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6 answers

Most are made of titanium and never need to be replaced...your best bet is to find out from a doctor...not the shmoes here at Yahoo Answers!

2006-06-13 13:00:12 · answer #1 · answered by Anonymous · 0 0

Approximatley 10 years.

2006-06-13 13:01:41 · answer #2 · answered by flowerlover12003 6 · 0 0

metal valve...well lets see I checked the one on my car just now and with a little spray of WD40 it was working like new. try that

2006-06-13 13:00:43 · answer #3 · answered by Anonymous · 0 0

10-15 yrs

2006-06-13 13:01:43 · answer #4 · answered by leeaterry 2 · 0 0

That's something you should ask your doctor

2006-06-13 13:02:28 · answer #5 · answered by BONE° 7 · 0 0

Ask your cardiologist.

2006-06-13 13:00:17 · answer #6 · answered by Anonymous · 0 0

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