The Loc-Line NPT female valve fitting is made of orange and blue acetal copolymer plastic, connects Loc-Line modular hose to NPT threaded male pipe, and adjusts manually to regulate the flow of coolant or air. The acetal copolymer plastic resists corrosion and moisture and can be used with acetone, alcohol, ethyl, greases, oils, commercial dish detergents, gasoline, lacquer solvents, and sodium hydroxide. The fitting has a maximum operating temperature of 170 degrees F. The material meets National Sanitation Foundation (NSF)/American National Standards Institute (ANSI) 14, 51, and 61 specifications for use with drinking (potable) water, and complies with Registration, Evaluation, Authorization of Chemicals (REACH) and Restriction of the Use of Certain Hazardous Substances (RoHS) standards. The component connects to other Loc-Line components by a ball-and-socket design that snaps together for a tight seal.

Lockwood Products manufactures the Loc-Line modular hose system of low-pressure hose and couplings used for coolant, air delivery, smoke and dust removal, and other applications. The company, founded in 1981, is headquartered in Lake Oswego, OR.