assembly 10 which may also be referred to herein as u201c valve assembly u201d or u201c assembly u201d in some embodiments the valve assembly 10 comprises a housing 12 a lever 14 a resilient member 16 and a seal 18 as shown in fig1 a 1c the housing 12 is in an u201c as molded u201d configuration in the as molded configuration the lever 14 has not been yet been folded about hinge 28 discussed in greater detail below in some embodiments the housing 12 comprises a cylindrical body 20 and a grip 22 the cylindrical body 20 is formed to attach to an outlet port on a fluid container which may contain for example a consumable liquid such as water juice dairy products edible oils and sports drinks of course other liquids of various viscosities are also contemplated in some embodiments the grip 22 comprises a pair of flared grip members 24 the flared grip members 24 are contoured to permit the operator to operate the valve assembly 10 with a single hand for example by placing an index finger and middle finger between a respective grip member 24 and the face 26 of the cylindrical body 20 as will be apparent from fig1 c.