Three-Way Stop Cock is ideal for pressures up to 4.5 bars. Denex International manufactures Three-Way Stop Cock. Denex International is an ISO 9001:2008 and ISO 13485:2003 certified company. Denex International supplies various types of aprons, gown, shoe cover, leggings, face mask, caps etc. Three-Way Stop Cock is used for accurate drug administration. This Three-Way Stop Cock is available with Arrows on the handle to indicate the direction of flow rotating male luer and two female luer connectors.