When a simmer is present, raise the adjust ring (push the notches to the right while in front of notch) by one at a time. ( Never set the adjust ring to contact with the valve disc)

До этого абзаца был следующий текст:
To the contrary to the above procedure for too little blowdown, turn down the adjust ring to the left (white viewing in front of notch but keeping an eye on it.) In case of, hunting condition (disc makes drastic up and down movement repeatedly when the safety valve is in a blowing off condition) turn down the adjust ring to the left in case of chattering, same as above, turn down the adjust ring. In this case turning degree is smaller than that for hunting. For cure of these unstable operation, please refer to simmer, chattering and Hunting of 7.3 unstable operation.
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http://www.interflow-th.com/information_Product(more)/SRV POP.pdf