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A packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, the O-ring 10 is further arranged on the upper part of the packing assembly 9, the upper part of the O-ring 10 is provided with a packing gland 11, the valve body 1 is provided with an arc-shaped end face 12, the arc-shaped end face 12 forms a line seal between the valve body 1 and the valve seat 7, and the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41. The arcuate end face 12 forms a line seal between the sealing surface of the valve body 1 and the valve seat 7. The water grain 41 can ensure the sealing performance of the valve seat 7 and the valve disc 4.Charm V3: 301-1000 Charm Value《Little Forest》是明星在拥有绿色草地和清新空气的自然中，开设孩子们能够尽情奔跑的环保托管之家的无公害纯净综艺。平时被称为“Lee Brothers”是至亲关系的两人，将通过新节目展现现实兄弟般的配合。8. Don't believe in performance, which only represents the past, not the future. Stock speculation is in the future, not in the past.六合门门主关无尘，乃武林正义之士，为除武林大害，率领同门师弟六人围剿密族门閰震天一伙。閰震天等不敌负伤逃去。二十年后，閰震天重回武林，誓师追剿六合门人马，以了早年大恨。查实六合门人马经早年硬并密族门一役已元气尽伤，隐居西藏。今回閰震天重新挑衅，唯有倾尽各人武功，训练少主楚华之，令其腿、眼、臂、腰及轻功都能超越各长辈，与恶魔再作生死决。