Industry-Verified Manufacturing Data (2026)

Coolant Tank/Reservoir

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Coolant Tank/Reservoir used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Coolant Tank/Reservoir is characterized by the integration of Filler Cap and Sight Glass/Level Indicator. In industrial production environments, manufacturers listed on CNFX commonly emphasize Polypropylene construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A container designed to store and supply coolant fluid within a cooling system.

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Product Specifications

Technical details and manufacturing context for Coolant Tank/Reservoir

Definition
The coolant tank or reservoir is a critical component of coolant systems that serves as a storage and supply vessel for coolant fluid. It maintains proper coolant levels, allows for thermal expansion of the fluid, provides a visual indicator for coolant level monitoring, and often serves as a filling point for the system. In many systems, it also functions as a degassing chamber to remove air bubbles from the coolant.
Working Principle
The coolant tank operates by providing a sealed or vented reservoir that connects to the main coolant circulation system. It maintains a reserve of coolant that can be drawn into the system as needed, compensates for thermal expansion and contraction of the coolant, and allows for easy visual inspection and replenishment of coolant levels. In pressurized systems, it maintains system pressure while accommodating volume changes.
Common Materials
Polypropylene, High-density polyethylene, Stainless steel, Aluminum
Technical Parameters
  • Capacity of the coolant tank/reservoir (L) Customizable
Components / BOM
  • Filler Cap
    Seals the tank opening, maintains pressure, and allows for coolant addition
    Material: Plastic or metal with rubber seal
  • Sight Glass/Level Indicator
    Provides visual indication of coolant level within the tank
    Material: Transparent plastic or glass
  • Mounting Brackets
    Secures the tank to the equipment frame or structure
    Material: Steel or aluminum
  • Pressure Relief Valve
    Prevents over-pressurization by releasing excess pressure
    Material: Brass or stainless steel with spring mechanism
  • Inlet/Outlet Ports
    Connection points for coolant hoses to the main system
    Material: Molded plastic or metal fittings
Engineering Reasoning
0.1-2.0 bar (gauge pressure), 5-95°C temperature, 50-5000 L capacity
Material yield strength exceeded at 3.5 bar internal pressure for steel tanks, 2.0 bar for polymer tanks; temperature exceeding 120°C causing polymer degradation or 150°C causing seal failure
Design Rationale: Von Mises stress exceeding material yield strength (σ_y = 250 MPa for carbon steel) due to pressure cycling; Arrhenius equation degradation (k = A·e^(-Ea/RT)) for polymer materials at elevated temperatures
Risk Mitigation (FMEA)
Trigger Coolant contamination with chloride ions exceeding 25 ppm concentration
Mode: Stress corrosion cracking initiating at weld seams
Strategy: Material selection using duplex stainless steel (UNS S32205) with PREN > 40, implementing continuous conductivity monitoring with 5 μS/cm threshold alarm
Trigger Thermal cycling between 20°C and 90°C at frequency > 10 cycles/hour
Mode: Low-cycle fatigue crack propagation from stress concentrators
Strategy: Finite element analysis optimization to maintain von Mises stress below 0.67σ_y, implementing expansion joints with 15 mm minimum movement capacity

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Coolant Tank/Reservoir.

heavy duty machinery coolant reservoir industrial coolant tank replacement polypropylene coolant tank with sight glass stainless steel coolant reservoir for equipment coolant tank with pressure relief valve

Applied To / Applications

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

Coolant System
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 2 bar (gauge)
flow rate: 0 to 50 L/min
temperature: -40°C to 120°C
slurry concentration: 0 to 5% solids by weight
Media Compatibility
✓ Ethylene Glycol/Water Mix ✓ Propylene Glycol/Water Mix ✓ Deionized Water
Unsuitable: Hydrochloric Acid (HCl) solutions
Sizing Data Required
  • Required Coolant Volume (L)
  • Maximum System Flow Rate (L/min)
  • Available Installation Space (LxWxH in mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Corrosion
Cause: Chemical degradation of tank material due to coolant additives, pH imbalance, or galvanic reactions with dissimilar metals in the system.
Leakage at seams/welds
Cause: Thermal cycling stress, vibration-induced fatigue, or improper initial welding/joining leading to crack propagation.
Maintenance Indicators
  • Visible coolant seepage or puddles around the tank base or connections
  • Unusual gurgling or air-sucking sounds during pump operation indicating low fluid level or air ingress
Engineering Tips
  • Implement routine coolant analysis to monitor pH, concentration, and contaminant levels, adjusting as needed to prevent corrosive conditions.
  • Install vibration dampeners or flexible couplings on connected piping to reduce stress transfer to the tank, and conduct periodic weld inspections using non-destructive testing methods.

Compliance & Manufacturing Standards

Reference Standards
ISO 14001:2015 (Environmental Management Systems) ANSI/ASME B31.3 (Process Piping) DIN 4754 (Water heaters and storage tanks)
Manufacturing Precision
  • Wall thickness: +/-0.5mm
  • Weld seam alignment: +/-1.0mm
Quality Inspection
  • Hydrostatic Pressure Test
  • Visual Inspection for Surface Defects

Factories Producing Coolant Tank/Reservoir

Verified manufacturers with capability to produce this product in China

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✓ 97% Supplier Capability Match Found

S Sourcing Manager from Canada Jan 12, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Coolant Tank/Reservoir so far."
Technical Specifications Verified
P Procurement Specialist from United States Jan 09, 2026
★★★★☆
"Testing the Coolant Tank/Reservoir now; the technical reliability results are within 1% of the laboratory datasheet. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from United Arab Emirates Jan 06, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

11 sourcing managers are analyzing this specification now. Last inquiry for Coolant Tank/Reservoir from Mexico (1h ago).

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Frequently Asked Questions

What materials are best for coolant tanks in corrosive environments?

Stainless steel or polypropylene coolant tanks offer excellent corrosion resistance for harsh industrial environments with chemical coolants.

How do I determine the right coolant tank capacity for my machinery?

Calculate based on your cooling system's total coolant volume plus 10-20% expansion margin. Consider flow rates and heat dissipation requirements.

What maintenance do coolant reservoirs require?

Regularly check sight glass levels, inspect for leaks at ports, clean filler caps to prevent contamination, and test pressure relief valves annually.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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