The SPL centralized INCONEL cone springs which distribute uniformly loading on both seats as well as compensating for irregular expansion of seats and seat wear.

• SPL弹簧加压型为了消除阀座的不规则膨胀和阀座磨损，将使两个阀座受均衡的载荷，把因科内尔镍合金锥形弹簧设置在中心。