A device for determining the adequacy of a sealant between construction elements is attached to a source of compressed air whose pressure is controlled by a regulator. The device includes a cylinder containing at least one piston, the piston containing an air chamber and a plunger, the air chamber being in communication with a pressure gauge. The device also includes an armature having a first and a second end, the first end being attached to the cylinder, the second end having a flow valve and an air fitting in communication with the air source, the handle containing tubing as a means to conduct air from the compressed air source, the tubing being interrupted with a bleed valve. The device also includes a moveable tip such that the tip moves in the direction parallel to the axis of the cylinder, said tip comprising a wheel, a wheel bracket and a plunger shaft, the plunger shaft being attached to the plunger within the piston. In use, the operator holds the device so that the moveable tip presses against the sealant with constant pressure.

A method and device for sampling the pressure of inert purge gas flowing in two pipes to be welded at a joint comprising a sleeve for encircling the pipes during their coaxial alignment in end to end abutment, and an associated element with the sleeve forming a sealed chamber surrounding the joint and receiving gas that leaks out from the joint at the same pressure as the gas in the pipes, and a connection for connecting the chamber for measuring the pressure of the gas therein as an indication of the pressure of the gas flowing in the pipes; the method includes clamping the device around the pipes or sliding the pipes into the device.

Apparatus for locating adhesive failure of sealant joints. Useful for determination of the quality of sealant joints in structures, especially curtain wall buildings. A substantially constant pressure probe is utilized to displace roughly a middle third of a sealant bead that is located along a sealant joint having longitudinal axis and spanning a gap between adjacent substrates, using a predetermined force calibrated to provide a preselected elongation of a particular type of sealant. The testing apparatus has a frame, a first fluid cylinder having an first end wall, a first tubular cylinder wall, a first piston, and a first shaft. The first shaft is response to movement of the first piston. The first shaft has a probe affixed thereto. A second fluid cylinder is provided having an internal pressure equalization chamber defined by a second end wall, a second tubular cylinder wall, a second piston, and a fluid supply port for receiving a substantially constant pressure fluid supply to the internal pressure equalization chamber. Movement of the first piston transfers fluid pressure to the internal pressure equalization chamber of the second piston, thereby maintaining a substantially constant pressure on the first piston, and thus maintaining a substantially constant reaction force on the probe.