Siphon Pliers Knipex 81 13 250

The Knipex Siphon Pliers Knipex 81 13 250 are designed for gripping and adjusting siphons, tube fittings and connectors up to 80 mm diameter. The 250 mm pliers are made from chrome vanadium electric steel, forged and oil-hardened, and include exchangeable plastic jaws for use on sensitive surfaces. Their robust box-joint design and ergonomic handle geometry provide a durable tool for tightening and loosening screw connections and round union nuts on plastic pipe fittings.

Advantages

Fine adjustment with 25 positions allows precise adaptation to diverse diameters. The pliers are heavy duty and suitable for gentle loosening of hoses on nozzles as well as for connectors and couplings with screw connections, for example Cannon circular connectors. Exchangeable plastic jaws protect sensitive surfaces while the forged, oil-hardened chrome vanadium steel construction ensures long service life.

Suitable for (tasks / use cases)

• Tightening and loosening siphon screw connections
• Gripping and adjusting plastic pipe fittings and round union nuts
• Working with connectors and couplings with screw connections (e.g., circular connectors)
• Gently loosening hoses from nozzles

Key specifications

• Model: Knipex 81 13 250
• Length: 250 mm
• Maximum gripping diameter: up to 80 mm (exchangeable plastic jaws up to Ø 75 mm)
• Material: chrome vanadium electric steel, forged, oil-hardened
• Adjustment: 25 fine-adjustment positions, box-joint design
• Weight: 355 g

How to use

Select an adjustment position that matches the pipe or fitting diameter, open the pliers and place them over the component to be gripped. Close the handles until the jaws engage the surface, using the fine-adjustment positions to achieve a secure fit. For sensitive surfaces, fit the exchangeable plastic jaws before gripping. Use steady pressure to tighten or loosen screw connections, union nuts or hose fittings, avoiding twisting motions that could damage plastic parts.

Usage recommendations

Check the jaw inserts before use and replace damaged plastic jaws. Keep the pliers clean and lightly lubricated; store in a dry place to prevent corrosion. Do not use the pliers as a hammer or for cutting; use only within the specified gripping diameter.