Floating stem-disc engagement, hardfaced with 13 CR, Stellite 6, SS 316 or Monel, ground and lapped with seat.

• 浮动的阀杆-阀瓣啮合，13CR、钨铬钴合金6、不锈钢316或蒙乃尔表面硬化、研磨抛光的阀座。