1. 将阀门放在工作台上，阀座固定装置环面朝上。拆卸所有固定装置环帽螺丝，将环从阀门上拿起。（帽螺丝可以旋进位于12点和6点钟位置的攻丝孔内，协助固定装置环的拆卸。）
   Place valve on bench with seat retainer ring facing up. Remove all retainer ring cap screws and lift ring from valve. (Cap screws can be threaded into the tapped holes located at the 12 o’clock and 6 o’clock positions to aid in retainer ring removal.)
2. 拆卸旧阀座，将其报废丢弃。
   Remove old seat and discard.
3. 清洗阀座腔和固定装置环。清洗抛光阀瓣边缘，清除任何可能影响与阀座密封效果的刮痕。
   Clean seat cavity and retainer ring. Clean and polish disc edge to remove any scratches that may interfere with sealing against seat.
4. 将阀座与阀座环组合在一起。
   Attach seat to seat ring.
5. 安装阀座和阀座环。安装阀座环螺栓，按照下列表中的扭矩交叉进行。
   Install seat and seat ring. Install seat ring bolts and torque in a cross pattern to below listed torques.