We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Ten small plastic inline check valves in a clear bag

Loc-Line

Loc-Line 39851 In-Line Check Valve Pack of 10

SKU CH-T789-9K3AZ

Pack of 10 acetal inline check valves for 1/2 in flex hose systems, resistant to corrosion, water, acetone, alcohol, gasoline, oils and other listed chemicals

  • Pack of 10 valves simplifies multi-point installations
  • Inline check valve prevents back-flow in 1/2 in flex hose systems
  • Acetal body resists corrosion and water for long service life
  • Compatible with acetone, alcohol, gasoline, oils and other common lubricants
  • Non-threaded 1/2 in connection enables quick push-fit assembly

1/2 in In-Line Check Valve Pack

This Loc-Line 39851 pack contains ten acetal check valves designed for 1/2 in flex hose systems. The non-threaded inline connection allows straightforward installation without additional fittings. Each valve provides a one-way flow barrier in compatible fluid circuits.

Suited for chemical and fluid lines

The valves resist corrosion and water while tolerating lubricants such as acetone, alcohol, dish detergents, ethyl compounds, gasoline, grease, lacquer solvents, oils and sodium hydroxide. Buyers who need threaded connections, larger hose diameters or higher pack quantities should look at alternative valve configurations.

Ten valves per pack

The quantity of 10 units is the decisive specification for planning maintenance spares or multi-point installations. Confirm the 1/2 in hose size and chemical compatibility before ordering.

Highlights

  • Pack of 10 valves simplifies multi-point installations
  • Inline check valve prevents back-flow in 1/2 in flex hose systems
  • Acetal body resists corrosion and water for long service life
  • Compatible with acetone, alcohol, gasoline, oils and other common lubricants
  • Non-threaded 1/2 in connection enables quick push-fit assembly

Specifications

BrandLOC-LINE

Questions about this item

What hose size do I need to use these Loc-Line 39851 check valves?

They are made for 1/2 in flex hose systems with a non-threaded 1/2 in connection diameter.

Will the acetal material hold up if I run gasoline or acetone through the same line?

The acetal body is listed as compatible with gasoline, acetone, alcohol, oils, grease, lacquer solvents, ethyl, dish detergents and sodium hydroxide.

How can I confirm flow direction is correct after installing one of the ten valves?

Install the valve inline; fluid should pass freely in the marked direction and stop when pressure reverses, showing the internal check mechanism is seating properly.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.