二氧化碳钢瓶阀门的轴耦合（增加保持装置）

Product name: shaft coupling of co2 cylinder valve (increase the holding device)

Model: QF - 40

Specification: QF - 40

Product introduction: applicable to oxygen, nitrogen, air, nominal pressure, nominal size 15 mpa: DN4mm export thread: internal thread W23 * 1/14 JIS B 8246 connected with gas cylinder thread: JIS B 8246 V2 safety device temperature or pressure: no