Thickness	5–15 mm	Pressure rating and corrosion allowanceASME B16.34
Surface Roughness	0.8–1.6 μm Ra	Smooth finish reduces foulingISO 1302
Leakage Rate	≤0.1 mL/min	At rated pressure, class A
Weight	5–50 kg	Depends on size and material
Connection Type	Flanged/Threaded	Flanged for high pressureASME B16.5
Pressure Rating	PN16–PN40 bar	Higher rating for severe serviceISO 7005

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Inlet Port Part
Entry point for vapors or gases into the trap body

Material: Stainless Steel
Outlet Port Part
Exit point for non-condensed gases from the trap body

Material: Stainless Steel
Drain Valve Connection Part
Connection point for removing collected condensed substances

Material: Stainless Steel
Cooling Jacket/Coil Mounting Part
Interface for attaching cooling elements to the trap body

Material: Same as body material
Insulation Layer Part
Thermal insulation to maintain low temperatures and prevent heat ingress

Material: Polyurethane Foam or Mineral Wool
Cooled Wall
The trap wall itself: vapour gives up its heat here and the condensate runs down to the bottom.
Internal Cooling Element Optional
A coil or finger inside the trap, used where wall cooling alone is not enough.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Cold Trap/Condenser

View system integration details

Condensate Traps

View system integration details

Manufacturers of Trap Body

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is a trap body used for?

A trap body is the main housing of a cold trap or condenser. It contains the cooling mechanism and provides the chamber where vapors or gases are cooled and condensed into liquids or solids, which are then collected for removal.

What materials are available for trap bodies?

Common materials include stainless steel, carbon steel, and glass. The choice depends on the application, such as corrosion resistance or temperature requirements. For example, 304 or 316L stainless steel is often used for corrosive media.

What are typical design parameters for a trap body?

Typical parameters include nominal diameter (DN15–DN300), design pressure (1.0–1.6 MPa), design temperature (-40–85°C), wall thickness (5–15 mm), and surface roughness (0.8–1.6 μm Ra). These are reference ranges and must be confirmed for the specific model.

How should I verify the suitability of a trap body for my process?

You should check the manufacturer's datasheet for the exact specifications, including pressure rating, temperature limits, and material compatibility. Always verify model-specific values and standards with the legal manufacturer or supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 10 bar (g)
other spec:	Flow Rate: 0.5-50 L/min, Slurry Concentration: ≤15% solids by volume
temperature:	-100°C to 150°C

Trap Body

Product Specifications

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