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Black resin water shutoff wrench, 12 inches long, self-adjusting head

Superior Tool

Superior Tool 3990 Water Shutoff Wrench 12 in

SKU CH-6D9D-JJWCA MPN 3990

Turns off supply stop valves in hard-to-reach spots with a 12 in resin wrench

  • TypeDrain Components
  • ColorBlack
  • Turns supply stop valves in hard-to-reach spots
  • 12 in overall length provides extended reach
  • Self-adjusting design fits without manual setting
  • Resin construction resists corrosion during use
  • 1 15/16 in diameter handles standard valve sizes

Water shutoff wrench for hard-to-reach valves

This 12-inch water shutoff wrench is designed to turn off supply stop valves in hard-to-reach locations. Its resin construction provides a lightweight, non-marring tool for plumbing tasks. The fixed, non-adjustable head is built to fit standard valve stems directly. It suits homeowners and plumbers needing a dedicated shutoff tool.

Suits standard valve stems.

The self-adjusting mechanism engages compatible valves without manual sizing, making it practical for routine maintenance and emergency shutoffs. Buyers who require an adjustable wrench for varying nut sizes or oversized commercial valves should look at a different tool. It is intended for residential and light-commercial supply stops only.

12-inch overall length reaches deep valves

The 12-inch overall length provides the reach needed to access valves recessed behind fixtures or inside wall cavities. The 1 15/16-inch overall diameter clears common obstructions around the valve body. This specific length is the deciding factor for whether the wrench can reach your installation.

Highlights

  • Turns supply stop valves in hard-to-reach spots
  • 12 in overall length provides extended reach
  • Self-adjusting design fits without manual setting
  • Resin construction resists corrosion during use
  • 1 15/16 in diameter handles standard valve sizes

Specifications

TypeDrain Components
ColorBlack
BrandSuperior Tool
Model3990

Questions about this item

How much torque can the 12 in resin handle take before it flexes?

The 12 in resin handle is self-adjusting and designed for supply stop valves; sustained high torque is not rated by the manufacturer.

Does the resin body get brittle or hot during all-day use?

The resin construction resists heat buildup and stays cool during extended operation; no brittleness is reported under normal plumbing conditions.

What valve sizes does the 1 15/16 in diameter head fit without an adapter?

The 1 15/16 in head self-adjusts to standard supply stop valves; no separate adapters are required for typical residential stops.

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