Caution: Exercise care to prevent purple primer or solvent cement from running back in the valve to the diaphragm or seating area.

警告：要小心谨慎操作，避免紫色底漆或液状粘固剂流回到阀门内的隔膜或密封区域。

youdao

Caution: Do not allow purple primer or solvent cement to migrate into the valve weir and diaphragm area.

警告：不要让紫色底漆或液状粘固剂侵入阀门挡圈和隔膜区域。

youdao

Caution: Do not allow purple primer or solvent cement to migrate into the valve weir and diaphragm area.

警告：要小心谨慎操作，避免紫色底漆或液状粘固剂流回到阀门内的隔膜或密封区域。

youdao