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Discharge valving for a liquid dispensing pump having a reciprocable plunger is in the form of a laterally extending bunsen valve having an annular spring washer which resiliently bears against an annular valve seat adjacent the discharge opening. The loading of the valve is controlled by valve posi

Discharge valving for a liquid dispensing pump having a reciprocable plunger is in the form of a laterally extending bunsen valve having an annular spring washer which resiliently bears against an annular valve seat adjacent the discharge opening. The loading of the valve is controlled by valve positioning lugs between the top of the plunger and an overlying plunger head. The plunger may be immobilized in a fully raised position above the pump body or in a fully depressed position relative to the pump body by locking fingers positively deflected into and out of the path of reciprocation of a stop shoulder on the plunger head.

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In a pump for dispensing fluid from a container, including a variable volume pump chamber defined by relative movement between piston and cylinder members along an axis of reciprocation, said chamber having a valve controlled inlet passage, a discharge passage extending from said chamber, a discharg

In a pump for dispensing fluid from a container, including a variable volume pump chamber defined by relative movement between piston and cylinder members along an axis of reciprocation, said chamber having a valve controlled inlet passage, a discharge passage extending from said chamber, a discharge valve for said discharge passage, the pumping of fluid from said pump chamber through said discharge passage being effected upon relative movement between said members against the force of a return spring acting therebetween, said spring urging relative outward movement between said members for suctioning fluid into said chamber through said inlet passage, said discharge passage extending from said pump chamber in a lateral direction relative to said axis of reciprocation, the improvement wherein said discharge valve comprises a valve seat and a spring washer both extending in said lateral direction, said spring washer being hingedly connected to one of said members for resilient engagement against said valve seat in a discharge closing position, and said return spring urging said discharge valve into said closing position.