Mastercool 70078-27 — Head Torque Wrench 27mmProfessional head torque wrench with 27mm hex socket for precise torque application on refrigeration and air conditioning fittings. Essential tool for tightening flare nuts, service port caps, and other critical connections to manufacturer specifications. Prevents over-tightening that can damage fittings and under-tightening that causes leaks.Key Features: 27mm Hex Socket – Fits 27mm flare nuts and fittings Torque Limiting – Prevents over-tightening damage Professional Quality – Built for daily HVAC/R use Durable Construction – Long-lasting tool for repeated use Prevents Leaks – Ensures proper tightening torque Protects Fittings – Avoids damage from excessive force Specifications: Model: 70078-27 Type: Head torque wrench Socket size: 27mm hex Application: Flare nuts, service port caps, refrigeration fittings Construction: Professional grade Weight: 10 kg (shipping weight) SKU: 70078-27 Barcode: 700376134087 HS Code: 82055900 Complete Torque Wrench Range:Available sizes 70078-17 — Head Torque Wrench 17mm 70078-19 — Head Torque Wrench 19mm 70078-22 — Head Torque Wrench 22mm 70078-24 — Head Torque Wrench 24mm 70078-25 — Head Torque Wrench 25mm 70078-26 — Head Torque Wrench 26mm 70078-27 — Head Torque Wrench 27mm (this model) 70078-28 — Head Torque Wrench 28mm 70078-29 — Head Torque Wrench 29mm 70078-32 — Head Torque Wrench 32mm Applications: Flare nut tightening to specification Service port cap installation Refrigeration fitting connections Air conditioning system assembly Heat pump installations Preventing over-torque damage Ensuring leak-free connections Why Use a Torque Wrench?Proper torque is critical for refrigeration and air conditioning fittings. Over-tightening can crack flare nuts, damage threads, or deform soft copper tubing. Under-tightening results in refrigerant leaks that waste expensive refrigerant and reduce system performance. A torque wrench ensures you tighten fittings to the exact specification required by the manufacturer.Common Applications for 27mm Torque Wrench: Flare Nuts – Tighten to manufacturer torque specifications Service Port Caps – Prevent over-tightening that damages threads Refrigeration Fittings – Ensure leak-free connections Critical Connections – Any fitting requiring precise torque Benefits: Prevents Damage – Torque limiting protects expensive fittings Eliminates Leaks – Proper torque ensures leak-free connections Professional Service – Demonstrates proper installation procedures Saves Time – Avoid callbacks for leaks or damaged fittings Manufacturer Compliance – Meet installation specifications Cost Savings – Prevent refrigerant loss and fitting replacement How to Use: Select correct torque wrench size for fitting (27mm for this model) Check manufacturer's torque specification for the fitting Place wrench on flare nut or fitting Apply steady pressure whilst turning Wrench will limit torque when specification is reached Do not force beyond torque limit Verify connection is secure and leak-free Torque Specifications:Always refer to manufacturer specifications for exact torque values. Common torque ranges for refrigeration fittings: Small fittings (1/4" - 3/8") – Typically 10-20 Nm Medium fittings (1/2" - 5/8") – Typically 20-40 Nm Large fittings (3/4" - 7/8") – Typically 40-60 Nm Note: These are general guidelines. Always use manufacturer's specific torque values for the fitting being installed.Maintenance: Store in protective case when not in use Keep clean and free from refrigerant oil Do not use as a regular wrench Calibrate periodically for accuracy Avoid dropping or impact damage Replace if torque limiting mechanism fails Professional Quality: Mastercool torque wrenches are built to professional standards for accurate, reliable torque application in demanding HVAC/R service environments. Essential tool for preventing over-torque damage and ensuring leak-free connections.
