초록 ▼

The test plug assembly is used for pressure testing of fluid drain and vent systems. The assembly comprises an inflatable body portion or bulb connected to a rigid holder portion. The rigid holder portion includes a stem section and a plug section. The stem section is hollow and opens at one end int

The test plug assembly is used for pressure testing of fluid drain and vent systems. The assembly comprises an inflatable body portion or bulb connected to a rigid holder portion. The rigid holder portion includes a stem section and a plug section. The stem section is hollow and opens at one end into the inflatable body portion and at the other end receives a valve for pumping fluid pressure into the bulb. The body portion is separable from the plug section and includes a clamping edge structure extending along the entire periphery of an open mouth. The plug section has an outer structural configuration to engage the test opening of the fluid drain and vent systems. The plug section also has an inner clamping surface to engage the open mouth clamping edge structure of the body portion. A clamping mechanism is used to secure the clamping edge structure of the body portion against the inner clamping surface of the plug section.

대표청구항 ▼

A test plug assembly for the pressure testing of a pipeline in liquid drain and vent systems having a tee or Y-test section with a test opening, said assembly comprising: (a) an inflatable, separable body portion including an open mouth end having a clamping edge structure with an inner, peripheral

A test plug assembly for the pressure testing of a pipeline in liquid drain and vent systems having a tee or Y-test section with a test opening, said assembly comprising: (a) an inflatable, separable body portion including an open mouth end having a clamping edge structure with an inner, peripheral surface extending along the entire periphery of the open mouth, (b) a cylindrical plug section having an outer structural configuration to engage said test opening and an inner clamping surface to compressibly engage an outer, peripheral edge surface of the open mouth clamping edge structure of the body portion for forming an airtight seal therebetween, (c) coupling means for securing said cylindrical plug section in place in said test section throughout the operation of the assembly, (d) clamping structure contacting said inner, peripheral surface of the clamping edge structure of the body portion to urge said outer, peripheral edge surface against the inner clamping surface of the plug section to form said airtight seal, and (e) stem means for supporting said clamp structure including valve means for inflating the body portion.