Z2FS16-30B/S，Z2FS16-2-30B/S，Z2FS16-30B/S2，Z2FS16-2-30B/S2，Z2FS16A-30B/S，Z2FS16A-30B/S2，Z2FS16B-30B/S，Z2FS16B-30B/S2，Z2FS16-3X/S，Z2FS16-3X/S2，双向节流阀