F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
189/10
F16L 55/10 (2006.01) F16L 55/136 (2006.01) G01N 3/12 (2006.01)
Patent
CA 1176189
ABSTRACT OF THE DISCLOSURE A high pressure pipe tester plug for insertion into a pipe having a joint such as a weld to be tested includes a stem termina- ting in a fixed tapered washer, a plurality of grip segments arranged about the stem, an annular floating mandrel positioned about the stem and having an upper retaining section, a cylindrical section and a tapered entry section, an O-ring positioned in an internal recess of the floating mandrel and a ring-shaped seal, rectangular in cross section, positioned about the cylindrical section of the floating mandrel and retained by the upper retaining section. When tightened by a nut, the floating mandrel is forced into the top end of the grip segments, the washer is forced into the bottom end of the grip segments and the ring-shaped seal engages the pipe interior to isolate the joint to be tested.
405689
Smart & Biggar
Thaxton Inc.
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