7606 S.W. BRIDGEPORT ROAD, PORTLAND, OR 97224, PHONE: 971-249-1600, FAX: 971-249-1601

 

TO: Evans Components INC

 

Subject: and Modular G Series gas sticks

 

Equipment used to perform testing

 

Alcatel 180 TD leak detector was used.

 

Test Results

 

Leak tested 1/4 modular G stick across regulator seat

Leak Test intervals with associated leak rates:

50 cycles 3.1e-10

100 cycles 6.8e-10

250 cycles 9.0e-10

500 cycles NA

750 cycles NA

1000 cycles NA

 

Regulator handle became hard to adjust after 250 cycles

There was little change in leak rate form starting cycle to finished cycles.

 

Leak tested 1/2 modular G stick across regulator seat

Leak Test intervals with associated leak rates:

50 cycles 2.2e-9

100 cycles 5.4e-9

250 cycles 8.9e-9

500 cycles 1.3e-8

750 cycles 5.2e-8

1000 cycles 9.3e-8

 

There was little change in leak rate form starting cycle to finished cycles.

 

All testing was done to Semi Standards with traceable calibrated equipment.

 

PM/QAR

Rick Cannetti

Applied Mechanical