Overflow Tube Connection: Flow Capacity 15-60 L/min

Component Specifications

Definition

The overflow tube connection is a critical fluid management component in industrial coolant systems, designed to create a sealed interface between the reservoir's overflow outlet and external drainage piping. It ensures controlled discharge of excess coolant when reservoir levels exceed operational capacity, maintaining system pressure balance and preventing spillage. Engineered with specific dimensional tolerances and material compatibility for corrosive coolant environments.

Working Principle

Operates on gravity-driven fluid dynamics and pressure equalization. When coolant level rises above the designated maximum fill line, hydrostatic pressure forces fluid through the connection into the overflow tube. The connection maintains a continuous sealed pathway while allowing unimpeded flow, with design features preventing backflow and ensuring proper drainage orientation.

Materials

Stainless steel 316L (corrosion-resistant), PTFE-lined brass, or engineered polymers (PP, PVDF) depending on coolant chemical composition. Temperature rating: -40°C to 120°C. Pressure rating: 0-2 bar.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Size Range	1/2" to 2" diameter
Flow Capacity	15-60 L/min
Leak Pressure	≥1.5x operating pressure
Surface Finish	Ra ≤ 3.2 μm
Connection Type	Threaded (NPT/BSP) or quick-connect
Chemical Compatibility	Resistant to glycol, oil-based, and synthetic coolants

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

Standards

ISO 1179, DIN 3852, ISO 6149

Parent Products

This component is used in the following industrial products

Coolant Reservoir/Tank

A container that stores and supplies coolant fluid to maintain proper levels in the cooling system.

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Engineering Analysis

Risks & Mitigation

Chemical leakage
Connection failure under thermal cycling
Improper installation causing flow restriction
Material degradation from coolant additives

FMEA Triads

Trigger: Thread corrosion from acidic coolant
Failure: Connection leakage
Mitigation: Use corrosion-resistant materials and implement pH monitoring of coolant

Trigger: Thermal expansion mismatch
Failure: Cracking at connection points
Mitigation: Design with expansion joints and use materials with similar CTE

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1mm on critical dimensions, ±0.5° on angular alignment

Test Method

Pressure testing per ISO 1179, leak test with helium mass spectrometry, flow rate verification per DIN 3852

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Overflow Tube Connection

Manufacturer profiles associated with Overflow Tube Connection.

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Frequently Asked Questions

What maintenance does an overflow tube connection require?

Regular inspection for cracks or corrosion, cleaning of internal passages every 6 months, and torque verification of threaded connections annually.

Can overflow connections be used with different coolant types?

Material selection is critical - stainless steel for most coolants, PTFE-lined for aggressive chemicals, and specific polymers for synthetic fluids.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Overflow Tube Connection