Cold-Weld Pinch-Off Devices

CHA devices for pinching off tubing produce a hermetically perfect cold-weld of tube walls; ends are neat and clean. The most common application is pinching off vacuum exhaust tubing of fully annealed OFHC copper. Other soft metals, such as fully annealed aluminum, .070″ OD x .010 wall Kovar, annealed nickel, thin wall 52 alloy and platinum, can be pinched off. While not primarily for pressure applications, the CHA vacuum seal will hold relatively low pressures (75-100 lbs.)

Jaws are hardened, ground, high speed tool steel (Rockwell C 60 to 65). Extra jaws are available for replacement if required by heavy usage.

Model POD-375
Hand held Pinch-Off Tool.

Model POD-375-O
Hand held Pinch-Off Tool with offset jaws, permits pinch-off access in confined situations.

Model POD 375-H
Hydraulic actuated, pinch-off tool can be used single handed by the operator leaving a free hand for holding or supporting the part to be sealed. This tool is not available with offset jaws.

Model POD-749
Hydraulic actuated, pinch-off tool.

Model POD-375-O
Hydraulic actuated, pinch-off tool. Includes hand operated compressor.

Model POD 375-H
Hydraulic actuated, pinch-off tool. Includes Foot operated compressor.

For more details, download the  Cold-Weld Pinch-Off Devices (544KB) and  POD-375 Pinch-Off Tool Operating Instructions (16KB).