黄铜内螺纹静态平衡阀 brass FNPT static balance valve SP15-16T

KPF静态平衡阀 KPF static balance valve PHF-DN16-600-F-PN16

SP45法兰静态平衡阀 SP45 flange static balance valve PHF-DN32-600-F-PN16

SP15内螺纹静态平衡阀 SP15 FNPT static balance valve PHF-DN15-50-L-PN16

SP65焊接球型静态平衡阀 SP65 welded sphere static balance valve PHF-DN32-300-H-PN16