The following is being proposed for preliminary review and comment only:
1. For Preliminary Review Only: Clarify test methods of the seat leakage test
2. For Preliminary Review Only: Revise the operation test to reflect current test practices
3. For Preliminary Review Only: Clarify the positive shutoff test
4. For Preliminary Review Only: Clarify the endurance test
5. For Preliminary Review Only: Clarify the test methods and samples used in the vibration test