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Two small acetal inline check valves for quarter inch hose

Loc-Line

Loc-Line 21191 In-Line Check Valve 1/4 in 2-pack

SKU CH-820J-T2AQW MPN 21191

Inline check valve two-pack with 1/4-inch non-threaded connections for 1/4-inch flex hose systems, acetal construction resists corrosion and water, compatible with acetone, alcohol, detergents.

  • TypeDrain Components
  • Prevents backflow in fluid lines with inline check-valve design
  • Resists corrosion and water damage using acetal construction
  • Works with 1/4 in flex hose systems for direct fit
  • Compatible with acetone, alcohol, gasoline, oils and other common lubricants
  • Includes two valves per pack for multiple installation points

Product Identity

The Loc-Line 21191 is an in-line check valve designed for 1/4 inch flexible hose systems. It arrives in a pack of two valves made from corrosion-resistant acetal material.

Upgrade Context

These valves replace missing or worn check valves in compatible lubricant lines. The upgrade is worth it when fluid backflow must be prevented in systems handling acetone, alcohol, oils or similar chemicals.

Fit and Limits

This suit technicians maintaining non-threaded 1/4 inch hose circuits that require inline flow control. Builders needing threaded connections or larger diameter fittings should look at alternative valve types.

Highlights

  • Prevents backflow in fluid lines with inline check-valve design
  • Resists corrosion and water damage using acetal construction
  • Works with 1/4 in flex hose systems for direct fit
  • Compatible with acetone, alcohol, gasoline, oils and other common lubricants
  • Includes two valves per pack for multiple installation points

Specifications

TypeDrain Components
BrandLoc-Line
Model21191

Questions about this item

What hose diameter does the 1/4 in check valve fit?

The valve is designed for 1/4 in flex hose systems with a non-threaded connection diameter of 1/4 in.

How do you install the valve in the line without threads?

Push the barbed ends into the 1/4 in hose until fully seated; the step often missed is not pushing far enough to lock the barbs.

When should the acetal check valves be replaced?

Replace them if flow reverses, cracking appears, or after prolonged exposure to chemicals outside the listed compatible lubricants.

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