DFYF-157 Lubricating Oil Air Release Value Tester

— Precisely Measure the Oil’s Ability to Separate Air – Protecting Hydraulic & Lubrication Systems

Air entrained in lubricating oil reduces oil compressibility, causes cavitation, accelerates oxidation, and in severe cases leads to sluggish system response or even equipment damage. The DFYF‑157 Lubricating Oil Air Release Value Tester is strictly designed and manufactured according to the SH/T 0308 standard. It is used to determine the ability of lubricating oils (especially hydraulic oils and turbine oils) to separate entrained air (mist). The instrument features independent water bath and air bath dual temperature control systems, together with precise air supply and timing devices, providing key data – the air release value – for evaluating the anti‑foaming performance of oils.

Core Advantages

✅ Dedicated Standard – Professional Testing
Complies with SH/T 0308, specifically designed for air release value determination of lubricating oils. Results are accurate and reliable, widely used in oil R&D, quality inspection, and in‑service oil monitoring.

✅ Dual Temperature Control – Simulates Real Operating Conditions

• Water bath temperature range: ambient ~ 99.9°C, control accuracy: ±0.1°C

• Air bath temperature range: ambient ~ 99.9°C, control accuracy: ±5°C
  Independent control of oil sample heating temperature and compressed air pre‑heating temperature eliminates temperature differences, making test conditions closer to actual service environments.

✅ High‑Precision Intelligent Temperature Control – Easy Operation
Intelligent temperature controller with PID regulation for the water bath provides clear display and simple setting. Solid‑state relay output offers contactless, spark‑free, long‑life operation with high safety.

✅ Adjustable Digital Timer – Accurate Timing
Easy to set and read, ensuring precise control of aeration and recording time, reducing human error.

✅ High‑Quality Stainless Steel Water Bath – Robust & Durable
The water bath is made of stainless steel – corrosion resistant and easy to clean. The air bath includes a stainless steel buffer bottle and heater, with a compact and well‑arranged air circuit and adjustable pressure.

✅ Safe & Reliable Air Circuit System

• Pressure gauge and regulating valve for stable, controllable air pressure

• Secure, leak‑free connections for easy installation and maintenance

Technical Specifications at a Glance

Target Customers

• R&D and QC departments of lubricating oil manufacturers (hydraulic oils, turbine oils, gear oils, etc.)

• Third‑party oil testing laboratories

• Oil maintenance units in construction machinery, power, metallurgy and other industries

• Tribology laboratories in research institutes and universities

Why Choose DFYF‑157?

✔ Independent dual temperature control with high accuracy – ±0.1°C for the water bath ensures constant oil sample temperature; pre‑heating of compressed air in the air bath reduces test errors.
✔ Complies with SH/T 0308 – Data is authoritative within the industry and can be used as a basis for quality arbitration.
✔ Intuitive operation – Intelligent temperature controller + digital timer – set with one touch, real‑time display.
✔ Safe & durable – Solid‑state relay contactless switching, stainless steel bath, reliable air circuit sealing – suitable for long‑term continuous operation.
✔ Compact structure – Integrated design of air bath, water bath and control unit – small footprint, easy maintenance.

Contact Us Today

Let DFYF‑157 help you accurately determine the air release performance of lubricating oils and improve oil reliability.

📧 For detailed quotations, technical specifications and standard operating procedures, please contact us:
📧 Sales email: [lovecarlos2000@gmail.com]
📞 24‑hour hotline: [8615941156556]

— Dual temperature control, high accuracy – measuring air release value, protecting stable equipment operation