Low stem head in wedge cavity reduces height and weight of valve. Design pioneered by Velan.
Low stem head in wedge cavity reduces height and weight of valve. Design pioneered by Velan.
楔腔内的低阀杆头，降低了阀门的高度，减少了阀门的重量。这些结构设计也是由Velan首创。
Low stem head in wedge cavity reduces height and weight of valve. Design pioneered by Velan.
楔腔内的低阀杆头，降低了阀门的高度，减少了阀门的重量。这些结构设计也是由Velan首创。