The handle turning torque should become snug, but not excessive when the valve is properly adjusted for leak-free operation.
手柄的旋转扭矩应该变得舒适，而且当对阀门进行适当地调整使其实现无泄漏操作时感觉不会过紧。
The handle turning torque should become snug, but not excessive when the valve is properly adjusted for leak-free operation.
手柄的旋转扭矩应该变得舒适，而且当对阀门进行适当地调整使其实现无泄漏操作时感觉不会过紧。
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